Bundle
Straighterline PHY250 General Physics I Graded Exams 1, 2, 3, 4 & Midterm (New Version June 2024)
5 Items
Straighterline PHY250 General Physics I Midterm Exam (New Version June 2024)
Question 1 Correct 5.00 points out of 5.00 A 0.200 kg dart is fired horizontally at a speed of 2.75 m / s when it hits a 0.700 kg block ofwood sus... [Show More] pended by a string. The nose of the dart sticks into 0.00210 m the wood. Together the dart and block swing upwards from a height of 0.0500 m above a table to 0.128 m above the table. Which of the following is the average force the dart applies to the block during impact? Select one: a. 32.4 N b. 15.1 N c. 1.36 N d. 0.872 N Straighterline PHY250 General Physics I Midterm Exam (New Version June 2024) We are a team of experts offering class attendance for all Straighterline, Online ATI, HESI, NCLEX, Portage Learning, Sophia etc courses (including final proctored exams!!). We also write essays, discussion posts, research papers and school assignments. Should you need any of these services, Contact us via email: [email protected] or WhatsApp: +1 (540) 753-5914. Guaranteed Passing! PHY250_TW | Chapter 7: Force of Gravity Started on State Finished Completed on Time taken 1 hour 21 mins Grade 195.00 out of 200.00 (98%)Question 3 Correct 5.00 points out of 5.00 Which is the standard unit of time in the metric system? Select one: a. minute b. second c. year d. hour Question 4 Correct 5.00 points out of 5.00 An automobile of mass 900 kg is moving at a speed of 12.5 m/s when it encounters a hill. At the bottom of the hill the car speed increases to 14.6 m/s. If the elevation of the hill is 15.3 m, how much work did the brakes do while going down the hill? Select one: a. -1.09x105 J b. -9.59x104 J c. 2.05x105 J d. 1.33x105 J A bicyclist is heading east along a straight bike path. As the path crosses into a state park, it turns from dirt to pavement and the biker accelerates at a constant rate of 1.2 m / s2. At time t = 0 the bicyclist is 2.0 m east of the state park line and is going at a speed of 3.0 m / s. Where is the cyclist when his velocity is 10.0 m / s? Select one: a. 38 m from the state line b. 40 m from the state line c. 5.8 m from the state line d. 8.3 m from the state line Question 2 Correct 5.00 points out of 5.00The moment of inertia of a thin rectangular sheet of uniform mass density about an axis running through its center, as shown, is ICM = 1 M(A2 + B2), where M is the total 12 mass of the sheet and A and B are its length and width. What is the moment of inertia of the sheet about one of its corners? (The axis of rotation is still perpendicular to the sheet.) Select one: a. 7 M(A2 + B2) 12 b. 13 M(A2 + B2) 12 c. 1 M(A2 + B2) 3 d. 1 M(A2 + B2) + 1 M√A2 + B2 12 2 Question 5 Correct 5.00 points out of 5.00Question 7 Correct 5.00 points out of 5.00 An airplane travels 600 m down a runway for take off. It starts from rest and moves with constant acceleration. It is in the air in 23 s. What is its speed when it takes off? Select one: a. 7.2 m / s b. 2.3 m / s c. 52 m / s d. There is not enough information provided to answer the question. A 3000 kg satellite is in a circular orbit around the Earth. The radius of the orbit is r0. Using the energy diagram, what is the value of r0? The mass of the Earth is 6 × 1024 kg. Select one: a. 7.8 × 103 m b. 6.0 × 103 m c. 7.8 × 107 m d. 6.0 × 107 m Question 6 Correct 5.00 points out of 5.00Question 9 Correct 5.00 points out of 5.00 Which of the following is an example of uniform circular motion? Select one: a. the planet Pluto in its wandering about the Sun b. the swing of a pendulum between the turning points c. a bug sitting still on a playing 45 rpm record d. the weights on the rim of a car tire as the car slowly accelerates Kylie throws Kyra a kiwi. The kiwi leaves Kylie’s hand at a height of 1.3 m from the ground and Kyra grabs it out of the air at a height of 1.6 m. Kylie throws the kiwi at an angle of 33° relative to the horizontal. The kiwi is in the air for 1.1 s. How far apart are Kylie and Kyra standing? (Assume there is no drag force that no wind is blowing.) Select one: a. 9.4 m b. 9.6 m c. 5.4 m d. 7.1 m Question 8 Correct 5.00 points out of 5.00Question 11 Correct 5.00 points out of 5.00 A 1,450 kg car moves with a speed of 25.0 m / s when it collides with a stationary car having a mass of 1,550 kg. The two vehicles lock bumpers on impact. The two cars thencollide with a stationary third car of mass 1,250 kg. During this second impact, the third vehicle becomes attached to the second but the first car is breaks free and moves at 0.125 m / s in the opposite direction. Which of the following is the final velocity of thesecond and third cars after the final collision? Select one: a. 12.88 m / s b. 12.14 m / s c. 14.42 m / s d. 13.01 m / s Which of the following is the resultant gravitational force acting on the 100 kg mass in the diagram? Select one: a. 7.4 × 10−7 N b. 8.2 × 10−7 N c. 1.56 × 10−6 N d. 15.6 × 10−6 N Question 10 Correct 5.00 points out of 5.00Question 13 Correct 5.00 points out of 5.00 Sally in St. Louis, MO gets a call on her cellular phone from Cindy in Cincinnati, OH, who invites her to go to a Reds baseball game. The cellular signal travels through a satellite that is in geosynchronous orbit exactly half way between St. Louis and Cincinnati at a height of 36,000 km above the Earth’s surface. The next day, Sally gets in her car and drives to Cincinnati where she watches the game. There are approximately 600 km between St. Louis and Cincinnati. What is the difference between Sally’s displacement and the displacement of the cellular signal? (Assume that St. Louis and Cincinnati are at the same height above sea level.) Select one: a. There is no difference in the displacement of the cellular signal and Sally’s displacement. b. The displacement of the cellular signal is the opposite of Sally’s displacement. c. The displacement of the cellular signal is approximately 200 km more than the displacement of Sally. d. Sally’s displacement is about 40 km more than the displacement of the cellular signal. How can you calculate the magnitude of a vector using scalar products? Select one: a. Multiply it by a unit vector. b. Multiply it by itself and take the square root. c. Multiply it by a known vector. d. Multiply it by a scalar number. Question 12 Correct 5.00 points out of 5.00Question 15 Correct 5.00 points out of 5.00 The distance along both the axes, as shown in the drawing below, are in meters. Which of the following is the resultant gravitational