Solving for t' by substitution I obtained t' = 7/8. Then I substituted x= 10 and t = 7/8 in the given equation. Is that the right way to do it? My answer key says the answer is 100 but I am getting 78.5.
So when the source is not vibrating, it is not setting waves due to vibration? But it is moving so it is still causing disturbance in the medium .... And I happened to read that if the source is moving faster than the speed of sound, a shock wave is set up. How ?