A bird is flying directly toward a stationary bird-watcher
A bird is flying directly toward a stationary bird-watcher and emits a frequency of 1380 Hz. The bird-watcher, but, hears a frequency of 1450 Hz. What is the speed of the bird, expressed as a percentage of the speed of sound?
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a bird is flying directly toward a stationary bird-watcher and emits a frequency of 1380 hz the bird-watcher but hears
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