What is the change in internal energy of the system

Asked by wiki @ 10/11/2021 in Physics viewed by 608 People

What is the change in internal energy if 50 J of heat are released from a system, and the system does 80 J of work on its surroundings?

Answered by wiki @ 10/11/2021

Change in the internal energy of the system= -130 J

Explanation:

Heat released= Q=-50 j

Work=80 J

we use the first law of thermodynamics

Q= ΔU + W

-50 = ΔU +80

ΔU =-130 J

Do you know the better answer?

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