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15. Wave Motion and Waves on a String
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Q1 of 97 Page 321

You are walking along a seashore and a mild wind is blowing. Is the motion of air a wave motion?


A wave is a disturbance (change from equilibrium) of one or more fields such that the field values oscillate repeatedly about a stable equilibrium value.


The motion of air is not a wave


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2

The radio and TV programmes, telecast at the studio, reach our antenna by wave motion. Is it a mechanical wave or non-mechanical?

3

A wave is represented by an equation . In which direction is the wave going? Assume that c1, c2 and c3 are all positive.

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Show that the particle speed can never be equal to the wave speed in a sine wave if the amplitude is less than wavelength divided by 2π.

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15. Wave Motion and Waves on a String
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