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OpenStudy (anonymous):
a mass of 1 kg copper rod is heated at a constant pressure of 100 kPa to temperature changes from 20 degrees Celsius to 50 degrees Celsius. if the density is known, the length expansion coefficient and the specific heat of copper in a row is 8.92 X 10 ^ 3 kg / m ^ 3, 1.7 X 10 ^ -5 degrees Celsius, and 387 j / kg degrees Celsius, then the change energy in the process is about???
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