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Did you know?
Light from the Sun takes ~8 minutes 20 seconds to reach Earth, travelling at 300,000 km/s.
Did you know?
Light from the Sun takes ~8 minutes 20 seconds to reach Earth, travelling at 300,000 km/s.
A speeding motorcyclist sees traffic jam ahead of him. He slows down to km/h. He finds that traffic has eased and a car moving ahead of him at km/h is honking at a frequency of Hz. If the speed of sound is m/s, the frequency of the horn as heard by him will be
To solve this problem, we will use the Doppler effect formula for sound.The formula for the observed frequency when both the source and observer are moving is:
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