Physics, 12.08.2020 04:01 kimberlyblanco14
Sonar is used to determine the speed of an object. A 38.0-kHz signal is sent out, and a 40.0-kHz signal is returned. If the speed of sound is 341 m/s, how fast is the object moving?
Answers: 1
![f_r = f_s [\frac{v_s + v}{v_s - v} ]](/tpl/images/0718/1557/9777c.png)
![40 *10^{3} = 38 *10^{3} * [\frac{341 + v}{341 - v} ]](/tpl/images/0718/1557/d4f38.png)
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Sonar is used to determine the speed of an object. A 38.0-kHz signal is sent out, and a 40.0-kHz sig...
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