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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.

(a) Assuming the pump and the air in it comprise the system, what is the sign of w when you compress the air?

(b) What is the sign of q for this process?

(c) Based on your answers to parts (a) and (b), can you determine the sign of Â¢E for compressing the air in the pump? If not, what would you expect for the sign of Â¢E? What is your reasoning?

(a) Assuming the pump and the air in it comprise the system, what is the sign of w when you compress the air?

(b) What is the sign of q for this process?

(c) Based on your answers to parts (a) and (b), can you determine the sign of Â¢E for compressing the air in the pump? If not, what would you expect for the sign of Â¢E? What is your reasoning?

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