force vector acting on the 100 kg mass at the origin of the diagram? Select one: a. 1.3 × 10−3 N at + 85∘ b. 1.3 × 10−3 N at − 85∘ c. 1.1 × 10−4 N at + 85∘ d. 1.1 × 10−4 N at − 85∘ Which of the following is the sign of the scalar product of two vectors that have an angle of 79° between them? Select one: a. It cannot be determined without more information b. zero c. positive d. negative Question 14 Correct 5.00 points out of 5.00Question 17 Correct 5.00 points out of 5.00 The work done to accelerate a car from 0 m / s to 40 m / s is times greater than the work done to accelerate it from 0 m / s to 20 m / s? Select one: a. two b. three c. four d. eight Which of the following is involved in uniform circular motion? Select one: a. constant tangential velocity b. constant angular velocity c. zero acceleration d. net tangential acceleration Question 16 Correct 5.00 points out of 5.00Question 19 Correct 5.00 points out of 5.00 Using Kepler’s third law of planetary motion, how many times larger is the average radius of Neptune’s orbit if it takes 164 Earth-years to orbit the Sun? Approximate each orbit as being circular. Select one: a. 164 times larger b. 82 times larger c. 30 times larger d. 5.5 times larger A force is applied to an object as shown. What is the direction of the torque vector? Select one: a. the same as the direction of the force vector b. the same as the direction of the position vector c. out of the screen d. into the screen Question 18 Correct 5.00 points out of 5.00Question 21 Correct 5.00 points out of 5.00 Which of the following is the gravitational force between the Earth and the Moon? The Earth's mass is 6 × 1024kg the Moon's mass is 7.4 × 1022 kg and the distance between their centers of mass is 3.8 × 108 m. Select one: a. 2.6 × 1021 N b. 2.1 × 1020 N c. 7.5 × 1024 N d. 7.8 × 1028 N An empty freight train car of mass 10,000 kg is rolling along a level section of track at 2.00 m / s. It collides with a loaded car of weight 1.96 × 105 N, which is at rest. The cars couple upon collision. Which of the following is the speed of the train after the collision? Select one: a. 1.02 m / s b. 0.667 m / s c. 2.00 m / s d. 3.02 m / s Question 20 Correct 5.00 points out of 5.00Question 23 Correct 5.00 points out of 5.00 → Why is A ⋅ B = AxBx + AyBy → Select one: a. It isn’t. b. All the cross-terms are equal to zero. c. The vectors are 90° apart. d. The vectors are pointing in the same direction. These two systems each consist of two masses connected by ideal massless rods to a fixed pivot point. The masses in the two systems are all identical, but the rods in the second system are twice as long as the rods in the first. Suppose that both systems are let go from rest. The instant after they are let go, the upper masses of each system have an instantaneous acceleration vector, as shown. How do the magnitudes of these vectors compare? Select one: a. 2a1 = a2 b. a1 = a2 c. a1 = 2a2 d. a1 = 4a2 Question 22 Correct 5.00 points out of 5.00Question 25 Correct 5.00 points out of 5.00 A 309 g glass rolls down an incline and onto a horizontal platform where it hits a beverage can that is laying at rest on its side. The top of the incline is 11.0 cm above the horizontal platform. The beverage can is initially at rest and weighs 7.35 N. Which of following is the final velocity of the glass? Select one: a. 0.612 m / s b. −5.83 m / s c. −1.35 m / s d. −0.612 m / s Question 26 Correct 5.00 points out of 5.00 At which of the following speeds would you have to throw a ball if you wanted it to reach a maximum height of 10 m above the point you released the ball? Assume you throw it at a 70° angle with respect to the horizontal. Select one: a. 5 m / s b. 14.8 m / s c. 50 m / s d. 208 m / s From the following choices select the one that is not required for making quantitative statements about the world. Select one: a. a regional unit system b. units c. standards of measurement d. measurements Question 24 Correct 5.00 points out of 5.00Question 28 Correct 5.00 points out of 5.00 Which of the following statements concerning friction is incorrect? Select one: a. The force that prevents two surfaces from sliding across one another is called static friction. b. The force of static friction ( fs ) between parallel surfaces in contact is given by: fs = μsN. c. Sliding or kinetic friction is the force which acts to stop two surfaces from sliding past one another. d. The force of kinetic friction acts opposite to the direction of motion and is expressed by the following equation: fk = μkN. A person with mass m is on a ride in an amusement park. She is accelerated by a vertical wall with an acceleration of →a and her feet are not touching the floor. Ignoring air resistance, the normal force must be equal to . (Acceleration due to gravity is →g and t is the angle between the normal force and m→g .) Select one: a. m →g b. m→a c. m → g sin t d. m→g cos t Question 27 Correct 5.00 points out of 5.00Question 30 Correct 5.00 points out of 5.00 A mass m is dropped from rest to the ground from a height h. Which of the following is correct? Select one: a. When it strikes the ground, the speed of the mass is inversely proportional to h. b. The kinetic energy of the mass when it strikes the ground is inversely proportional to h. c. The kinetic energy of the mass when it strikes the ground is independent of m. d. When it strikes the ground the speed of the mass is independent of m. Question 31 Correct 5.00 points out of 5.00 A steel playground slide is 4.58 m long and is raised up 2.35 m on one end. Which of the following is the final speed of a child of mass of 22.8 kg as she slides down from the top starting at rest? Assume that there is minimal friction between the child and the slide. Select one: a. 9.47 m/s b. 6.79 m/s c. 4.86 m/s d. 6.61 m/s A car of mass m drives along a road. The road exerts a frictional force on each of the tires equivalent to f. The frictional force of air resitance R exerts a backwards force on the car. Assuming these are the only two forces in the horizontal direction, under which of the following relationships would the car move at a constant speed? Select one: a. 4 f = R b. ma − R = f 4 c. f = N − g cos θ d. = mg f 2 e. None of the above Question 29 Correct 5.00 points out of 5.00Question 33 Incorrect 0.00 points out of 5.00 If A + B = C , which of the following is not true? → → → Select one: → a. |A | + |B | = |C | → → → b. |A + B | = |C | c. A2 + B2 = C2 → → d. Ax + Bx = Cx Question 34 Correct 5.00 points out of 5.00 True or false? Clockwise