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Objects A and B of equal mass are brought into close thermal contact with each other,...

Objects A and B of equal mass are brought into close thermal contact with each other, but they are well isolated from their surroundings. Initially TA = 0°C and TB = 100°C. The specific heat of A is the same as the specific heat of B. The two objects will soon reach a common final temperature Tf.

The final temperature is:

a. Tf > 50°C.

b. Tf < 50°C.

c. Tf = 50°C.

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