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When a spring is compressed, the energy changes from kinetic to potential. which best describes what is causing this change?
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Large helium-filled balloons are used to lift scientific equipment to high altitudes. what is the pressure inside such a balloon if it starts out at sea level with a temperature of 10.0ºc and rises to an altitude where its volume is twenty times the original volume and its temperature is – 50.0ºc ?
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When a solid is formed from the combination of two solutions of ionic compounds it is called?...
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