rotations are always positive. Select one: a. false b. true A spaceship is in space and currently at rest. The directive is given to accelerate from rest to a speed of 2.90 × 103 m / s. If the fuel budgeted for this action is 400 kg, which of the following is velocity of the exhaust gas required if the ship mass is 7.38 ×103 kg? Select one: a. 955 [m / s] b. −955 [m / s] c. –5.5 × 104 [m / s] d. −1.01 × 103 [m / s] Question 32 Correct 5.00 points out of 5.00Question 36 Correct 5.00 points out of 5.00 Which of the following is correct concerning the centripetal acceleration of an object in uniform circular motion? Select one: a. The centripetal acceleration is directed radially outward. b. The centripetal acceleration is in the tangential direction. c. The centripetal acceleration is directed radially inward. d. The centripetal acceleration is constant throughout the path of the uniform circular motion. Question 37 Correct 5.00 points out of 5.00 Assume that when the brakes are applied a constant frictional force is exerted on the wheels of a car. Which of the following is correct? Select one: a. The car loses kinetic energy at a constant rate. b. The distance the car travels before coming to rest is proportional to the speed of the car just before the brakes are applied. c. The distance the car travels before coming to rest is proportional to the square of the speed of the car just before the brakes are applied. d. The kinetic energy of the car is inversely proportional to the time, with t = 0 being the instant the brakes are applied. In which of the following high speed collisions does the car experience a smaller force than the other object participating in the collision? Select one: a. a car and a tractor trailer b. a car and a bridge support c. a car and the planet mars d. none of the other choices Question 35 Correct 5.00 points out of 5.00Question 39 Correct 5.00 points out of 5.00 A truck that weighs 1000 N moves at 5.89 m / s when it hits another vehicle in an elastic collision. The second vehicle, weighing 981 N, was stationary but free to move. Find the final velocity of the second vehicle after the collision. Select one: a. v2 f = 29.2 m / s b. v2 f = 5.95 m / s c. v2 f = 0.0583 m / s d. v2 f = 58.3 m / s The motor of a toy train quits when the train reaches the top of the far left hill in the diagram. When the train of mass of 7.62 kg gets to the top of this hill, it is moving at a speed of 0.100 m/s. When the train finally makes it up the last hill, it uses all of its available mechanical energy to compress the spring. Which of the following is the distance the spring compresses if the spring constant is 1.00 × 105 N/m. Select one: a. 0.0271 m b. 0.000 m c. 0.0119 m d. 0.0192 m Question 38 Correct 5.00 points out of 5.00A particle free to move in one dimension is in stable equilibrium at x = a. Which of the following might be a graph of the net force on the particle as a function of position? Select one: a. b. c. Question 40 Correct 5.00 points out of 5.00Quiz navigation 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 Show one page at a time Finish review © 2023 StraighterLine. All rights reserved d. [Show Less]
- Exam
- $10.45
- 0
- 17
Straighterline PHY250 General Physics I Graded Exam 4 (New Version June 2024)
Question 1 Correct 6.00 points out of 6.00 What is the internal energy of 7.91 x 1022 gas molecules at a temperature of 300 K? Select one: a. 164 J ... [Show More] b. 109 J c. 44.2 J d. 492 J Question 2 Correct 6.00 points out of 6.00 Because the energy in SHM alternates between kinetic and potential, at some position x, the kinetic energy must be equal to the potential energy. For the general case, an object undergoing SHM with an amplitude A, which of the following is this position? Select one: a. A 2 b. A A c. √2 d. √2A Straighterline PHY250 General Physics I Graded Exam 4 (New Version June 2024) We are a team of experts offering class attendance for all Straighterline, Online ATI, HESI, NCLEX, Portage Learning, Sophia etc courses (including final proctored exams!!). We also write essays, discussion posts, research papers and school assignments. Should you need any of these services, Contact us via email: [email protected] or WhatsApp: +1 (540) 753-5914. Guaranteed Passing! PHY250_TW | Chapter 13: Kinetic Theory and Thermodynamics Started on State Finished Completed on Time taken 45 mins 11 secs Grade 144.00 out of 150.00 (96%)Question 4 Correct 6.00 points out of 6.00 Suppose that 10 moles of an ideal gas have a gauge pressure of 2 atm and a temperature of 200 K. If the volume of the gas is doubled and the pressure dropped to a gauge pressure of 1 atm, what is the new temperature? Select one: a. 267 K b. 300 K c. 400 K d. 200 K The filament of a light bulb has a temperature of 2580oC and radiates 60 W of power at a room temperature of 20oC. The emissivity of the filament is 0.36. What is the surface area of the filament? Select one: a. 0.44 cm2 b. 0.62 cm2 c. 0.74 cm2 d. 0.91 cm2 e. 0.144 cm2 Question 3 Correct 6.00 points out of 6.00Question 6 Correct 6.00 points out of 6.00 An ideal gas is maintained at a constant pressure of 70,000 Pa during an isobaric process and its volume decreases by 0.2 m3. What work is done by the system on its environment? Select one: a. 14,000 J b. 350,000 J c. -14,000 J d. -35,000 J Two waves are traveling side by side on two parallel ropes. Both waves are described by the function y (x, t) = 1.52 cos(0.38x + 1.41t). If the mass densities of the two ropes are 0.036 kg /m and 0.120 kg /m, what is the difference in their tensions? Select one: a. 0.0061 N b. 0.31 N c. 0.34 N d. 1.2 N Question 5 Correct 6.00 points out of 6.00Two speakers emit sinusoidal sound waves with equal amplitudes and slightly different frequencies, resulting in beats. This graph illustrates the resulting sound’s slowly-varying envelope of oscillation. Suppose the volume on one of the speakers is turned down slightly. Which of the following graphs illustrates the new envelope? The scale in all of the graphs is the same. Select one: a. b. Question 7 Correct 6.00 points out of 6.00Question 8 Correct 6.00 points out of 6.00 Which of the following best describes the relationship between two systems in thermal equilibrium? Select one: a. Both have the same amount of heat. b. The volumes are equal. c. The masses are equal. d. Both systems have zero velocity. e. None of these c. d.Question 10 Correct 6.00 points out of 6.00 If the pressure of gas is doubled and its absolute temperature is quadrupled, the volume is what factor