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An asteroid is moving along a straight line. A force acts along the displacement of the asteroid and slows it down. The asteroid has a mass of 5.6× 104 kg, and the force causes its speed to change from 7800 to 5600m/s.
(a) What is the work done by the force?
(b) If the asteroid slows down over a distance of 1.3× 106 m determine the magnitude of the force.
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The average lifetime of a muon is about 2 µs. Estimate the minimum uncertainty in the rest energy of a muon
Two musicians are comparing their clarinets. The first clarinet produces a tone that is known to be 442Hz, If the second clarinet produces a higher pitched tone than the first clarinet, what is the second clarinet's frequency
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Light shone from a mystery material into water undergoes total internal reflection at an angle of 33.4 degrees. What is the index of refraction of the mystery material?
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