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(B) The work done by a gas during a constant pressure (isobaric) process is given by the formula: $W = P \Delta V$.Here, $P = 400 	ext{ kPa} = 400

Vedclass · Accepted Answer

$12$

Vedclass · Answer

(B) The work done by a gas during a constant pressure (isobaric) process is given by the formula: $W = P \Delta V$.Here, $P = 400 	ext{ kPa} = 400 	imes 10^3 	ext{ Pa}$.The change in volume $\Delta V$ is equal to the cross-sectional area $A$ multiplied by the displacement $h$.Given $A = 0.3 	ext{ m}^2$ and $h = 10 	ext{ cm} = 0.1 	ext{ m}$.Therefore, $\Delta V = A 	imes h = 0.3 	ext{ m}^2 	imes 0.1 	ext{ m} = 0.03 	ext{ m}^3$.Now, substitute the values into the work formula:$W = (400 	imes 10^3 	ext{ Pa}) 	imes (0.03 	ext{ m}^3)$$W = 400,000 	imes 0.03 = 12,000 	ext{ J}$.Converting to kilojoules: $W = 12 	ext{ kJ}$.

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