Physics Final

T

f

A

λ

the distance between any two successive parts of a wave

the magnitude of the maximum displacement, or the maximum distance, from the particles equilibrium position

the number of waves per second that pass by a given point during each second

f=1/T

the time for one complete wavelength to pass by a given point

v=λf

the disturbance occurs perpendicular to the direction of travel of the wave. Example: wave on a stretched string

the disturbance occurs parallel to the direction of travel of the wave. Example: sound

20 Hz to 20 kHz

At any time, the combined waveform of two or more interfering waves is given by the sum of the displacements of the individual waves at each point in the medium

has displaced antinodes at both ends.

L=n(1/2λ_n)

• has displaced antinode at the open end
• has displaced node at closed end

L=m(1/4λ_m)

F_n= V/λn = n(v/2L) = nf₁

n= 1,2,3,...

F_m = V/λm = m(V/4L) = mf₁

m= 1,3,5,...

Loudness

Pitch

Quality

10 log (I/I₀)

10^-12 w/m²

F_o = ((V±V₀) / V∓V₀)) f_s

• o= observer
• s=source
• v=speed of sound

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