Physics: Heat, Work, and Electricity

Flashcards covering key concepts about heat transfer, work, efficiency, and electromagnetism from the physics lecture notes.

Heat is the transfer of __ from a hotter body to a cooler body.

thermal energy

__ is a measure of the average kinetic energy of particles.

Temperature

The three modes of heat transfer are __, __, and __.

Conduction, Convection, Radiation

Thermal efficiency is the ratio of the __ done to the heat input.

useful work

A(n) __ engine converts heat into work by taking heat from a hot body and discharging heat to a cold body.

heat

In a heat engine, waste heat results in __ efficiency.

less than 100 percent

Natural flow of heat occurs from to temperature objects.

higher, lower

Electric generators convert energy into energy.

mechanical, electrical

Electric motors convert energy into energy.

electrical, mechanical

Classified magnetic materials include __, __, and __ materials.

ferromagnetic, paramagnetic, diamagnetic