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Two blocks are free to slide along the frictionless wooden track shown below. The block of mass m1 = 4.94 kg is released from the position shown, at height h = 5.00 m above the flat part of the track. Protruding from its front end is the north pole of a strong magnet, which repels the north pole of an identical magnet embedded in the back end of the block of mass m2 = 9.30 kg, initially at rest. The two blocks never touch. Calculate the maximum height to which m1 rises after the elastic collision.
An AC adapter for a telephone-answering unit uses a transformer to reduce the line voltage of 120 V (rms) to a voltage of 10.0 V. What is the rms power delivered to the transformer
Quarterback passed a ball to a receiver while running at 1.5 m/s forward. The ball was released at a height of 2.5 meters with an angle of 45 degrees, Find the final velocity of the ball and its direction
A boy in a wheelchair (total mass 51.0 kg) has speed 1.40 m/s at the crest of a slope 2.40 m high and 12.4 m long. Find the work he did in pushing forward on his wheels
A thick cylindrical shell of inner radius a= 5 cm and outer radius b= 10 cm and has a net charge ZERO. find the inner and outer surface charge densities
Kieran takes off down a 50m high, 10° slope on his jet-powered skis. The skis have a thrust of 320 N. The combined mass of skis and Kieran is 50 kg (the fuel mass is negligible). Kieran's speed at the bottom is 40 m/s. What is the coefficient of k..
Mike is riding his unicycle of wheel diameter 20 in. Mike rides for 30 m with an initial angular velocity of 0.75 rad/s, What is the unicycle's linear velocity at 30 m?
A swimming pool 2.6 m by 1.0 m has a uniform depth of 2.0 m, What is the absolute pressure at the bottom of the pool
The x-component of a velocity vector that has an angle of 31 degrees to the +x-axis has a magnitude of 4.9m/s. What is the magnitude of the velocity
A Ge semiconductor has a gap of 0.7 eV between the valence and conduction band. What fraction of the electrons are in the conduction band
at what height above the earth is the acceleration due to gravity 10% of its value at the surface, find the speed of a satellite orbiting at that height?
The kinetic energy of a proton is 80% of its total energy. What is the momentum in kg·m/s of the proton?
q1. a parachutist descending at a speed of -13.0 ms loses a shoe at the altitude of 54.0 m.a when does the shoe reach
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