Speed of Waves. Review Wavelength CREST TROUGH REST amplitude Wavelength.

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Presentation transcript:

Speed of Waves

Review Wavelength CREST TROUGH REST amplitude Wavelength

Review – what kind of wave is it?

WAVE SPEED v = * f V = speed of the wave (m/s) = wavelength (m) f = frequency (Hz or 1/s) The speed of a wave is dependent upon several factors of the medium a. state of matter –solid, liquid, gas b. density of the medium c. temperature of the medium

WAVE SPEED v = * f V = speed of the wave (m/s) = wavelength (m) f = frequency (Hz or 1/s) 1.What kind of relationship do the wavelength and frequency have? 2.What kind of relationship do the wavelength and velocity have? 3.What kind of relationship do the velocity and frequency have?

Speed of waves –Sound waves travel faster in liquids and solids than in gas. –Light waves travel faster in gases and empty space than in liquids and solids.

Speed of Waves Equation 2 V = d/t V – velocity (m/s) D – distance (m) T – time (s) D VT

PROBLEMS 1.A wave is traveling at a speed of 12 m/s and its wavelength is 3m. Calculate the wave frequency. 2.A wave travels at a speed of 45.0 m/s and has a frequency of 22.0 Hz. What is the wavelength? 3. A wave is traveling at a speed of 100 m/s and its wavelength is 2 m. Calculate the wave frequency. 4.A wave travels at a speed of 8.0 m/s and has a frequency of 12.0 Hz. What is the wavelength? 5.What is the speed of a wave that has a wavelength of 7 m and a frequency of 49 Hz?

Speed of Wave Equation #2 v = d/t V = speed of the wave (m/s) d=distance (m) t=time (s) What is the speed of a wave that traveled 20m in 0.5s? V=d/t