Period and Frequency
Name _________________________________
1. An FM radio station broadcasts an oscillating radio wave at a frequency of 100 MHz. What is
the period of the oscillation? (1 MHz = 106 Hz)
2. When a guitar string plays the note “A,” the string vibrates at 440 Hz. What is the period of
the vibration?
3. In the aftermath of an intense earthquake, the earth as a whole “rings” with a period of 54
minutes. What is the frequency (in Hz) of this oscillation?
4. In taking your pulse, you count 75 heartbeats in 1 min. What are the period (in s) and
frequency (in Hz) of this oscillation?
T = 0.80 s
1. T = 1.0 × 10–8 s
4. f = 1.25 Hz