The document discusses wave speed, frequency, and wavelength. It defines these key terms and their relationships using the equation speed = wavelength x frequency. It then provides examples of using this equation to calculate speed, wavelength, or frequency when two of the three values are known. Sample problems are worked through demonstrating how to apply the equation to different wave scenarios.

1. WAVE SPEED,
FREQUENCY AND
WAVELENGTH

2. QUANTITY
SYMBOL
QUANTITY
TERM
UNIT UNIT
SYMBOL
V Wave
speed
meters/
second
m/s
 Wavelength meter M
f frequency Hertz Hz

3. EM Waves
 3X108 m/s
It is equal to the speed of light
V= f

4.  What is the frequency of radio
waves with wavelength of 20 m?
Given: v= c = 3X108 m/s
λ= 20 m
f= ?
v=c=λf
f=c/λ = 3X108 m/s
20 m
f= 1.5 X107 Hz

5. V=  f
Sample Problem:
1. A wave has a frequency of 50 Hz and a wavelength
of 10m. What is the speed of the wave?
2. A wave has a frequency of 5Hz and a speed of 25
m/s. What is the wavelength of the wave?
3. A wave has wavelength of 10m and a speed of 340
m/s. What is the frequency of the wave?

6. Solve the ff:
1.A wave with a frequency of 14 Hz has a wavelength
of 3 m. At what speed will this wave travel?
2.The speed of a wave is 65 m/s. If the wavelength of
the wave is 0.8 m, what is the frequency of the
wave?
3.A wave has a frequency of 46 Hz and a wavelength
of 1.7 m. What is the speed of this wave?
4.A wave travelling at 230 m/s has a wavelength of
2.1m. What is the frequency of this wave?

7. 1.A wave with a frequency of 500 Hz is travelling
at a speed of 200 m/s. What is the wavelength?
2.A wave has a frequency of 540 Hz and is
travelling at 340 m/s. What is its wavelength?
3.A wave has a wavelength of 125 m is moving at a
speed of 20 m/s. What is its frequency?
4.Radio waves travel at a speed of 3000,000,000
m/s. WFNX broadcasts radio waves at a
frequency of 101, 700,000 Hertz. What is the
wavelength of WFNX’s radio waves?