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Thermodynamics - Question with my answer
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[QUOTE="Basic_Physics, post: 4529229, member: 443903"] Work and energy go hand in hand. The system will loose energy if it is doing positive work and gain energy if it is doing negative work. It is doing positive work if it is expanding, since it is exerting an outwards force against the atmosphere while expanding, negative work if contracting, since the system is still exerting an outwards force on the atmosphere, but now it is motioning in the opposite direction to the force, that is contracting inwards. Also if ΔU is positive then we have a net energy flow into the system. We also need to consider the heat flow, which is a form of energy. [/QUOTE]
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Thermodynamics - Question with my answer
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