Textbook ExpertVerified Tutor
12 Nov 2021
Given information
It is given that sweat evaporates from the skin, cooling the skin that means the evaporating sweat is the system.
Step-by-step explanation
Step 1.
Evaporating sweat is the system. refers to the internal energy change of the system. Energy entering the system through heat or work carries a positive sign and energy leaving the system through heat or work carries a negative sign.
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