The figure shows a pV diagram of a gas for a complete cycle.During part bc of the cycle,1190 J of thermal energy through the process of heating flows into a system,and at the same time the system expands against a constant external pressure of as its volume increases from to Calculate the change in internal (thermal)energy of the system during part bc of the cycle.If the change is nonzero,be sure to indicate whether the change is positive or negative.
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