Q:
# What Is the Doppler Effect Equation?

**In the basic equation for Doppler effect, the frequency equals ([c + v_r]/[c + v_s]) x f_0.** In that equation, c is equal to the velocity of the waves, v_r is the velocity of the sound's received, v_s is the velocity of the source and f_0 is the emitted frequency.

The Doppler effect, also known as the Doppler shift, measures the frequency of a wave when the receiver or the source of the sound are moving in relation to one another. The change in frequency can be found by dividing the change in velocities over the velocity of the wavelength multiplied by the initial frequency.

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