The doppler effect using ultrasonic waves of frequency 2.23×106 hz is used to monitor the heartbeat of a fetus. a (maximum) beat frequency of 258 hz is observed. part a assuming that the speed of sound in tissue is 1.54×103m/s, calculate the maximum velocity of the surface of the beating heart.
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Physics, 22.06.2019 10:30, laura52677
Agroup of students were investigating the force of gravity. they began by dropping a foam ball from a height of 3 meters into a bucket of sand. the ball hit the sand in 0.306 seconds. they dropped additional balls of approximately the same diameter, but of different masses. here is the data they collected. based on this experiment and the collected data, what would their conclusion be?
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Physics, 22.06.2019 20:30, Taylor129
Which statement best describes the direction of the buoyant force on any object? a. opposite the force of gravity b. in the same direction as the weight c. in the direction of motion of the object d. opposite the direction of motion of the object
Answers: 1
The doppler effect using ultrasonic waves of frequency 2.23×106 hz is used to monitor the heartbeat...
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