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Which sound characteristic is not affected by the relative motion of an object
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1. jay fills a wagon with sand (about 20 kg) and pulls it with a rope 30 m along the beach. he holds the rope 25° above the horizontal. the rope exerts a 20-n tension force on the wagon. how much work does the rope do on the wagon?
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Why is the energy that results from a roller coaster's position at the top of a hill referred to as potential energy?
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Give two examples of when you would need to use the measure skill in science?...
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