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A Doppler blood flow unit emits ultrasound at 5.4 MHz. What is the frequency shift of the ultrasound reflected from blood moving in an artery at a speed of 0.24 m/s?
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An observer sees an airplane flying directly overhead and determines that the distance from the wingtip to wingtip subtends and angle of 0.0080 radians. She knows that the wingspan of the airplane is actually 160 feet. W ...
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Question: In this problem, you will apply kinematic equations to a jumping flea. Take the magnitude of free-fall acceleration to be 9.80 m/s2 . Ignore air resistance. How long is the flea in the air from the time it jump ...
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