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-- Changing the frequency/wavelength has no effect on the speed.

(Notice that all electromagnetic waves, from wavelengths of perhaps 10-19 meters to

perhaps 1,000 kilometers, travel with the same speed.)

(Also notice that if the baritone sax plays a note together with the female vocalist, then

you hear them at the same time, no matter how far from the stage you're seated.)

-- Changing the frequency causes the wavelength to change, by the same factor

in the opposite direction.

-- Changing the speed causes the wavelength to change, by the same factor

in the same direction.

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Q: How is speed affected of the frequency or wavelength changes?
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Describe how the frequency of a wave changes as the wavelength changes?

it is directly proportional to frequency so if frequency increases wavelength also increases


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