Entropy and the Second Law

Why heat flows one way, and what that means for engines.

Log in to take this quiz

Why heat flows one way, and what that means for engines.

The Ideal Gas Law · Thermal Energy Transfer and Equilibrium · The First Law of Thermodynamics · Entropy and the Second Law of Thermodynamics

Phy

Your AI physics tutor

Hey! I'm Phy, your AI physics tutor. Need help with a question? Just ask!

I can walk you through problems step-by-step, analyze your score trends, generate similar practice questions, or explain any concept you're stuck on.

Phy Chat

A real-time assistant that builds tests, explains concepts, and tracks progress.

Available to Educators. Coming soon to Pro and Pro+.