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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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What is the single most important equation in all of physics?
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Length of spring is 8cm when mass is 4kg is hang on it its become 16cm what is its spring constant?...
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