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ivolga24 [154]
3 years ago
7

A system dissipates 12 JJ of heat into the surroundings; meanwhile, 28 JJ of work is done on the system. What is the change of t

he internal energy ΔEthΔEthDeltaE_th of the system?
Physics
1 answer:
fredd [130]3 years ago
8 0

Given that,

A system dissipates 12 J of heat into the surroundings.

28 J of work is done on the system.

To find,

The internal energy of the system.

Solution,

The first law of thermodynamics is used here. According to this law,

\Delta E=Q-W

Q is heat and W is work done

Here,

Q = -12 J is the heat dissipated by the system

W = -28 J is the work done on the system

ATQ,

\Delta E=(-12)-(-28)\\\\=-12+28\\\\=16\ J

So, the change of internal energy of the system is 16 J.

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