Solution Found!
(a) Which of these two processes is more wasteful of
Chapter , Problem 73(choose chapter or problem)
(a) Which of these two processes is more wasteful of available work? (1) A block moving with 0.50 J of kinetic energy being slowed to rest by sliding (kinetic) friction when the temperature of the environment is 300 K, or (2) A reservoir at 400 K releasing 1.00 kJ of heat to a reservoir at 300 K? Explain your choice. Hint: How much of the 1.00 kJ of heat could be converted into work by an ideal cyclic process? (b) What is the change in entropy of the universe for each process?
Questions & Answers
QUESTION:
(a) Which of these two processes is more wasteful of available work? (1) A block moving with 0.50 J of kinetic energy being slowed to rest by sliding (kinetic) friction when the temperature of the environment is 300 K, or (2) A reservoir at 400 K releasing 1.00 kJ of heat to a reservoir at 300 K? Explain your choice. Hint: How much of the 1.00 kJ of heat could be converted into work by an ideal cyclic process? (b) What is the change in entropy of the universe for each process?
ANSWER:Step 1 of 5
Consider the given data as follows.
The block’s kinetic energy is 
The temperature of the environment is 
The temperature of a reservoir is 
The releasing heat is 
The temperature is 