Question

Please answer both questions

16. When the gas enclosed beneath the piston shown in the figure receives 1.930 J of heat, Q, from its surroundings, compressing the piston. What is the change in the inthe surroundings in & 1,250 J of work, W,is done by is the change in the internal energy of the gas? in (a) -680 joules (b) +680 joules (e) 3,180 joules (d) +3,180 joules (e) zero joules 2 7. A heat pump removes 2,400 J of heat from the exterior of a house & delivers 3,500 J of heat to the terior of the house. What is the coefficient of performance of the heat pump? (b) 3.2 (c) 0.31 (d) 3.9 (e) 0.69

Answer 1

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