Frequency and Period

One hertz is equal to _.

• frequency

• one cycle per second

• one cycle per minute

A string vibrates at a frequency of 20 Hz. What is its period?

Tags

NGSS.HS-PS4-1

A speaker vibrates at a frequency of 200 Hz. What is its period?

A swing has a period of 10 seconds. What is its frequency?

A pendulum has a period of 0.3 second. What is its frequency?

You want to describe the harmonic motion of a swing. You find out that it takes 2 seconds for the swing to complete one cycle. What is the swing’s period and frequency?

An oscillator makes four vibrations in one second. What is its period and frequency?

A pendulum takes 0.5 second to complete one cycle. What is the pendulum’s period and frequency?

A pendulum takes 10 seconds to swing through 2 complete cycles. How long does it take to complete one cycle? What is its period? What is its frequency?

• 5 seconds, 5 seconds, 0.2 Hz

• 10 seconds, 10 seconds, 0.1 Hz

• 2 seconds, 2 seconds, 0.5 Hz

• 1 second, 1 second, 1 Hz

An oscillator makes 360 vibrations in 3 minutes. How many vibrations does it make in one minute? How many vibrations does it make in one second? What is its period in seconds? What is its frequency in hertz?

• 120 vibrations, 2 vibrations, 0.5 seconds, 2 Hz

• 180 vibrations, 3 vibrations, 0.33 seconds, 3 Hz

• 60 vibrations, 1 vibration, 1 second, 1 Hz

• 90 vibrations, 1.5 vibrations, 0.67 seconds, 1.5 Hz

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2