times the original? Select one: a. 2 b. 1/2 c. 1/4 d. 4 Question 11 Correct 6.00 points out of 6.00 When rod 1 is heated by an amount ΔT, its length increases by ΔL. If rod 2, which is twice as long as rod 1, is heated by the same amount, its length increases by how much? Select one: a. ΔL b. 2ΔL c. ΔL/2 A 0.400 kg iron horseshoe that is initially at 500oC is dropped into a bucket containing 20 kg of water at 22oC. What is the final equilibrium temperature? Neglect any heat transfer to or from the surroundings. The specific heat of iron is 452 J/(kg Co). Select one: a. 23.0oC b. 24.5oC c. 21.5oC d. 26.0oC Question 9 Correct 6.00 points out of 6.00Question 13 Correct 6.00 points out of 6.00 If A is the amplitude of a mass on an oscillating spring, then in one period the mass travels a distance of . Select one: a. 0 b. A c. 2A d. 4A Question 14 Correct 6.00 points out of 6.00 What is the outside temperature if 16 x 106 J of heat is lost through a 2.00 m2 pane of 0.250 cm thick glass (kglass = 0.840 W/(m K) ) in 45 min from a house kept at 21.8oC? Select one: a. 0oC b. 4oC c. 13oC d. 24oC e. 28oC What happens to a given mass of water when it is cooled from 8oC to 4oC? Select one: a. It contracts. b. It expands. c. It vaporizes. d. It does not expand, vaporize, or contract. Question 12 Correct 6.00 points out of 6.00Question 16 Correct 6.00 points out of 6.00 Suppose a damping force Fd = −bv, where v is the velocity, is applied to an oscillatory system. Which of the following is the unit of the coefficient b? Select one: a. N (newton) b. kg /s c. m /s d. kg /m Question 17 Correct 6.00 points out of 6.00 Two sinusoidal waves of amplitude 5.71 m and frequency 2.5 Hz are traveling in the same direction on the same rope. If they are 17∘out of phase, what is the amplitude of the resting wave? Select one: a. 11 m b. 5.5 m c. 6.9 m d. 9.2 m A heat engine operates in a Carnot cycle between 80oC and 350oC. It receives 21,000 J of energy per cycle from the hot reservoir. The duration of each cycle is 1.00 s. What is the mechanical power of this engine? Select one: a. 21 kW b. 910 kW c. 9.10 kW d. 120 kW Question 15 Correct 6.00 points out of 6.00Question 19 Correct 6.00 points out of 6.00 The pressure in a tank of nitrogen is 1.75 x 107 Pa at 20oC. If the nitrogen occupies 30 m3 at 1 atm and 20oC, find the volume of the tank. Select one: a. 0.174 m3 b. 0.287 m3 c. 0.304 m3 d. 0.356 m3 Question 20 Correct 6.00 points out of 6.00 What is the efficiency of a Carnot engine operating between 100oC and 0oC? Select one: a. 7% b. 15% c. 27% d. 51% The Ideal Gas law is given by which equation? (n is the number of moles of the gas) Select one: a. P = nRT b. PV = nRT c. PT = nRV d. PV=RT Question 18 Incorrect 0.00 points out of 6.00Question 22 Correct 6.00 points out of 6.00 An oscillating mass is connected to a horizontal spring with a spring constant k. The force that the spring exerts on the mass is described by . Select one: a. −kx b. +kx c. 1 kx2 2 d. kx + mg Question 23 Correct 6.00 points out of 6.00 The natural direction of the net heat flow between two reservoirs depends on . Select one: a. their temperatures b. their internal energy contents c. their pressures d. whether they are in the solid, liquid, or gaseous state The exhaust temperature of a Carnot heat engine is 573 K. What is the intake temperature if the efficiency of the engine is 30%? Select one: a. 756 K b. 819 K c. 711 K d. 923 K Question 21 Correct 6.00 points out of 6.00Question 25 Correct 6.00 points out of 6.00 A large circular loop of a rope of radius R and linear mass density μ is rotating in deep space at a constant angular velocity. The linear speed of any piece of the rope is v. If a wave is created on this rope, what speed does it travel at, relative to the rope? Select one: a. v b.√v2 R c.√ √ v2 Rμ d. v2 2R Quiz navigation 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Show one page at a time Finish review Of the following substances, the one that requires the greatest amount of heat per kilogram for a given increase in temperature is . Select one: a. ice b. water c. steam d. copper Question 24 Correct 6.00 points out of 6.00© 2023 StraighterLine. All rights reserved [Show Less]
- Exam
- $10.45
- 0
- 19
Straighterline PHY250 General Physics I Graded Exam 3 (New Version June 2024)
Question 1 Correct 6.00 points out of 6.00 The main pipe coming into a factory is 8 m in diameter, and the water in that pipe enters the building at 1... [Show More] m / s. Once inside, however, the pipe divides into four pipes that are each4 m in diameter. Which of the following is the velocity of the water in the smaller pipes? Select one: a. 2 m / s b. 4 m / s c. 0.25 m / s d. The velocity in the smaller pipes is the same as the velocity in the larger pipe. Question 2 Correct 6.00 points out of 6.00 Recently it was discovered that a planet with mass 1.3 × 1028 kg orbits the star 70 Virginis, which is 59 light years from the Earth. 70 Virginis has approximately the same mass as the Sun, at 1.9 × 1030 kg. If the planet is in a nearly circular orbit of radius 7.1 × 1010 m what is the period of the planet in terms of Earth-days? Select one: a. 58 days b. 122 days c. 1200 days d. 1480 days Straighterline PHY250 General Physics I Graded Exam 3 (New Version June 2024) We are a team of experts offering class attendance for all Straighterline, Online ATI, HESI, NCLEX, Portage Learning, Sophia etc courses (including final proctored exams!!). We also write essays, discussion posts, research papers and school assignments. Should you need any of these services, Contact us via email: [email protected] or WhatsApp: +1 (540) 753-5914. Guaranteed Passing! PHY250_TW | Chapter 9: Relativity Started on State Finished Completed on Time taken 51 mins 45 secs Grade 144.00 out of 150.00 (96%)Question 4 Correct 6.00 points out of 6.00 The reference frames A and A′ describe events with unprimed coordinates (x, y) and primed coordinates (x′, y′ ), respectively. Relative to A, A′ moves at a constant speed v in the direction of negative y. If the origins of the two frames coincide at the instant t = 0, which of the following equations correctly relates the coordinates y and y′ ? Select one: a. y′ = y b. y′ = y − vt c. y′ = y + vt d. y′ = yvt Tricia’s giant jack-in-the-box, Jerry, has now come to life, and wants revenge on her. While Tricia is away, Jerry devises a hydraulic press under Tricia’s bed. The press allows Jerry to apply 20 times the force on Tricia’s bed that he applies to the piston on his side. What is the ratio of the