Asound recording is made of a train as it blows its whistle for 10 seconds. the pitch of the sound appears to be decreasing during the 10 seconds. what conclusion, if any, could be made about the motion of the train and how do you justify this conclusion?
a) applying the doppler effect. the train is moving away from the recording device because the frequency is decreasing.
b) applying the doppler effect. the train is slowing and moving toward the recording device because the frequency is decreasing.
c) applying the doppler effect. the train is slowing but the direction cannot be determined because the frequency is decreasing.
d) applying the doppler effect. the train is moving at constant speed toward the recording device because the frequency is decreasing.
Answers: 2
Physics, 21.06.2019 23:00
Will you chech and finish these for me, because i am stumped with them.
Answers: 1
Physics, 22.06.2019 10:20
Electromagnetic induction. a coil of wire contains n turns and has an electrical resistance r. the radius of each turn is a. initially, inside the coil there exists a uniform magnetic field of magnitude b0 parallel to the axis of the coil. the magnetic field is then reduced slowly. the current induced in the coil is i. how long does it take for the magnitude of the uniform field to drop to zero?
Answers: 1
Asound recording is made of a train as it blows its whistle for 10 seconds. the pitch of the sound a...
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