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Two protons are moving directly toward one another. When they are very far apart, their initial speeds are 2.77 106 m/s. What is the distance of closest approach?
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A cockroach of mass m lies on the rim of a uniform disk of mass 8m that can rotate freely about its center like a merry-go-round. at first the cockroach and disk rotate together with an angular velocity of 0.200 rad/s. Then the cockroach walks half..
If a car of mass 1000 kg is moving along a highway at 92 km/h, what is car's kinetic energy as determined by someone standing alongside the highway.
Compute the magnetic flux
Imagine a very heavy cube of pure gold that is 1.23 m on a side. Approximate the atoms in this cube as little cubes, How far would the line stretch
A grinding wheel 0.45 in diam rotates at 2900. What is acceleration of a point on the edge of the grinding wheel.
A small steel ball with a mass of 80 g is releasesd from a resting height of 1.25 m above a ridgid metal plate. What is the velocity of ball before impact.
The two forces in each pair could have different physical origins (for instance, one of the forces could be due to gravity, and its pair force might be due to friction or electric charge).
While running, a person dissipates about 0.60 J of mechanical energy per step per kilogram of body mass, how fast is the person running
Which statement is true concerning the magnitude of the net force on the plane.
An 854 kg (1887 lb) dragster, starting from rest, attains a speed of 27.1 m/s (60.7 mph) in 0.59 s.
A ball is thrown upward from the ground with an initial speed of 23.90 m/s; at = same instant, a ball is dropped from a building 16 m high. After how long will the balls be at the same height.
If the car was in neutral and its brakes were off, so that the collision is approximately elastic, find out the final speed of the truck.
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