Name: _________________________

Section:_____

Date:__________

Wave Speed Equation Practice Problems

The formula we are going to practice today is the wave speed equation:

wave speed = wavelength* frequency

v f

Variables, units, and symbols:

Quantity

Symbol

v

f

Quantity

Term

wave speed

wavelength

frequency

Unit

meters/second

meter

Hertz

Unit

Symbol

m/s

m

Hz

Remember:

frequency: number of complete waves passing a point in a given time

number of cycles

f

t

If 10 waves pass in 1 second, the frequency is 10 Hz

If 6 waves pass in 2 seconds, the frequency is 3 Hz

Sample Problems:

Sample Problem 1) A wave has frequency of 50 Hz and a wavelength of 10 m. What is the speed

of the wave?

f 50 Hz

10 m

v?

m

v = f = 10 m 50 Hz 500

s

Sample Problem 2) A wave has frequency of 5 Hz and a speed of 25 m/s. What is the wavelength

of the wave?

f 5 Hz

m

v 25

s

=?

v 25 m s

v = f =

5m

5 Hz

f

Sample Problem 3) A wave has wavelength of 10 m and a speed of 340 m/s. What is the

frequency of the wave?

10 m

m

v 340

s

f =?

v 340 m s

v f f =

34 Hz

10 m

Problems for you to try: Complete the following practice problems. You MUST

show ALL the work outlined in the steps in the example problems.

1. A wave with a frequency of 14 Hz has a wavelength of 3 meters. At what speed will this

wave travel?

2. The speed of a wave is 65 m/sec. If the wavelength of the wave is 0.8 meters, what is the

frequency of the wave?

3. A wave has a frequency of 46 Hz and a wavelength of 1.7 meters. What is the speed of this

wave?

4. A wave traveling at 230 m/sec has a wavelength of 2.1 meters. What is the frequency of

this wave?

5. A wave with a frequency of 500 Hz is traveling at a speed of 200 m/s. What is the

wavelength?

6. A wave has a frequency of 540 Hz and is traveling at 340 m/s. What is its wavelength?

7. A wave has a wavelength of 125...

Section:_____

Date:__________

Wave Speed Equation Practice Problems

The formula we are going to practice today is the wave speed equation:

wave speed = wavelength* frequency

v f

Variables, units, and symbols:

Quantity

Symbol

v

f

Quantity

Term

wave speed

wavelength

frequency

Unit

meters/second

meter

Hertz

Unit

Symbol

m/s

m

Hz

Remember:

frequency: number of complete waves passing a point in a given time

number of cycles

f

t

If 10 waves pass in 1 second, the frequency is 10 Hz

If 6 waves pass in 2 seconds, the frequency is 3 Hz

Sample Problems:

Sample Problem 1) A wave has frequency of 50 Hz and a wavelength of 10 m. What is the speed

of the wave?

f 50 Hz

10 m

v?

m

v = f = 10 m 50 Hz 500

s

Sample Problem 2) A wave has frequency of 5 Hz and a speed of 25 m/s. What is the wavelength

of the wave?

f 5 Hz

m

v 25

s

=?

v 25 m s

v = f =

5m

5 Hz

f

Sample Problem 3) A wave has wavelength of 10 m and a speed of 340 m/s. What is the

frequency of the wave?

10 m

m

v 340

s

f =?

v 340 m s

v f f =

34 Hz

10 m

Problems for you to try: Complete the following practice problems. You MUST

show ALL the work outlined in the steps in the example problems.

1. A wave with a frequency of 14 Hz has a wavelength of 3 meters. At what speed will this

wave travel?

2. The speed of a wave is 65 m/sec. If the wavelength of the wave is 0.8 meters, what is the

frequency of the wave?

3. A wave has a frequency of 46 Hz and a wavelength of 1.7 meters. What is the speed of this

wave?

4. A wave traveling at 230 m/sec has a wavelength of 2.1 meters. What is the frequency of

this wave?

5. A wave with a frequency of 500 Hz is traveling at a speed of 200 m/s. What is the

wavelength?

6. A wave has a frequency of 540 Hz and is traveling at 340 m/s. What is its wavelength?

7. A wave has a wavelength of 125...