This is a question about the Doppler Effect I needed help with please. Thanks?!!

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1 Answer
Dec 17, 2017

No! Very bad answer :( Grrrrrrr.

Explanation:

The Doppler effect is the apparent change in wavelength (and hence frequency, which is more noticeable as it corresponds to colour for light and pitch for sound) due to the relative movement of source and detector.

The speed of the wave is dependent on the medium, it is a consequence of the combination of frequency and wavelength and cannot be affected by the source moving.

The equation used isn’t simple algebra, and depends on whether source, or detector or both (so called ‘double doppler’) are moving relative to each other but in shows the apparent frequency, f’ as being the one perceived by you. This one is for the source moving away:
#f’ = f_0((v_(wave))/(v_(wave) + v_(source)))# where #f_0# is the original frequency.

There are actually 6 (or 8 depending on how you count them) equations in all! See here http://formulas.tutorvista.com/physics/doppler-shift-formula.html?view=simple or here http://hyperphysics.phy-astr.gsu.edu/hbase/Sound/dopp.html for further info!