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A ball of mass 1.10 kg moving with speed of 2.0 m/s hits a wall and bounces back with the same speed in the opposite direction. What is the change in the ball's kinetic energy?
How far must it now sail to reach its original destination. find the potential energy of the system.
Assuming that the mass of the planet is distributed with spherical symmetry, what is its mass.
mitch throws a 50 gram lump of clay with a speed of 20 m/s at a 500 gram target, find the coefficient of friction between the target and the surface
A bat hits a moving baseball. If the bat delivers a net eastward impulse of 1.3 N-s and the ball starts with an initial horizontal velocity of 3.8 m/s to the west and leaves with a 5.1 m/s velocity to the east
question1a race car starts from break on a circular track of radius 463 m. the cars speed increases at constant rate of
After a day of testing race cars, you decide to take your own 1478 kg car onto the test track. While moving down the track at 11.7 m/s, you suddenly accelerate to 28.8 m/s in 12.6 s. What average net force have you applied to the car during tha..
iron atoms have been detected in the sun's outer atmosphere, some with many of their electrons stripped away. What is the net electric charge(in coulombs) of an iron atom with 26 protons and 7 electrons? Be sure to include the algebraic sign (+ or..
A point charge of +6.3? C is located 0.31 m from a second point charge of -4.8? C. What is the absolute magnitude of the force on each charge?
Calculate the speed of an electron after it accelerates from rest through a potential difference of 160 .
An object acted on by three forces moves with constant velocity. Find the direction and magnitude of the third force acting on the object
Consider three capacitors having capacitances of 5.51, Find their equivalent capacitance if they are connected for both: in parallel and in series
A roller coaster is riding along the rails at an amusement park. Explain why the normal force the track exerts on the coaster does zero work on it
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