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You throw a .4 kg ball against a brick wall, it hits the wall moving left at 30 m/s and rebounds to the right at 20 m/s. What is the impulse delivered by the wall? If it touches the wall for .1s, what is the average force?
A two-ended "rocket" that is at first stationary on a frictionless floor, with its center an origin of an x axis.
A plastic circular loop has a radius R, and a positive charge q is distributed uniformly around the circumference of the loop. what is the magnitude of the magnetic torque on the loop
A sphere consists of a solid wooden ball of uniform density 800 and radius 0.20 and is covered with a thin coating of lead foil with area density 20.
What is the electric field of a parallel plate capacitor that has q=+5.53 uC on one plate and q=-5.53 uC on the other plate. The area of each plate is 0.023m
Suppose the moon were held in its orbit not by gravity but by the tension in a massless cable. What is the speed of the moon in its orbit about the earth
A nail gun fires a nail into a piece of wood. The nail is going a velocity of 6.8 m/s right before entering the wood. The mass of the nail is .06kg. what is the average force on the nail by the wood
A 10 g bullet moving 1000 m/s strikes and passes through a 2.0-kg block initially at rest, as shown. The bullet emerges from the block with a speed of 400 m/s. How much energy was lost in the collision
A 5.27-kg object passes through the origin at time t = 0 such that its x component of velocity is 4.95 m/s and its y component of velocity is -3.03 m/s.
A 0.525 kg ball starts from rest and rolls down the hill with uniform acceleration, travelling 150 m throughout the second 10.0 rm s of its motion.
Compute the voltage drop along a 23 length of household no. 14 copper wire (used in 15- circuits). The wire has diameter 1.628 and carries a 12 current.
A particle of charge +9.2 ?C is released from rest at the point x = 55 cm on an x axis, What is the kinetic energy of the particle at the instant it has moved 12 cm if Q = +61
the shinkansen, the japanese train, runs at high speed. riding on the shinkansen, you notice that the frequency of a crossing signal changes markedly as you pass the crossing. what is the speed of the train
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