area of the piston on Jerry’s side to the area of the piston under the bed? Select one: a. 1 20 b. 20 c. 20ρgh d. 1 20ρgh Question 3 Correct 6.00 points out of 6.00Question 6 Correct 6.00 points out of 6.00 Two inertial observers are moving with relative speed v. An observer, O, measures the speed of an object in her reference frame to be u and notes O’s speed to be v. What is the speed of the object in the prime inertial frame according to O ? Select one: a. u ′ = b. u′ = c. u ′ = d. u′ = u−v 1+uv/c2 u−v 1−uv/c2 u+v 1−uv/c2 u+v 1+uv/c2 The radius of the Moon is known to be 1.7 × 106 m. Astronauts who walked on the Moon measured the time it takes an object to fall 1 m on the Moon to be about 1.1 s. Using this information, which of the following is the mass of the Moon? Select one: a. 7.1 × 1022 kg b. 3.5 × 1022 kg c. 8.5 × 1021 kg d. Not enough information is provided to solve the problem. Question 5 Correct 6.00 points out of 6.00Question 8 Incorrect 0.00 points out of 6.00 In your frame, a person is moving in the positive x-direction at a speed of 40,000 km / s. Suppose that a streetlamp located at x = 4 km turns on just as the person passes it by. The proper time interval between when the person is located at x = 0 km and when the streetlamp turns on is . Select one: a. 0.0001 s b. 0.0004 s c. 4 km d. none of the above O observes O ′ move to the right with velocity v. O ′ measures the coordinates, (x ′, t ′ ), of an event. What are the Lorentz transformations that will enable the observer in O ′ to calculate the coordinates of the same event in the O reference frame? Select one: a. x = (x′ + vt′) and t = γ(t ′ + ′ vx c2 ) b. x = γ(x ′ − vt′) and t = γ(t ′ − ′ ) vx c2 c. x = γ(x′ + vt′) and t = γ(t ′ + ′ ) vx c2 d. x = γ(x′ + vt′) and t = γ(t′ − vx′) c2 Question 7 Correct 6.00 points out of 6.00Question 10 Correct 6.00 points out of 6.00 The distance along both the axes, as shown in the drawing below, are in meters. Which of the following is the resultant gravitational force vector acting on the 100 kg mass at the origin of the diagram? Select one: a. 1.3 × 10−3 N at + 85∘ b. 1.3 × 10−3 N at − 85∘ c. 1.1 × 10−4 N at + 85∘ d. 1.1 × 10−4 N at − 85∘ The derivation of Bernoulli’s equation relies on . Select one: a. conservation of momentum b. conservation of energy c. conservation of angular momentum d. incompressibility Question 9 Correct 6.00 points out of 6.00Question 12 Correct 6.00 points out of 6.00 Why are water towers used? Select one: a. to provide cities with a clean water supply in case of a flood b. to provide cities with a water resevoir in case of a drought c. to provide a ρgh pressure difference enabling running water d. to lower the density of water, so people don’t have to drink “heavy” water Question 13 Correct 6.00 points out of 6.00 In your frame, a certain galaxy is moving at a high speed in the x-direction. Relative to the galaxy, a certain comet in the galaxy is also moving at a high speed in the x-direction. Let a be the galaxy’s speed with respect to you, b be the comet’s speed with respect to the galaxy, and c be the comet’s speed with respect to you. Then Select one: a. a + b > c b. a + b < c c. a + b = c d. a 2 + b 2 = c 2 A very fast train is moving at close to the speed of light. Suppose that its length in the frame of the ground is one-half of its length when at rest. What is the speed of the train? Select one: a. 0.87 c b. 0.50 c c. 2.0 c d. 0.75 c Question 11 Correct 6.00 points out of 6.00Question 15 Correct 6.00 points out of 6.00 A small airplane and a hot air balloon are moving horizontally towards each other. Relative to the ground, the plane travels at a speed of 135 m / s and the balloon travels at a speed of 7 m / s. Suppose that someone throws a tomato out of the basket of the hot air balloon, as shown. At a particular instant, the tomato is traveling horizontally with a speed of 28 m / s relative to the balloon. According to Galilean (or classical) relativity, what is the velocity of the tomato relative to the airplane? Select one: a. 156 m / s b. 114 m / s c. 100 m / s d. 170 m / s Which one of the following statements concerning the derivation or usage of Bernoulli’s equation is false? Select one: a. The fluid must be nonviscous. b. Streamline flow is assumed. c. The fluid must be incompressible. d. Vertical distances are always measured relative to the lowest point within the fluid. Question 14 Correct 6.00 points out of 6.00Question 17 Correct 6.00 points out of 6.00 A lift force is exerted on an airplane wing as a result of . Select one: a. Bernoulli’s principle b. Archimedes’ principle c. Poiseuille’s principle d. Pascal’s principle Question 18 Correct 6.00 points out of 6.00 When an asteriod that is headed directly for Earth is a distance of 8 Earth radii from Earth’s center, it has a speed of 15 km / s. What is the speed of the asteroid when it collides with the Earth? Ignore any frictional effects of the atmosphere. The mass of the Earth is 5.98 × 1024 kg and the Earth’s radius is 6.37 × 106 m. Select one: a. 110,000 km / s b. 10.5 km / s c. 330,000 km / s d. 18.3 km / s Suppose two inertial observers are each moving with the speed of light in the opposite directions. What is their relative speed? Select one: a. c b. 2c c. 0 d. The relative speed cannot be determined from the given information. Question 16 Correct 6.00 points out of 6.00Question 20 Correct 6.00 points out of 6.00 When viewed from above, a particular car has an area A1. Each of its four tires holds a pressure, PT , and contacts the ground with an area of A2. If atmospheric pressure is Patm, which of the following is the correct expression for the weight of the car? Select one: a. PT A2 − ρgh b. PT A2 − PatmA1 c. ρA1gh d. 4PT A2 An object is observed from two different inertial frames, S and S′. According to classical relativity, which one of the following quantities must have the same value in each frame? Select one: a. velocity b. acceleration c. momentum d. kinetic energy Question 19 Correct 6.00 points out of 6.00Question 22 Correct 6.00 points out of 6.00 Which of the following is the gravitational force between the Earth and the Moon? The Earth's mass is 6 × 1024kg the Moon's mass is 7.4 × 1022 kg and the distance between their centers of mass is 3.8 × 108 m. Select one: a. 2.6 × 1021 N b. 2.1 × 1020 N c. 7.5 × 1024 N d. 7.8 × 1028 N A 3000 kg satellite is in a circular orbit around the Earth. The radius of the orbit is r0. Using the energy diagram, what is the value of r0? The mass of the Earth is 6 × 1024 kg. Select one: a. 