The internal energy of a system is initially 35 J. The system does 28 J of work. What is the system’s final internal energy when a total of 39 J of energy is added to the system’s heat.
A 6.5 –kg block of ice is placed on a concrete floor which has a constant temperature of 25.5 ℃. The ice melts as it absorbs 2.09 x 106 J of heat. What is the change in entropy of the ice ? b. of the floor? c. of the universe ( net change)
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grc jyteche jyteche us iz kc brink aeichi
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