Physics, 23.07.2019 19:20 mari200150
Atrain blows its whistle as it enters a 50 m long tunnel. what is the time delay heard by a person at the other end of the tunnel between the sound of the train's whistle through the rails and through the air? assume that the speed of sound in the air and steel are 342 m/s and 5960 m/s respectively. i probably know how to answer this but i just don't understand what the question is saying and what i'm supposed to do.
Answers: 1
Physics, 21.06.2019 22:30
A1200 kg car traveling north at 10 m/s is rear-ended by a 2000 kg truck traveling at 30 m/s. what is the total momentum before and after the collision?
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Physics, 22.06.2019 14:30
Which pair of quantities includes one quantity that increases as the other decreases during simple harmonic motion?
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An electron is ejected into a horizontal uniform e⃗ field at a parallel horizontal velocity of v0. assume the electron's initial position x0, initial velocity v0, time t, magnitude of electric field e, electron's mass m, and the magnitude of the electron's charge |e|. ignore the force that earth exerts on the electron. assume the e⃗ field is in the same direction as the initial velocity. part a define the equation for the electron's velocity. express your answer in terms of the variables v0, |e|, t, e, and m.
Answers: 3
Atrain blows its whistle as it enters a 50 m long tunnel. what is the time delay heard by a person a...
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