- #1

HELLO11

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**[SOLVED] Heat Engines and the Carnot Cycle**

## Homework Statement

The operating temperatures for a Carnot engine are Tc and Th= Tc + 55K. The efficiency of the engine is 15%.

How do i find Tc?

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- Thread starter HELLO11
- Start date

- #1

HELLO11

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The operating temperatures for a Carnot engine are Tc and Th= Tc + 55K. The efficiency of the engine is 15%.

How do i find Tc?

- #2

nicksauce

Science Advisor

Homework Helper

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One equation one unknown should not be a problem...

- #3

HELLO11

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- #4

dynamicsolo

Homework Helper

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- #5

HELLO11

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Do i set e= 0.15 to the equation above? and if i do how do i go about getting the answer?

- #6

dynamicsolo

Homework Helper

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Do i set e= 0.15 to the equation above?

That's correct.

and if i do how do i go about getting the answer?

You will have to re-arrange the equation algebraically. Starting from

[tex]0.15 = 1 - \frac{Tc}{Tc+55}[/tex] , the first step would be

[tex]\frac{Tc}{Tc+55} = 1 - 0.15 = 0.85[/tex]

- #7

HELLO11

- 19

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thanks for the help

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