Duration: 3:26

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A sample of liquid in a thermally insulated container
P (a calorimeter) is stirred for \( 2 \mathrm{hr} \). by a mechanical

W linkage to a motor in the surrounding, for this process
(1) \( \mathrm{w}0 ; \mathrm{q}=0 ; \Delta \mathrm{U}=0 \)
(2) \( \mathrm{w}0 ; \mathrm{q}0 ; \Delta \mathrm{U}0 \)
(3) \( \mathrm{w}0 ; \mathrm{q}0 ; \Delta \mathrm{U}=0 \)
(4) \( \mathrm{w}0 ; \mathrm{q}=0 ; \Delta \mathrm{U}0 \)
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