1) Alexander is fishing in the inlet when a large Navy ship passes by. He notices three waves from the ship crash into the shore every five seconds. What is the frequency of the waves? O 0.2 Hz O 3.5 Hz O 0.6 Hz O 3.5 Hz 2) A high speed rail train is just went through a crossing in South Florida. Because the train is moving away, a Doppler shift will cause O the sound of the train's horn to be quieter O the sound of the train's horn to be quieter and appear to be at a lower pitch O the sound of the train's horn to appear to be at a lower pitch O the sound of the train's horn to appesto be at a higher pitch