Test 2 topics, more or less

center of mass (and torque)

energy

waves

- wavelength

- frequency

- speed

-amplitude

- crests and troughs

speed = frequency x wavelength

(same equation as above, but with c for speed, when waves are electromagnetic)

mechanical vs. electromagnetic waves

harmonics

music - octaves, 1.0594

Doppler effect

- red shift, blue shift

sound in (organ) pipes

light reflection

light refraction

index of refraction

lenses and mirrors (convex and concave)
electromagnetic spectrum