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Date: 28-12-2016
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Date: 30-11-2020
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Date: 1-1-2017
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Speed of a Travelling Wave
A handy formula for wave speed is easy to get! In one complete cycle the wave travels a distance x = λ and takes a time t = T to do it. Thus the wave speed must be
Simple algebra also gives
Example What is the amplitude, wavelength, frequency and speed of the wave described by
with all quantities in SI units (i.e. 5 m, 3 m-1 and 2 sec-1).
Solution The general wave is
Thus the amplitude is
the wave number is
and angular frequency is
Now giving
and giving
and the speed is
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دراسة يابانية لتقليل مخاطر أمراض المواليد منخفضي الوزن
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اكتشاف أكبر مرجان في العالم قبالة سواحل جزر سليمان
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اتحاد كليات الطب الملكية البريطانية يشيد بالمستوى العلمي لطلبة جامعة العميد وبيئتها التعليمية
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