Frequency and Wavelength

A pendulum swings 15 times in 12 seconds. What is the frequency of the pendulum's swings?

• 1.25 Hz

• 1.5 Hz

• 0.8 Hz

• 1 Hz

A hummingbird flaps its wings 80 times in 10 seconds. What is the frequency of the wing flaps?

• 8 Hz

• 10 Hz

• 12 Hz

• 6 Hz

Tags

NGSS.MS-PS4-1

A car engine produces a sound at a frequency of 125 Hz. If the speed of sound in air is 343 m/s, what is the wavelength of the sound?

Tags

NGSS.MS-PS4-1

A swimmer completes 4 strokes in 2 seconds. What is the frequency of the strokes?

• 1 Hz

• 2 Hz

• 0.5 Hz

• 4 Hz

Tags

NGSS.MS-PS4-1

NGSS.MS-PS4-2

A metronome ticks 90 times in 60 seconds. What is the frequency of the metronome's ticking?

• 2 Hz

• 1 Hz

• 1.5 Hz

• 0.75 Hz

What is the frequency of this wave?

• 1

• 2

• 4

• 0

Tags

NGSS.MS-PS4-1

What is the frequency of this wave? (Pay attention to axises!)

• 1.5

• 3

• 1

• 2000

Tags

NGSS.MS-PS4-1

What is the frequency of this wave?

• 3

• 6

• 1

• None of them9

Tags

NGSS.HS-PS4-1

Wavelength is represented by which letter?

• W

• Z

• X

• Y

Tags

NGSS.MS-PS4-1

What is the wavelength of this wave?

• 1

• 2

• 4

• 0

Tags

NGSS.MS-PS4-1