Wave Speed

A wave has a frequency of 4 hz and a wave length of 3 m. What is the wave speed (velocity)?

• 25 m/s

• 1 m/s

• 7 m/s

• 12 m/s

Tags

NGSS.MS-PS4-2

What is the speed of a wave with a frequency of 20Hz and a wavelength of 0.4m ?

• 100m/s

• 25m/s

• 8m/s

Tags

NGSS.MS-PS4-2

If the velocity of the wave is 10 m/s and the frequency is 5 Hz, then what is the wavelength?

• 2 m

• 50 m

• 5 m 

• 15 m

If a wave is traveling at 60m/s and has a wavelength of 3m. What is the frequency?

• 10Hz

• 20Hz

• 180Hz

A wave has frequency of 50 Hz and a wavelength of 10 m. What is the speed (m/s) of the wave?

(a)  

Tags

NGSS.HS-PS4-1

Which equation can be used to calculate the speed of a wave?

• v = fλ

• f = v/λ

• λ = v/f

• v = λ/f

Tags

112.45.c.8.B

A sound wave travels at a speed of 352 m/s. What is its wavelength (m) if it has a frequency of 880 Hz?

(a)  

Answer explanation

Wavelength = Speed / Frequency = 352 m/s / 880 Hz = 0.4 m (2 sig figs)

Tags

112.45.c.8.B

112.45.c.8.C

What is the speed of light in a vacuum if its frequency is 5.0 × 10^14 Hz and its wavelength is 600 nm?​ ​ (a)  

• 3.0 × 10^8 m/s

• 8.3 × 10^8 m/s

• 1.2 × 10^8 m/s

Answer explanation

Speed of light = Frequency × Wavelength = 5.0 × 10^14 Hz × 6.0 × 10^-7 m = 3.0 × 10^8 m/s (2 sig figs)

Tags

112.45.c.8.B

A guitar string vibrates at a frequency of 100 Hz. What is the wavelength (m) of the sound wave if the speed of sound is 150 m/s?

(a)  

Answer explanation

Wavelength = Speed / Frequency = 150 m/s / 100 Hz = 1.5 m (2 sig figs)

Tags

112.45.c.8.B

What is the speed (m/s) of a 20 Hz with a 4m wavelength?

(a)  

Tags

NGSS.MS-PS4-1