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If a balloon is taken outside on a very cold day, what will occur?
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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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Physics, 22.06.2019 13:50
Observations show that interstellar clouds can have almost any shape and
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True or false air contains 78 percent hydrogen, 21 percent oxygen, and 0.03 percent carbon dioxide...
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