2) Suppose I am running on a train. (Don't worry, I am not carrying scissors.) I run at 3.30 m/s (relative to the runnin

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2 Suppose I Am Running On A Train Don T Worry I Am Not Carrying Scissors I Run At 3 30 M S Relative To The Runnin 1 (211.14 KiB) Viewed 60 times

2) Suppose I am running on a train. (Don't worry, I am not carrying scissors.) I run at 3.30 m/s (relative to the running surface) “forward” along the same direction as the train motion. The train travels at 33.0 m/s relative to the earth. Take the speed of sound in air as 330. m/s for this problem. a) Suppose, for this part, that train car I am in is a passenger car in which the air travels along with the car. At what frequency do I hear a sound of precisely 220 Hz emitted at a fixed point behind me in the car? b) Now, suppose I am running on a "flat car” on which the air is still in the "earth frame" (thus moving by at the train's speed backward in our frame). Now all speeds should be measured relative to the ground. At what frequency do I hear a sound of precisely 220 Hz emitted at a fixed point behind me in the car? Now suppose it is Superman (instead of me) running on the train. He runs at an amazing 300.m/s relative to the ground! c) Does Superman make a shock wave if he is running in the passenger car? If so, what is the direction of it with respect to the train motion? (You could express a direction as an inverse trig function if necessary.) d) Does Superman make a shock wave if he is running on the flat car? If so, what is the direction of it with respect to the train motion? (You could express a direction as an inverse trig function if necessary.)