How fast does it move after the bullet emerges
A 23-g bullet traveling 285m/s penetrates a 4.5kg block of wood and emerges cleanly at 230m/s. If the block is stationary on a frictionless surface when hit, how fast does it move after the bullet emerges?
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A cart loaded with bricks has a total mass of 20.4 kg and is pulled at constant speed by a rope. The rope is inclined at 31? above the horizontal and the cart moves 17.4 m on a horizontal ?oor. The coeffcient of kinetic friction between ground and
What is the smallest separation distance between the speakers that will produce destructive interference at a listener standing in front of them? Take the speed of sound to be 344 m/s.
How do you turn a harmonic minor scale into a melodic minor scale?
If the total initial kinetic energy of the fission fragments is 150 MeV, what is the initial kinetic energy of each? What is the total kinetic energy shared by the four prompt neutrons?
In one cycle, a steady device transfers 1.55 × 106 J of energy from a reservoir at 450 K to a reservoir at 300 K. Find the change in entropy (after one complete cycle), (a) for the device, and (b) for the environment.
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Which makes the pendulum swing upward in an arc. Determine the vertical and horizontal components of the pendulum's displacement.
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