Bicycle Info

A turning fork with a frequency of 205 Hz is played at the same time a tuning fork with a frequency of 200 Hz is played, what is the beat frequency that is heard?

A. 0.95 Hz

B.1.05 Hz

C. 5 Hz

D. 405 Hz

A weight on the end of a spring bobs up down one complete cycle every 2 s. Its period is __________s.

a. 0.

b. 0.5

c. 1

d. 2.

In which case will the Doppler Effect cause a listener to hear a high frequency?

a. A listener stands on a street corner and listens to a car engine moving away from her.

b. A listener is driving away from a stationary factory whistle as it blows.

c. A listener on a bicycle is moving toward a stationary burglar alarm bell as it is ringing.

d. A listener stands on a street corner listening to a policeman standing in the intersection blowing a whistle.