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## Homework Statement

An ideal Carnot engine produces a power output of 5kW at a thermal efficiency of 35% while rejecting heat reversibly to a reservoir at 30degrees. It achieves this output while executing 10 cycles per second.

a) What temperature is the engine recieving its heat supply?

b)What are the rates of heat supply to and heat rejection from the engine?

c)Hence determine the change in the total entropy of the working fluid during each of the two heat transfer process.

## Homework Equations

Not really given but I got first part n_carnot=(Th-TL) / TH

## The Attempt at a Solution

I use that about equation for part a to find Th which is where the temperature recieving the heat supply also which is process 1-2 isothermal heat addition.

But im totally stoned about part b and c. How can I calculate the rates of heat supply etc, would someone be able gimme ahint on how to even start it?

Thanks