1. Doppler effect. A police car approaches you. According to the siren's manufacturer, the frequency is 1000 Hz. How would the frequency change if you were located:
a. behind the car as it passed you
b. in front of the car as it approached you
c. in the car
d. running toward the car, if it were at rest
e. running away from the car, if it were at rest
2. What does the red shift of distant galaxies suggest?
3. What do red shift and blue shift mean?
4. Explain the Doppler effect.
5. Consider a 320 Hz note (E, approximately). What is the frequency of:
a. the next E (one octave above)
b. the E one octave below
c. an E that is 3 octaves above
d. an F, one semi-tone above
e. a G, three semi-tones above
Don't forget to review strings, organ pipes and all other wave phenomena.
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