What would the speed of an observer be if a red (4. 688 × 1014 hz) traffic light appeared green (5. 555 × 1014 hz) to the observer?

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02-08-2022
Physics

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What would the speed of an observer be if a red (4. 688 × 1014 hz) traffic light appeared green (5. 555 × 1014 hz) to the observer?

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aryanagarwal466 aryanagarwal466 · Answer 1 · 2022-08-09T16:48:54+02:00

The speed of an observer be if a red (4. 688 × 1014 hz) traffic light appeared green (5. 555 × 1014 hz) to the observer is 0.185v using doppler effect

Utilize the approximation of the Doppler shift formula, (delta f)/f = V/c, for V/c 1 to determine which V on the list is closest. It's a little trickier to calculate the precise Doppler shift formula for light. Use what you are aware of. It is often exclusively covered in relativity theory classes. The formula for the Doppler shift of sound heard by a moving observer is NOT the same.

5.551*107 m/s = (Delta f)/f = 0.185 V.

Doppler radar transmits energy in pulses and detects any signal that is returned. The "Doppler shift" seen with sound waves is comparable to the phase shift effect. Due to compression (a change in phase) of sound waves, the "Doppler shift" causes the sound pitch of an item traveling toward you to be higher.

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