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When an object is heated it contracts. a. true b. false
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In a game of pool, ball a is moving with a velocity v0 of magnitude v0 = 15 ft/s when it strikes balls b and c, which are at rest and aligned as shown. knowing that after the collision the three balls move in the directions indicated and assuming frictionless surfaces and perfectly elastic impact (that is, conservation of energy), determine the magnitudes of the velocities va, vb, and vc.
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1. Two forces are applied to a car in an effort to move it, as shown in P4.12. 450 N at angle 10° ....
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