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2. In the last three columns of the following table, fill in the boxes with the correct signs (-, +, or
0) for AQ, AW, and AEint. For each situation, the system to be considered is identified.
System
Situation
Rapidly pumping up a Air in the pump.
bicycle tire.
Pan of room-temperature Water in the pan.
water sitting on a hot stove.
Air quickly leaking out of a
balloon.
Air originally in the
balloon.
AQ
AW
DE int

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