A comprehensive introduction to the fundamental concepts of physics as tested on the MCAT, including mechanics, thermodynamics, electricity, and more.
Physics isn't just about moving—it's about making things move! Work, energy, and power describe how you make things happen.
Work is done when a force moves something. It's calculated as:
\( W = Fd \cos\theta \)
where \( \theta \) is the angle between the force and the direction of movement.
Power is how quickly work is done:
\( P = \frac{W}{t} \)
Every time you climb stairs, pedal a bike, or charge your phone, you're dealing with work, energy, and power!
Lifting a box onto a shelf requires work against gravity.
A light bulb uses electrical power to produce light and heat.
Work transfers energy, and power measures how fast energy is transferred.