Physics, 24.06.2021 16:30 jamarhroul
A motor with a power of 7.0 x 10^4 watts lifts a loaded elevator to a height of 20.0 meters for 40 seconds. What is the force exerted by the motor on the elevator?
Answers: 1
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An astronomer at the equator measures the doppler shift of sunlight at sunset. from this, she calculates that earth’s tangential velocity at the equator is 465 m/s. the centripetal acceleration at the equator is 3.41 10 2 m/s 2 . use this data to calculate earth’s radius.
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Physics, 21.06.2019 20:30
Aforce of 240.0 n causes an object to accelerate at 3.2 m/s2. what is the mass of the object?
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State the right hand rule of the direction of magnetic field in a conductor carrying current
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Avery hard rubber ball (m = 0.5 kg) is falling vertically at 4 m/s just before it bounces on the floor. the ball rebounds back at essentially the same speed. if the collision with the floor lasts 0.05 s, what is the average force exerted by the floor on the ball?
Answers: 3
A motor with a power of 7.0 x 10^4 watts lifts a loaded elevator to a height of 20.0 meters for 40 s...
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