Question: A pressure cooker containing water is heated on a stove. Determine the interactions and signs (positive: 1; negative: -1; none: 0) of (a) Q (b)

A pressure cooker containing water is heated on a stove. Determine the interactions and signs (positive: 1; negative: -1; none: 0) of
(a) Q
(b) Wext, if any, as steam is released.

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