Engineering, 05.10.2019 12:00 QueenYaya

Assume the work done compressing the he gas is -63 kj and the internal energy change of the gas is 79 kj. what is the heat loss or heat gain of this process?

Answers

Heat gain of 142 kJ

Explanation:

We can see that job done by compressing the He gas is negative, it means that the sign convention we are going to use is negative for all the work done by the gas and positive for all the job done to the gas. With that being said, the first law of thermodynamics equation will help us to solve this problem.

Δ U = Q + W ⇒ Q = Δ U -W

Q = 79 - (-63) = 142 kJ

Therefore, the gas gained heat by an amount of 142 kJ.

Answer from: Quest

twist boundary

explanation:

Answer from: Quest

unlike the threaded fasteners which are used to clamp the machine members, power screws are used to transmit power. common applications of power screws are: screw jacks: to lift weight. lead screw of lathe: for axial movement of tool and its precise positioning.

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Assume the work done compressing the he gas is -63 kj and the internal energy change of the gas is 7...