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A 0.247 kilogram ball is approach a player horizontally with a speed of 15.7 m/s. The player strikes the ball with her fist and causes the ball to move in the opposite direction with a speed of 22.0 m/s.
Find what impulse is delivered to the ball by the player? kg.m/s
If the player fist is in contact with the ball 0.060 second, find what is the magnitude of the average force?
A Potter's wheel moves from rest to an angular speed of 0.16rev/s in 26 s. Find its angular acceration in radians per second
A Carnot engine performs work at the rate of 480 kW as using 640 kcal of heat per second. If the temperature of the heat source is 540°C, at what temperature is the waste heat exhausted.
A high-voltage power line carries a current of 124 at a location where the Earth's magnetic field has a magnitude of 0.59 G and points to the north, What direction does the magnetic force point
question a balloon is rubbed with a wool glove. the two items attract one another with a force of strength 0.6 n when
An object with a mass of 5.5 kg is allowed to slide from rest down an inclined plane. What is the speed of the object at the bottom of the plane
The nucleus of an atom has a radius of about 7.9Ã-10-15 m. The electron is normally at a distance of about 3.4Ã-10-11 m from the nucleus, Find the volume of the nucleus
a physics student playing with an air hockey table a frictionless surface finds that if she gives the puck a velocity
At what average rate does the force from the cable. A falling skydiver has a mass of 54.5 kg. What is the magnitude of the skydiver's acceleration when the upward force of air resistance has the magnitude that is equal to one-fourth of his weight.
sphere 1 with radius r1 has positive charge q. sphere 2 with radius 7.0r1 is far from sphere 1 and initially uncharged.
In a crystal an electron is confined to a cubical region of length 0.5nm on a side. estimate the minimum allowed KE of the electron
A transformer on a pole near a factory steps the voltage down from 3600 V (rms) to 120 V (rms). determine the power delivered to the primary
a toy cannon uses a spring to project a 5.39-g soft rubber ball. the spring is originally compressed by 4.93 cm and has
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