Frequency and Period Problems
Frequency and Period Problems
Frequency and Period Problems
2. A clock clicks 88 times in 22 seconds. Calculate the frequency and period of the clock.
3. The time interval between flashes on a strobe light is 1/80th of a second. What is the frequency of these
flashes?
4. A spring vibrates 24, 000 times in 1.0 minutes. What are the frequency and period. [Hint: frequency is
cycles per second.]
1. A vibrating source with a frequency of 20.0 Hz produces water waves that have a wavelength of 3.0 cm.
Calculate the speed of the waves.
2. What is the period of a wave that travels through a spring at 2.5 m/s and has a wavelength of 1.3 meters?
3. A wave travels at 10.0 m/s. If the wavelength is .10m, what are the frequency and period of the wave?
4. It takes a water wave 5.2 seconds to travel between two docks that are 19 m apart. An observer notices
that 20. crests pass the first dock in 17 seconds. Find the wavelength of the water waves.
5. A radio station broadcasts its radio signals at 9.26 x 107 Hz. Find the wavelength if the waves travel at
3.00 x 108 m/s.
6. A sound wave produced by a clock 515 m away is heard 1.50 sec later.
a) What is the speed of sound in the air?
b) The sound wave has a frequency of 426 Hz. What is the period?
7. A hiker shouts toward a cliff .685 miles away. The returning echo is heard 4.00 s later.
a) What is the speed of sound?