You may have noticed that when you compress the air in a bicycle pump, the body of the pump gets warmer.Assuming the pump and the air in it comprise the system, what is the sign of w when you compress the air?What is the sign of q for this process?Based on your answers to parts a and b, can you determine the sign for []E for compressing the air in the pump? If not, what would you expect for the sign of []E? What is your reasoning?

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Asked Dec 28, 2019
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  • You may have noticed that when you compress the air in a bicycle pump, the body of the pump gets warmer.
  1. Assuming the pump and the air in it comprise the system, what is the sign of w when you compress the air?
  2. What is the sign of q for this process?
  3. Based on your answers to parts a and b, can you determine the sign for []E for compressing the air in the pump? If not, what would you expect for the sign of []E? What is your reasoning?
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Expert Answer

Step 1
  1. Work is done on the system by the surroundings when the air is compressed in bicycle pump. Therefore, the sign of w is positive. W >...

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