P and S waves from an earthquake travel at different speeds, and this difference helps locate the earthquake "epicenter" (where the disturbance took place).
a) assuming typical speeds of 8.5 km/s and 5.5 km/s for P and S waves respectively, how far away did the earthquake occur if a particular seismic station detects the arrival of these two types of waves 1.7 min apart?
b) Is one seismic station sufficient to determine the position of the epicenter? Explain.
