A bat emits an ultrasonic pulse by a frequency of 440 khz
A bat emits an ultrasonic pulse by a frequency of 44.0 kHz. It senses a moth flying by and `measures' a time delay of 7.30 ms. How far away the moth is?
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as a part of a new years celebration a boy is needed to cause a wheel adorned with sparklers to spin rapidly to
a pendulum of length 1m is released from an initial angle of 15 degrees after 1000 sec its amplitude is reduced with
a mass attached to a spring is lifted 10cm and then let go at which point the mass bobs up and down completing 4
an acoustic signal is composed of the first three harmonics of a wave of fundamental frequency 470 hz if these
a bat emits an ultrasonic pulse by a frequency of 440 khz it senses a moth flying by and measures a time delay of 730
1 how much mass of positron and electron we require to move the earth off orbit2 theoretically how much oil do we need
a customer upset by the latest trend of postal rate increases has decided to try to send letters by balloon even though
a broken spaceship is located 10 km above the center of a large circular thin sheet of unknown dust the sheet has a
a 545g block is pushed onto a spring k 485 nm at a distance of 180 cm1 when the ball is released what is its
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