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# WAVE CALCULATIONS - PowerPoint PPT Presentation

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

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### WAVE CALCULATIONS

March 17, 2014

• 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

• 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)

• 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

• 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

• 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.