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13 Cards in this Set

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  • Back
What is the formula for wavelength of a string or tube open at both ends?
wavelength = 2L/n where n = the number of full loops of the wave; n = 1,2,3...
What is the formula for wavelength of a tube closed at both ends?
wavelength = 4L/n, where n = 1,3,5...
What is the frequency for a string or tube open at both ends?
frequency = nv/2L
What is the frequency for a tube closed at both ends?
frequency = nv/4L where n = 1,3,5...
The open ends of the pipes are always (nodes/antinodes) while the closed ends are always (nodes/antinodes).
antinodes; nodes
Intensity is equal to: (units)
Power/Area = Energy/time*Area = Force*distance/time*area = mass*acceleration*distance/time*area = kg/seconds(to the 3rd)
Describe the Doppler Effect:
when a source and a detector move relative to one another, the perceived frequency of the sound received differs from the actual frequency emitted even though the source velocity and frequency is unchanged
What is the formula for doppler frequency for sound?
frequency' = [f (+/-) v(object)]/[f (+/-) v(source)]
What are the (+/-) sign conventions for the Doppler effect?
When the observer and source are moving closer together, the + in the numerator and - in the demominator; when moving apart, - in the numerator, and + in the denominator
If the image is reduced, magnification will be (< or >) one, and if enlarged, m will be (< or >) one.
reduced: m < 1
enlarged: m > 1
m = 1: image is same size
If light of intensity S leaves a polarizer, the intensity of the light on the analyzer will be equal to:
S cos(to the 2nd)theta
What is the relation between the electric and magnetic field in a vacuum?
E = cB (c = speed of light)
What is the order of the electromagnetic spectrum, from highest to lowest wavelength?
radio, infrared, visible (ROYGBIV), UV, X Rays, Gamma