Physics, 23.08.2019 14:00 townselt6855
Astationary motion detector sends out a sound wave of frequency f = 3.3-hz towards an approaching car. the wave is reflected off the car and the reflected wave is picked up by the motion detector. when the reflected wave is superimposed on the original wave, it is found that the sum produces a beat frequency fbeat = 0.070-hz. find the speed of the car. you may assume the speed of sound in air to be 340-ms-1
Answers: 1
Physics, 22.06.2019 05:50, ladyty2109
Astudent wears sunglasses to her read a book more easily which wave interaction occurs as light passes from the air into the plastic lenses? a polarization b. refraction c. diffraction d. interference
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Physics, 22.06.2019 14:30, Scourge927
Multiply or divide to make this english distance conversion. 174 inches = feet (14.5, 58, 2,088, 23)
Answers: 2
Astationary motion detector sends out a sound wave of frequency f = 3.3-hz towards an approaching ca...
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