Characteristics of Waves

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Presentation transcript:

Characteristics of Waves

Period Frequency Frequency-period Wave Speed

Period The time required for one full wavelength of a wave to pass a certain point. Represented as T and expressed in seconds.

Frequency The number of wavelengths that pass a point in a given time interval. Represented as f and expressed in Hertz (Hz)

Frequency to period The more vibrations in a second, the less time each takes therefore:

Wave Speed The speed of a wave is equal to wavelength divided by period or to frequency multiplied by wavelength

SPEED OF LIGHT 299 792 458 m/s SPEED OF SOUND 340.29 m/s

A tuning fork has a frequency of 280 Hz, and the wavelength of sound produced is 1.5 meters. What is the velocity of the wave? 𝑣=𝑓𝜆 𝑣=280 𝐻𝑧 𝑥 1.5 𝑚 420 m/s

2.0 m 𝑣=𝑓𝜆 (5.0 m/s) =(2.5 𝐻𝑧) 𝜆 𝜆 = 5.0𝑚/𝑠 2.5𝐻𝑧 A wave is moving toward shore with a velocity of 5.0 m/s. If its frequency is 2.5 Hz, what is its wavelength? 𝑣=𝑓𝜆 (5.0 m/s) =(2.5 𝐻𝑧) 𝜆 𝜆 = 5.0𝑚/𝑠 2.5𝐻𝑧 2.0 m