In this week\'s lab, we will operate a 4-stage heat engine. The cycle of the hea

Question

In this week's lab, we will operate a 4-stage heat engine. The cycle of the heat engine is schematically shown in the figure above (page 192 in the lab manual). In the process from point b to point c, the gas in the engine is heated to a higher temperature. As the gas is heated, it expands pushing the syringe piston up. Let's assume that this process is isobaric. The temperature of the gas at point b is 20.4 ° C, and the gas temperature at point c is 63.1 ° C. If the diameter of the syringe piston is 1 cm and the volume of the gas at point b is 24.3 cm3, how much will the piston be pushed up at point c compared to its height at point b?

Explanation / Answer

if the process is isobaric

V!/V2 = T1/T2

V1 = 24.3 cm3

V2 = 24.3 + (1)2 h cm3

[24.3 + (1)2 h]/(24.3) = 63.1/20.4

h = 16.19 cm

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