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According to the first law of thermodynamics, work done by a system will cause _________ in the internal energy, assuming that no heat is transferred to or from the system.

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Final answer:

The work done by a system will cause a decrease in the internal energy, assuming no heat is transferred to or from the system.

Step-by-step explanation:

The first law of thermodynamics states that the change in internal energy of a closed system equals the net heat transfer into the system minus the net work done by the system. In equation form, the first law of thermodynamics is AU = Q-W.

If heat is added to the system, it increases the internal energy and a positive value of Q is used. On the other hand, if heat is removed from the system, it decreases the internal energy and a negative value of Q is used.

Therefore, the work done by a system will cause a decrease in the internal energy assuming no heat is transferred to or from the system.

User Lalit Verma
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