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Two substances, A and B, which are of equal mass but at different temperature, come into...

Two substances, A and B, which are of equal mass but at different temperature, come into thermal contact. The specific heat capacity of substance A is twice the specific heat capacity of substance B. What is the final temperature of both substances when they reach thermal equilibrium? (Assume no other heat loss other than the thermal transfer between the substances.)

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Answer : T = (2T1 + T2)/3

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