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A ball of mass 0.60 kg is fired with velocity 200 m/s into the barrel of a spring gun of mass 2.0 kg initially at rest on a frictionless surface. The ball sticks in the barrel at the point of maximum compression of the spring. No energy is lost to friction. What fraction of the ball's initial kinetic energy is stored in the spring?
A rail car that weighs 34 N is accelerated at 8.3 m/s/s for 5.9 seconds. How much work is done on the rail car? The acceleration is constant
In a ballistics test, a 25.0g bullet traveling horizontally at 1200m/s goes through a 40.0cm -thick 350kg stationary target, What average force does the bullet exert on the target
An ac power generator produces 30 A rms at 3791 V. The voltage is stepped up to 108000V by an ideal transformer, What percentage of the power delivered by the generator
An object is placed to the left of the converging lens, and the final image produced by the two-lens combination lies 21.2 cm to the left of the diverging lens. How far is the object from the converging lens
Starting from rest, a 1.8 10-4-kg flea springs straight upward. While the flea is pushing off from the ground, What is the flea's speed when it leaves the ground
Two point charges lie on the x axis. A charge of +9.5 µC is at the origin, and a charge of -9.5 µC is at x = 10.0 cm, What is the net electric field at x = -4.0 cm
A 1.1-pF parallel plate capacitor has a potential difference of 12.0 V across it. The plates are 4.5 mm apart, and the space between them contains air. obtain the charge on the capacitor
if system A has 4 cycles/pulse and is operating at 5 MHZ and system B has 5 cycles/pulse and is operating at 10 MHZ, which system has the shorter pulse duration
Mary needs to row her boat across a 100-{rm m}-wide river that is flowing to the east at a speed of 1- {rm m/s}. Mary can row the boat with a speed of 2- {rm m/s} relative to the water.
Three pucks have masses m1=100g, m2=125g, and m3=150g. The pucks with masses m1 and ms move with velocities v1=4.00m/s in the negative-y direction, what is the angular momentum of the system
A dog and her handler are at rest and are facing each other at a distance 40.0meters. Find the (common) position where the dog and the handler meet
A 42 kg pole vaulter running at 11 m/s vaults over the bar. Her speed while she is above the bar is 0.7 m/s. Avoid air resistance, as well as any energy absorbed by pole, and determine her altitude as she crosses the bar.
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