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A 30 kg crate is pulled across a level floor with 80 N of force. The coefficient of kinetic friction between the crate and the floor is 0.15. Draw a free body diagram illustrating this situation and find the acceleration of the crate.
A student (m=63 kg) falls freely from restand strikes the ground. During the collision with the ground, hecomes to rest in a time of 0.010 s. From what height did the student fall
The horse on a carousel is 3.8 from the central axis.If the carousel rotates at 8.0×10?2 , how long does it take the horse to go around twice
A spacecraft is in a circular orbit of radius 3.3*104 km arounda 1.9*1030 kg pulsar. The magnetic field of the pulsar at that radial distanceis 1.6*102 T directed perpendicular to the velocity of the spacecraft.
Calculate the kinetic energy a proton gains if it is accelerated, throug a potential difference of 1.00 V
A circular armature coil is used in a motor with a uniform magnetic field of 4.10 T. The coil has a diameter 60 cm, a resistance of 50 ?, how much current is flowing throught the motor
The intensity of a lightbulb with a resistance of 160 ohms is controlled by connecting it in series with an inductor whose inductance can be varied from L = 0 to L sub max. What is the average power dissipated in the lightbulb when L = 0
An electromagnetic wave of wavelength 405 is traveling in vacuum in the direction. The electric field has amplitude 2.20×10?3, What is the frequency of this wave
a a concave spherical mirror forms an inverted image 4.00 times larger than the object. assuming the distance between
A 325 kg crate is lowered to the ground by a helicopter. Its fastened to the end of the vertical cable which has a tension of 3500N. Is the crate speeding up, slowing down, or descending at a constant speed? Show your work
A deuteron (the nucleus of an isotope of hydrogen) has a mass of 3.34×10?27kg and a charge of 1.60×10?19C, Find the speed of the deuteron
kids at a swimming hole swing over the water on a tire swing essentially a simple pendulum and then drop in the water.
A nuclear power plant has an electrical power output of 900 MW and operates with an efficiency of 32%. what is the rise in temperature of the flowing water
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