K Kayla New member Mar 25, 2010 #1 ...with a frequency of 400 Hz (yes? speed of sound 340m/s ...she has perfect pitch and can tell)What is the frequency you hear as you approach the crossing with a speed of 15 m/s (about 34 mph)?
...with a frequency of 400 Hz (yes? speed of sound 340m/s ...she has perfect pitch and can tell)What is the frequency you hear as you approach the crossing with a speed of 15 m/s (about 34 mph)?
