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Deep space, sphere A of mass 20kg is located at the origin of an x axis and sphere B of mass 10 kg is located on the axis at x = 0.80 m. Sphere B is released from rest while sphere A is held at the origin.
(a) What is the gravitational potential energy of the two-sphere system just as B is released?
(b) What is the kinetic energy of B when it has moved 0.20 m toward A?
An egg drops from a second-story window, taking 1.12 s to fall and reaching 11.0 m/s just before hitting the ground. Calculate the average magnitude of its acceleration
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A 500-g block is released from rest and slides down a frictionless track that begins 2.40 m above the horizontal, Find the maximum distance the spring is compressed
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A light ray of ? = 430 nm enters at an angle of incidence of 36.2o from air into a block of plastic. Its angle of refraction is 21.7o. What is the speed of the light inside the plastic?
A 130 g copper bowl contains 240 g of water, both at 20.0°C. How much energy (in calories) is transferred to the water as heat
A particle of mass m is confined to move, without friction, in a vertical plane, with axes x horizontal and y vertically up. The plane is forced to rotate with constant angular velocity Omega about the y-axis. Find the quations of motion for x and y..
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