The figure shows a Carnot heat engine driving a Carnot refrigerator. PART A Dete

ID: 1364744 • Letter: T

Question

The figure shows a Carnot heat engine driving a Carnot refrigerator.

PART A

Determine Q1.

Express your answer to two significant figures and include the appropriate units.

PART B

Determine Q2.

Express your answer to two significant figures and include the appropriate units.

PART C

Determine Q3.

Express your answer to two significant figures and include the appropriate units.

PART D

Determine Q4.

Express your answer to two significant figures and include the appropriate units.

PART E

Is Q3 greater than, less than, or equal to Q1?

PART F

Do these two devices, when operated together in this way, violate the second law?

A)
Q1 is already given
It equals 1000 J

B)
use:
W/Q1 = 1-(TL/TH)
W/Q1 = 1- (300/600)
W/Q1 = 0.5
W=0.5*Q1 = 0.5*1000 = 500 J

Q2 = Q1- W
= 1000 - 500
= 500 J

C)
use:
W/Q4 = 1- (400/500)
500/Q4 = 0.2
Q4= 2500 J

Q3 = Q4+W
= 2500 + 500
= 3000 J

D)
As calculated above:
Q4=2500 J

E)
Greater

F)
NO, There is temperature difference between them and hence energy given out doesn't equal energy going in

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