How long would it take from the time you feel an earthquake forit to reach another city 92.0 km away, if it shakes you with afrequency of 10 Hz and a has a wavelength of 600 m?
2.
Two trains (on separate tracks) travel toward each other, thefirst at 60.0 km/s and the second at 40.0 km/s. Both turn on theirwhistle, the first one emitting a frequency of 200 Hz and thesecond one emitting a frequency of 220 Hz. What frequencies do theyeach receive if the speed of sound in air is 330 m/s? Hint: Draw adiagram or do this one in steps. Is the source or the observermoving?
