Subject
Mechanical Engineering
Energy, forces and machines
Topic 1 · Beginner
Thermodynamics: First Law
Energy can't be created or destroyed — only moved around as heat and work.
Topic 2 · Beginner
Stress & Strain
How materials resist being pulled, pushed and deformed.
Topic 3 · Intermediate
Fluid Mechanics: Bernoulli's Theorem
Along a streamline, faster flow means lower pressure.