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Object A, with Heat Capacity CA and Initially at Temperature

Question 52

Multiple Choice

Object A, with heat capacity CA and initially at temperature TA, is placed in thermal contact with object B, with heat capacity CB and initially at temperature TB.The combination is thermally isolated.If the heat capacities are independent of the temperature and no phase changes occur, the final temperature of both objects is:


A) (CATA - CBTB) /(CA + CB)
B) (CATA + CBTB) /(CA + CB)
C) (CATA - CBTB) /(CA - CB)
D) Object A, with heat capacity C<sub>A</sub> and initially at temperature T<sub>A</sub>, is placed in thermal contact with object B, with heat capacity C<sub>B</sub> and initially at temperature T<sub>B</sub>.The combination is thermally isolated.If the heat capacities are independent of the temperature and no phase changes occur, the final temperature of both objects is: A) (C<sub>A</sub>T<sub>A</sub> - C<sub>B</sub>T<sub>B</sub>) /(C<sub>A</sub> + C<sub>B</sub>) B) (C<sub>A</sub>T<sub>A</sub> + C<sub>B</sub>T<sub>B</sub>) /(C<sub>A</sub> + C<sub>B</sub>) C) (C<sub>A</sub>T<sub>A</sub> - C<sub>B</sub>T<sub>B</sub>) /(C<sub>A</sub> - C<sub>B</sub>) D) E)
E) Object A, with heat capacity C<sub>A</sub> and initially at temperature T<sub>A</sub>, is placed in thermal contact with object B, with heat capacity C<sub>B</sub> and initially at temperature T<sub>B</sub>.The combination is thermally isolated.If the heat capacities are independent of the temperature and no phase changes occur, the final temperature of both objects is: A) (C<sub>A</sub>T<sub>A</sub> - C<sub>B</sub>T<sub>B</sub>) /(C<sub>A</sub> + C<sub>B</sub>) B) (C<sub>A</sub>T<sub>A</sub> + C<sub>B</sub>T<sub>B</sub>) /(C<sub>A</sub> + C<sub>B</sub>) C) (C<sub>A</sub>T<sub>A</sub> - C<sub>B</sub>T<sub>B</sub>) /(C<sub>A</sub> - C<sub>B</sub>) D) E)

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