Created by StemPy LabA gas takes in of heat and does of work pushing a piston out. What is the change in its internal energy?
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← A person with 1.7 m² of skin at 34 °C sits in a room whose walls are at 22 °C. The skin's emissivity is 0.90. What net power does the person lose by radiation? (σ = 5.67 × 10⁻⁸ W m⁻²K⁻⁴.)A gas is squeezed: 150 J of work is done on it, and at the same time it gives out 40 J of heat. What is the change in its internal energy? →
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