Physics, 22.04.2020 03:00 Daddysgirl2019
A bat locates insects by emitting 25.3 kHz ultrasonic chirps and then listening for echoes from insects flying around it. Humans can hear sounds with frequencies up to 20 kHz. How fast would a bat have to fly and in which direction (positive away from and negative towards a stationary human listener) in order for a person to hear these chirps
Answers: 1
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Scientific models are based on current knowledge, which can limit their effectiveness when new discoveries are made.
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According to an observer on earth, planet x is stationary. maria and samir depart earth on their spaceships at the same time, each flying at 0.5c. maria flies toward planet x and samir flies in the opposite direction. according to maria, her voyage to planet x takes 9 years. how many years does maria's voyage take according to samir?
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Which of the following is another term for a planned economy
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A bat locates insects by emitting 25.3 kHz ultrasonic chirps and then listening for echoes from inse...
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