Physics archive
The physics archive contains legacy physics content, and is not being updated with new content. We recommend checking out our middle school, high school, and AP Physics courses.
4 units84 videos8 hours
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Unit 1: Forces and Newton's laws of motion
Newton's laws of motion
Normal force and contact force
Unit 2: Work and energy
Unit 3: Waves
Introduction to mechanical waves
Sound
Production of sound ✓ Check-ins3:46
Sound properties: amplitude, period, frequency, wavelength ✓ Check-ins5:16
Speed of sound ✓ Check-ins3:45
Relative speed of sound in solids, liquids, and gases ✓ Check-ins3:19
Decibel Scale ✓ Check-ins10:30
Why do sounds get softer? ✓ Check-ins8:48
Ultrasound medical imaging ✓ Check-ins5:35
The Doppler effect
Wave interference
Wave interference ✓ Check-ins7:24
Constructive and destructive interference ✓ Check-ins13:44
Standing waves on strings ✓ Check-ins13:25
Standing waves in open tubes ✓ Check-ins14:19
Standing waves in closed tubes ✓ Check-ins9:57
Beat frequency ✓ Check-ins11:48
Derivation of beat frequency formula ✓ Check-ins9:55
Unit 4: Discoveries and projects
Discovery of magnetism
Discovery of magnetic fields
Measuring magnetic fields
Discovery of batteries
Zinc copper cell (reduction-oxidation)1:05
Battery meter (galvanometer)0:50
Electrolyte test (pure water vs. vinegar)1:23
Reverse electrodes (polarity)1:23
Electrolyte (strong acid test)0:44
Electrolyte (salt test)1:04
Electrode (distance test)1:06
Electrolyte (temperature test)1:37
Electrode (surface area test)1:07
Standard cell1:09
How much electrolyte does a single cell need?0:40
The battery and electromagnetism ✓ Check-ins6:26
Discovery of electromagnetism
Discovery of resistors
Electric motor
Electrostatics
Projectile launcher
Thermo can
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