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## PowerPoint Slideshow about ' WAVE CALCULATIONS' - shika

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### WAVE CALCULATIONS

March 17, 2014

SOLVING FOR WAVELENGTH (λ)

- YOU ARE GIVEN:
- The number of waves and the distance (d) they occupy
- WAVELENGTH=DISTANCE/# OF WAVES

- EXAMPLE: If I have 3 waves in 60 meters, what is the wavelength?
- WAVELENGTH = Distance/ # of waves
- Wavelength = 60 meters/3 waves
- Wavelength = 20 meters

SOLVING FOR FREQUENCY (f)

- YOU ARE GIVEN:
- The # of waves
- The Time (t)
- FREQUENCY = # OF WAVES/ TIME

- EXAMPLE: If I have 3 waves traveling for 60 seconds, what is the frequency?
- FREQUENCY = 3 WAVES/60 SECONDS
- FREQUENCY = .05 HERTZ (Hz)

SOLVING FOR WAVE SPEED (V)

- If you have any combination of wave speed (v), frequency (f) or wavelength (λ)
- WAVE SPEED = FREQUENCY x WAVELENGTH
- V = f λ

- IT CAN ALSO BE REPRESENTED IN A NIFTY TRIANGLE:

V

f

λ

Example

- So, if I have a frequency of 4 Hz and length of 20 meters, what is the wave speed?
- WAVE SPEED = FREQUENCY x WAVELENGTH
- WAVE SPEED = 4 HERTZ x 20 METERS
- WAVE SPEED= 80 m/s

SOLVING FOR WAVE SPEED (V) CONTINUED:

- UNITS WILL STAY THE SAME FOR EACH CATEGORY (NO MATTER WHAT) AND ARE AS FOLLOWS:
- WAVESPEED IS m/s (meters per second)
- FREQUENCY IS Hz (Hertz)
- WAVELENGTH IS m OR cm (meters OR centimeters) based on what the problem says.

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