A person holds a rifle horizontally and fires at a target. The bullet has a muzzle speed of 200 m/s, and the person hears the bullet strike the target 1.00 s after firing it. The air temperature is 72 oF. What is the distance to the target?
Answer to relevant QuestionsA freshwater dolphin sends an ultrasonic sound to locate a prey. If the echo off the prey is received by the dolphin 0.12 s after being sent, how far is the prey from the dolphin? A bat moving at 15.0 m/s emits a high-frequency sound as it approaches a wall that is 25.0 m away. Assuming that the bat continues straight toward the wall, how far away is it when it receives the echo? (Assume the air ...Calculate the intensity level for (a) The threshold of hearing and (b) The threshold of pain. Average speech has an intensity level of about 60 dB. Assuming that 20 people all speak at 60 dB, what is the total sound intensity? What temperature change from 0oC would increase the speed of sound by 1.0%?
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