Physics - 2/23/21

True or False: The time for a complete back-and-forth swing of a pendulum is its frequency.

• True

• False

The number of cycles that are completed per second is called the ________ and is measured in _________.

• frequency, Hertz

• wavelength, meters

• amplitude, meters

• period, seconds

The period of a pendulum is 10 s. What is its frequency?

• 10 Hz

• 1 Hz

• 0.5 Hz

• 0.1 Hz

Frieda the fly flaps her wings back and forth 100 times each second.  The period of her wings flapping is:

• 100 s
• 0.01 s
• 0.01 Hz
• 100 Hz

A boy notices that 45 complete waves travel past him in ninety seconds.  What is the frequency of these water waves?

• 100 m
• 1 Hz
• 0.5 Hz
• 1m/s