Which of the following is the correct express | vedclass

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(B) The first law of thermodynamics is given by $\Delta U = Q + W$.For an adiabatic process, there is no exchange of heat between the system and the s

Vedclass · Accepted Answer

$-\Delta U = -W$

Vedclass · Answer

(B) The first law of thermodynamics is given by $\Delta U = Q + W$.For an adiabatic process, there is no exchange of heat between the system and the surroundings, so $Q = 0$.Substituting $Q = 0$ into the first law equation, we get $\Delta U = W$.Alternatively, if work is done by the system ($W$ is negative), then $\Delta U = -W$, which can be written as $-\Delta U = W$ or $\Delta U = -W_{on}$.Looking at the options, $-\Delta U = -W$ simplifies to $\Delta U = W$, which is the correct mathematical representation for an adiabatic process where $W$ is the work done on the system.

Which of the following is the correct expression of the first law of thermodynamics for adiabatic processes?

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