The specific heat of many solids at very low temperatures varies with absolute temperature t according to the relation c=atpower 3 where a is a constant. How much heat energy is needed to raise the temperature of 0.5 kg substance from t=0 to t=20k
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The specific heat of a metal at low temperature varies according to S=aT^3 where a is a constant and T is absolute temperature
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UseS=aT3..............
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