Frequency of the reflected ultrasonic echo
A bat flying straight toward a wall at 11m/s emits a pulse at 60kHz. What is the frequency of the reflected ultrasonic echo wave reaching a stationary observe standing under the bat? Take the speed of sound to be 341m/s.
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What about exponentiation? Find all solutions in positive real numbers to (a∧b)∧c =a∧(b∧c). If stuck, Consider more restricted questions, such as what are all the solutions to this equation if a,
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