Define 2nd law of thermodynamics in two ways

[ZedCar]

Homework Statement

Define the second law of thermodynamics in two different ways and show these two ways are equivalent.

Homework Equations

The Attempt at a Solution

Could anyone give me any pointers as to what this might mean? I know what the 2nd law of thermodynamics states, but how would I define it in two different ways?

Thank you.

 

[Andrew Mason]

Could anyone give me any pointers as to what this might mean? I know what the 2nd law of thermodynamics states, but how would I define it in two different ways?

It is a reference to the different statements of the second law by Clausius and by Lord Kelvin.

AM