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