Physics
19.09.2020 03:20
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If a wave has a wavelength of 4.5 meters and a period of 0.007 second, what’s the

If a wave has a wavelength of 4.5 meters and a period of 0.007 second, what’s the velocity of the wave?
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Chris3529
Chris3529
4,5(68 marks)

v = fλ

v = velocity, f = frequency, λ = wavelength

f = 1/T

f = frequency, T = period

v = fλ = λ/T

Given values:

λ = 4.5m, T = 0.007s

v = 4.5/0.007

v = 643m/s

Round to 2 significant figures:

v = 640m/s

pravikumar02
pravikumar02
4,6(76 marks)

v = I ⁄ T  

v= 4.5  ⁄ 0.007  

v = 642.9 m/s

Explanation:

heroxtree
heroxtree
4,8(64 marks)

Options B and C: Star B is moving toward Earth. AND Star B is moving toward Earth.

Explanation:

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