Calculate the amount of heat power that is generated by the isothermal process

[accidentprone]

Homework Statement

200W of power is required for an isothermal process of a larger cyclic process.
Use the first law of thermodynamics to calculate the amount of heat power that is generated by the isothermal process.

Homework Equations

Change in heat energy = change in internal energy + mechanical work done on surroundings

The Attempt at a Solution

I'm a little lost as to how to begin! I know an isothermal process is one in which the temperature remains constant but is that needed here? Or will it simply be employed in the rest of the question after this?

Also I know that I can change the mechanical work into (pressure)(change in volume) but I feel this leads nowhere due to the lack of other information in the question!

 

[eczeno]

hello,

in an isothermal process, the internal energy is also constant (assuming this is an ideal gas), and so Q=-W.

 

[accidentprone]

Oh ok - I should be good from there with the rest of the question... Thanks a million!

 

[eczeno]

cheers.