7.8 × 103 m b. 6.0 × 103 m c. 7.8 × 107 m d. 6.0 × 107 m Question 21 Correct 6.00 points out of 6.00Question 24 Correct 6.00 points out of 6.00 Which of the following is the resultant gravitational force acting on the 100 kg mass in the diagram? Select one: a. 7.4 × 10−7 N b. 8.2 × 10−7 N c. 1.56 × 10−6 N d. 15.6 × 10−6 N Question 25 Correct 6.00 points out of 6.00 Evaluate the following statement as true or false. Kepler’s first law of planetary motion states that the Sun is at the center of a planet’s elliptical orbit. Select one: a. false b. true A tire is filled at a gas station to the recommended pressure of 35 psi. Which of the following statements is most probable? Select one: a. The pressure inside the tire balances atmospheric pressure. b. The weight of the car is 140 N. c. The gauge pressure of the tire is zero. d. The pressure of the tire is 2.4 × 105 Pa. Question 23 Correct 6.00 points out of 6.00© 2023 StraighterLine. All rights reserved Quiz navigation 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Show one page at a time Finish review [Show Less]
- Exam
- $10.45
- 0
- 19
Straighterline PHY250 General Physics I Graded Exam 2 (New Version June 2024)
Question 1 Correct 6.00 points out of 6.00 A 0.500 kg steel ball is dropped from a height of 4.00 m onto a horizontal steel slab. The collision appear... [Show More] s elastic in that the ball rebounds to its original height. If the collision lasts for 2.00 × 10−3 s, which of the following is the impulse imparted to the ball and the average force applied to the ball during the collision? Select one: a. I = 8.49 kg•m / s F = 4.25 × 103 N b. I = 8.85 kg•m / s F = 4.43 × 103 N c. I = 8.00 kg•m / s F = 4.00 × 103 N d. I = 8.86 kg•m / s F = 2.22 × 103 N Straighterline PHY250 General Physics I Graded Exam 2 (New Version June 2024) We are a team of experts offering class attendance for all Straighterline, Online ATI, HESI, NCLEX, Portage Learning, Sophia etc courses (including final proctored exams!!). We also write essays, discussion posts, research papers and school assignments. Should you need any of these services, Contact us via email: [email protected] or WhatsApp: +1 (540) 753-5914. Guaranteed Passing! PHY250_TW | Chapter 6: The Physics of Extended Objects Started on State Finished Completed on Time taken 55 mins 22 secs GradeQuestion 3 Correct 6.00 points out of 6.00 Where is the center of mass for the rectangle in the figure? Select one: a. In the center of the rectangle b. Directly between 1 and 4 c. Close to 3 d. Near the bottom between 3 and 4 An empty freight train car of mass 10,000 kg is rolling along a level section of track at 2.00 m / s. It collides with a loaded car of weight 1.96 × 105 N, which is at rest. The cars couple upon collision. Which of the following is the speed of the train after the collision? Select one: a. 1.02 m / s b. 0.667 m / s c. 2.00 m / s d. 3.02 m / s Question 2 Correct 6.00 points out of 6.00Question 5 Correct 6.00 points out of 6.00 True or false? Gyroscopes do not need external forces to precess. Select one: a. false b. true Question 6 Correct 6.00 points out of 6.00 Why does an ice skater’s angular velocity increase when she pulls in her arms during a spin? Select one: a. She applies a torque. b. She increases her moment of inertia. c. She reduces her moment of inertia. d. She moves her center of mass. Which of the following is the general definition of impulse ? Select one: → a. ΣF = → d p dt b. →I = ∫t2 ΣF→dt t → c. F 1 → = ddt I d. →I = d (m→v ) dt Question 4 Correct 6.00 points out of 6.00Question 8 Correct 6.00 points out of 6.00 The work done by a variable force F of the form F = kx where x varies from x0 to x1 where x0 = 0 is given by which of the following? Select one: a. kx12 b. kx1 c. (1/2) kx12 d. 0.5kx03 Question 9 Correct 6.00 points out of 6.00 A spaceship is in space and currently at rest. The directive is given to accelerate from rest to a speed of 2.90 × 103 m / s. If the fuel budgeted for this action is 400 kg, which of the following is velocity of the exhaust gas required if the ship mass is 7.38 ×103 kg? Select one: a. 955 [m / s] b. −955 [m / s] c. –5.5 × 104 [m / s] d. −1.01 × 103 [m / s] Which of the following objects has the greatest kinetic energy? Select one: a. an object of mass 4m and speed v b. an object of mass 3m and speed 2v c. an object of mass 2m and speed 3v d. an object of mass m and speed 4v Question 7 Correct 6.00 points out of 6.00Question 11 Correct 6.00 points out of 6.00 Which of the following is not a unit of work? Select one: a. N⋅m b. kg⋅m2/s2 c. J⋅m d. ft ⋅ lb Question 12 Correct 6.00 points out of 6.00 A pendulum bob has mass of 0.750 kg and is on a pendulum arm of length 1.00 m. The pendulum is pulled back so that the arm makes an angle of 60.0° from the vertical and is then released. Which of the following is the speed of the mass when it reaches its lowest point? Select one: a. 3.68 m/s b. 3.13 m/s c. 4.43 m/s d. 4.12 m/s A 1,450 kg car moves with a speed of 25.0 m / s when it collides with a stationary car having a mass of 1,550 kg. The two vehicles lock bumpers on impact. The two cars thencollide with a stationary third car of mass 1,250 kg. During this second impact, the third vehicle becomes attached to the second but the first car is breaks free and moves at 0.125 m / s in the opposite direction. Which of the following is the final velocity of thesecond and third cars after the final collision? Select one: a. 12.88 m / s b. 12.14 m / s c. 14.42 m / s d. 13.01 m / s Question 10 Correct 6.00 points out of 6.00Question 14 Correct 6.00 points out of 6.00 An ocean liner in the distance subtends an arc in your field of vision of 2°. If you estimate the length of the ocean liner to be 250 m, how far away is it? Select one: a. 130 m b. 500 m c. 7200 m d. 14,000 m Question 15 Correct 6.00 points out of 6.00 Which of the following is a form of Hooke’s law, where Fs is a spring force? Select one: a. Fs = −0.5x b. Fs = –kx c. Fs = −0.5x2 d. Fs = 0.5kx2 An automobile of mass 900 kg is moving at a speed of 12.5 m/s when it encounters a hill. At the bottom of the hill the car speed increases to 14.6 m/s. If the elevation of the hill is 15.3 m, how much work did the brakes do while going down the hill? Select one: a. -1.09x105 J b. -9.59x104 J c. 2.05x105 J d. 1.33x105 J Question 13 Correct 6.00 points out of 6.00A glasscutter has cut the shape below out of a sheet of glass for a unique window. Which of the following correctly shows the location of the center of mass of the window? You can assume that the