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Problem

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Textbook Expert
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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