Wave Speed Equation

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.HS-PS4-1

What is the frequency (Hz) of a wave traveling at 300 m/s with a 4 m wavelength?

(a)  

Tags

NGSS.HS-PS4-1

A wave has wavelength of 10.0 m and a speed of 340 m/s. What is the frequency (Hz) of the wave?

(a)  

Tags

NGSS.HS-PS4-1

 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

 A wave has frequency of 5 Hz and a speed of 25 m/s. What is the wavelength (m) of the wave?

(a)  

Tags

NGSS.HS-PS4-1

A guitar string vibrates with a frequency of 320 Hz. If the wavelength of the vibration is 0.23 meters 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