glass has the same thickness throughout, so that the mass distribution throughout the window is uniform. Select one: a. b. c. d. Question 16 Correct 6.00 points out of 6.00Question 18 Incorrect 0.00 points out of 6.00 A 3800 W electric motor brings a merry-go-round with a moment of inertia 90, 900 kg ⋅ m2 from rest up to a full speed in 15 seconds. Neglecting friction, what is the merry-go-round's full speed? Select one: a. 0.63 rad / s b. 1.1 rad / s c. 1.3 rad / s d. 1.6 rad / s Assume that when the brakes are applied a constant frictional force is exerted on the wheels of a car. Which of the following is correct? Select one: a. The car loses kinetic energy at a constant rate. b. The distance the car travels before coming to rest is proportional to the speed of the car just before the brakes are applied. c. The distance the car travels before coming to rest is proportional to the square of the speed of the car just before the brakes are applied. d. The kinetic energy of the car is inversely proportional to the time, with t = 0 being the instant the brakes are applied. Question 17 Correct 6.00 points out of 6.00Question 20 Correct 6.00 points out of 6.00 At any given instant in the rotational motion of a windmill, one of its blades is closest to pointing straight up (at certain instants, there are two blades that are equally close). Call that blade the “superior” blade at that instant. Starting from rest with one of its five blades pointing straight up, a windmill is angularly accelerated at a constant rate of 4.38 rad / s2. At what angle is the superior blade from vertical exactly 35 seconds later? Select one: a. 6.1 rad b. 9.7 × 10−3 rad c. 1.1 rad d. 0.17 rad Question 21 Correct 6.00 points out of 6.00 Two fruit flies land on a spinning record. One fly lands 0.050 m from the center, while the other lands 0.12 m from the center. What is the ratio of the centripetal force experienced by the first fly to that experienced by the second fly? Assume the two flies have the same mass. Select one: a. 12:5 b. 5:12 c. 144:25 d. 25:144 A 309 g glass rolls down an incline and onto a horizontal platform where it hits a beverage can that is laying at rest on its side. The top of the incline is 11.0 cm above the horizontal platform. The beverage can is initially at rest and weighs 7.35 N. Which of following is the final velocity of the glass? Select one: a. 0.612 m / s b. −5.83 m / s c. −1.35 m / s d. −0.612 m / s Question 19 Correct 6.00 points out of 6.00Question 23 Incorrect 0.00 points out of 6.00 Suppose a wheel with a moment of inertia I = 2.5 kg ⋅ m2 , a radius of R = 40 cm, and a mass of 6 kg were spinning at 4 rad/s before being released. If it rolls without slipping, how fast will it roll? Select one: a. 1.92 m / s b. 1.36 m / s c. 1.85 m / s d. 2.17 m / s A truck weighing 1000 N moves at 5.89 m / s when it has an elastic collision with another vehicle. The second vehicle, weighing 981 N, was stationary but free to move. Which of the following is the final velocity of the first vehicle after the collision? Select one: a. v1 f = 0.0565 m / s b. v1 f = 0.00901 m / s c. v1f = 0.0583 m / s d. v1 f = 0.00168 m / s Question 22 Correct 6.00 points out of 6.00Question 25 Correct 6.00 points out of 6.00 A truck that weighs 1000 N moves at 5.89 m / s when it hits another vehicle in an elastic collision. The second vehicle, weighing 981 N, was stationary but free to move. Find the final velocity of the second vehicle after the collision. Select one: a. v2 f = 29.2 m / s b. v2 f = 5.95 m / s c. v2 f = 0.0583 m / s d. v2 f = 58.3 m / s Quiz navigation 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Show one page at a time Finish review A mass m is dropped from rest to the ground from a height h. Which of the following is correct? Select one: a. When it strikes the ground, the speed of the mass is inversely proportional to h. b. The kinetic energy of the mass when it strikes the ground is inversely proportional to h. c. The kinetic energy of the mass when it strikes the ground is independent of m. d. When it strikes the ground the speed of the mass is independent of m. Question 24 Correct 6.00 points out of 6.00© 2023 StraighterLine. All rights reserved [Show Less]
- Exam
- $10.45
- 0
- 20
Straighterline PHY250 General Physics I Graded Exam 1 (New Version June 2024)
Question 1 Correct 6.00 points out of 6.00 A ball rolls with a speed of 2 m /s along a horizontal table. If the ball rolls off the table and lands on ... [Show More] the floor 0.50 m from the edge of the table, what is the height of the table? Select one: a. 1.2 m b. 0.1 m c. 0.3 m d. 0.6 m Question 2 Correct 6.00 points out of 6.00 If a vector pointing toward the north is crossed with one pointing toward the east, the resulting vector is pointing . Select one: a. up b. down c. south d. None of the other choices; the vector is zero. Straighterline PHY250 General Physics I Graded Exam 1 (New Version June 2024) We are a team of experts offering class attendance for all Straighterline, Online ATI, HESI, NCLEX, Portage Learning, Sophia etc courses (including final proctored exams!!). We also write essays, discussion posts, research papers and school assignments. Should you need any of these services, Contact us via email: [email protected] or WhatsApp: +1 (540) 753-5914. Guaranteed Passing! PHY250_TW | Chapter 3: Dynamics Started on State Finished Completed on Time taken 57 mins 37 secs GradeQuestion 4 Correct 6.00 points out of 6.00 Consider a basket with 3.046 kg of fruit. When you weigh the whole package (fruit + basket), the reading on the scale is 4.2 kg. What is the most realistic weight of the basket alone? Select one: a. 1.2 kg b. 1.154 kg c. 1.15 kg d. 1 kg Question 5 Incorrect 0.00 points out of 6.00 Consider a mass m that is attached to a rope such that the mass is in uniform circular motion. Which of the following is the magnitude of the centripetal force? Select one: a. mv2/r2 b. mv /r c. m2v2/r2 d. mv2/r Question 3 Correct 6.00 points out of 6.00 When going around a cloverleaf, a car suddenly comes upon a long stretch of essentially frictionless ice. At this instant the car . Select one: a. continues around the corner, uniformly completing its circular trajectory b. continues around the corner, but at with a larger arc c. continues on in a straight line path d. begins to tumbleQuestion 7 Correct 6.00 points out of 6.00 The position of an object along the x-axis is described by the formula x = 2t3 4t. Which of the following are the correct formulas for the velocity and acceleration of