types of stationary waves

fixed -fixed

wavelength increases by half

fixed-open

wavelength increases by 2 quarters

open-open

wavelength increases the same as fixed-fixed

frequency formula

waves/time

v and wavelength

directly proportional where f is constant

unchanged mediums

speed stays the same

frequency

increases in multiples of fundamental frequency

sum speed of 2 interfering waves

speed of stationary wave

changing frequency

same speed and frequency should be found

changing medium

speed changes and frequency stays the same…find wavelength

changing length

same frequency…find wavelength