The change in internal energy equals

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Question

(D) According to the first law of thermodynamics,the change in internal energy $(\Delta U)$ of a system is given by the equation: $\Delta U = Q - W$,w

Vedclass · Accepted Answer

adiabatic work

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(D) According to the first law of thermodynamics,the change in internal energy $(\Delta U)$ of a system is given by the equation: $\Delta U = Q - W$,where $Q$ is the heat exchanged and $W$ is the work done by the system. If the process is adiabatic,there is no exchange of heat,so $Q = 0$. Substituting this into the equation gives $\Delta U = -W$. This implies that the change in internal energy is equal to the work done on the system (or the negative of the work done by the system) during an adiabatic process. Therefore,the change in internal energy equals adiabatic work.

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