the object? Select one: a. v = 2t2 t, a = 2t 4 b. v = 6t2 4, a = 12t c. v = (1/2)t4 2t2, a = (5/2)t5 (2/3)t3 d. v = 6t 4, a = 6 Question 6 Correct 6.00 points out of 6.00 Consider a mass of 85 kg lying on the ground. The coefficient of static friction between them is μs = 0.65. What is the minimum force you need to apply in order to slide the mass? Select one: a. 55.2 N b. 1,282 N c. 541 N d. 1,082 NFor the given velocity-time graph, select the corresponding position-time graph. Select one: a. b. c. d. Question 8 Incorrect 0.00 points out of 6.00Which graph best illustrates the following description of motion? A car starts at rest, accelerates at a constant rate until it cruises at a constant speed, and then brakes at a constant rate until it is moving at a constant, very slow speed. Select one: a. b. c. Question 9 Correct 6.00 points out of 6.00Question 10 Correct 6.00 points out of 6.00 Which of the following statements concerning friction between the surfaces of two objects is correct? Select one: a. The force of friction mostly depends on the nature of the two surfaces. b. The force of friction depends soley on the speed that the two surfaces are moving relative to each other. c. The force of friction always varies as the square of the area of contact between the two surfaces. d. The force of friction is dependent on both the speed that the two surfaces are moving relative to each other and the area of contact. d.Which graph best illustrates the following description of motion? A car starts at rest, accelerates at a constant rate until it comes up behind a motorcycle that is moving more slowly, then slows down to follow the motorcycle, maintaining a constant distance behind it. Once the motorcycle has turned, the driver of the car accelerates to a much faster speed and then maintains that speed. Select one: a. b. c. Question 11 Correct 6.00 points out of 6.00Question 12 Correct 6.00 points out of 6.00 Consider a sphere with a radius of 4.0830 m. What is its volume? Select one: a. 285 m3 b. 285.1193 m3 c. 285.12 m3 d. 285.1190 m3 Question 13 Incorrect 0.00 points out of 6.00 If the formula for work is given by W = F ⋅ d , how much work is done by 60 N force which is applied as 25∘ with respect to the 13 m displacement? Select one: a. 0 N⋅m b. 330 N⋅m c. 707 N⋅m d. 780 N⋅m d.Imagine that you push down on an object that is sitting on a frictionless table. Which of the following diagrams includes all the forces acting on the object? −→W : object′s weight −→Fy : force you apply to the object →N : normal force applied by table to the object → O : normal force applied by the object to the table Select one: a. b. c. Question 14 Correct 6.00 points out of 6.00Question 15 Correct 6.00 points out of 6.00 Which of the following is not an example of a vector? Select one: a. displacement b. velocity c. acceleration d. mass Question 16 Correct 6.00 points out of 6.00 Robert measures an object to be 5 m away, while his much twin sister Roberta measures the same object to be 3 m away. Which of the following statements must be true? Select one: a. Robert and Roberta are exactly 4 m apart. b. Robert and Roberta are exactly 2 m apart. c. Robert and Roberta are exactly 8 m apart. d. The separation between Robert and his sister cannot be calculated with the information given. d.Question 18 Correct 6.00 points out of 6.00 How is a kilogram defined? Select one: a. by a silicon crystal containing a certain number of atoms b. by a platinum brick in Europe c. by the mass of 10 cubic centimeters of water d. from the mass required to create a 1 Newton force Question 19 Correct 6.00 points out of 6.00 A projectile is launched from a height of 250 m with initial horizontal velocity of 50 m/s. What is the horizontal range of the projectile? Select one: a. 312 m b. 235 m c. 410 m d. 357 m e. None of the above Question 17 Incorrect 0.00 points out of 6.00 Given the position vector r (t) = 4t i + 3tj, which of the following is the acceleration vector? 2 Select one: a. → a (t) = 8ti + 3j a c. a 4 3 3 3 2 2 aQuestion 21 Correct 6.00 points out of 6.00 Which of the following is a correct statement concerning the velocity of a particle in uniform circular motion? Select one: a. The velocity is in the same direction as the angular velocity. b. The velocity is directed radially inward. c. The velocity is in the same direction as the centripetal acceleration. d. The velocity is constantly changing directions. Question 22 Correct 6.00 points out of 6.00 A car of mass m drives along a road. The road exerts a frictional force on each of the tires equivalent to f. The frictional force of air resitance R exerts a backwards force on the car. Assuming these are the only two forces in the horizontal direction, under which of the following relationships would the car move at a constant speed? Select one: a. 4 f = R c. f = N g cos mg e. None of the above Question 20 Correct 6.00 points out of 6.00 Which is not an mks unit? Select one: a. meter b. kilogram c. second d. centimeterQuestion 24 Correct 6.00 points out of 6.00 Consider a rectangle with a base of 0.567 m and a height of 1.606 m. What is its area? Select one: a. 0.910 m2 b. 0.911 m2 c. 0.9106020 m2 d. 0.9106 m2 Question 25 Correct 6.00 points out of 6.00 In space, far away from any planets, which of the following spacecraft requires the greatest force to accelerate? Select one: a. Megaship, the large and powerful, with a mass of 10 million kg b. the 100 kg Interstellar Child Scooter c. the sleek and aerodynamic 10,000 kg Speedstar d. none of the other choices as things are weightless in space Quiz navigation 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 Show one page at a time Question 23 Correct 6.00 points out of 6.00 Which of the following is correct concerning the centripetal acceleration of an object in uniform circular motion? Select one: a. The centripetal acceleration is directed radially outward. b. The centripetal acceleration is in the tangential direction. c. The centripetal acceleration is directed radially inward. d. The centripetal acceleration is constant throughout the path of the uniform circular motion.© 2023 StraighterLine. All rights reserved Finish review [Show Less]
- Exam
- $10.45
- 0
- 20
Purchase the bundle to get the full access instantly
- 3 Million+ Study Documents
- 100% Money Back Guarantee
- Immediate Download Access
Add To Cart
Reviews 0
Bundle Details
$34.45
- Trusted by 800,000+ Students
- 24/7 Money Back Guarantee
- Download is directly available
19
0
Seller Details
Beginner
Reviews received
