What we will do today: Carry out calculations involving the relationship between speed, wavelength and frequency for waves.

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Presentation transcript:

What we will do today: Carry out calculations involving the relationship between speed, wavelength and frequency for waves.

Speed, frequency & wavelength Are all related by the following equation: Wave speed = frequency x wavelength v = f λ v (m/s) f (Hz) λ (m)

Water & Sound Wave Examples v = f λ

Example 1 v = ? f = 1700 Hz λ = 20 cm

Example 2 v = 340 m/s f = 5 kHz λ = ?

Light, Radio & TV Wave Examples (all travel at v = 3 x 108 m/s) v = f λ

Example 1 v = 3x108 m/s f = 100 MHz λ = ?

Example 2 v = 3x108 m/s λ = 6.5 x 10-7 m f = ?