waec model questions vol1 2017 physics

Essay • Question 8

Question 8 WAEC_MODEL_QUESTIONS_VOL1 • 2017

A heat engine operates between two thermal reservoirs at temperatures of 600 K and 300 K. Calculate the maximum efficiency of the engine using the Carnot efficiency formula. If the engine produces 500 J of work, calculate the total heat absorbed from the hot reservoir. Show all your workings.

Question Parts

( a )

Calculate the maximum efficiency of the engine.

( b )

Calculate the total heat absorbed from the hot reservoir.

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