Physics

We shall now meet at what gives when 2 waves interact. If cardinal jets of pee interact, they result mix and there are collisions in the midst of droplets cause a change in speed and direction. This does not happen with waves. If two waves interact, a new wave is temporarily formed, later on which the two waves carry on with exactly the same properties as before, as if nothing had happened. The waves are stop overd.

Superposition pot scarcely be applied to waves of the same kind. Light and sound waves cannot superpose; light and X-rays can. Let us look at two waves of different wavelengths crossing and superposing:

The resultant wave can be worked come out of the closet by the vector sum of the two waves. The dominion of superposition principle of waves can be used to explain the presence of beats in sound, interference effects and standing waves.

examination 1 Light and water waves are both waves. forget they superpose? Explain your answer.
ANSWER

We can use the superposition of waves to explain interference. When two waves meet, the bountifulness of the resultant wave will not only depend on the amplitude of the two waves, but also their phase relationship. Let us look at two waves of equal amplitude superposing:

In this show window the waves are in phase. The resultant wave is double the amplitude of the original waves.



This is called constructive interference or reinforcement. If the waves are 180o (p radians) out of phase, the waves cancel each other out.

This is called destructive interference or cancellation. If the phases are different to these values, the resultant amplitude are between these two extremes.

Question 2 These two waves are p radians out of phase, but have different amplitudes. Draw the produce wave you would expect.

ANSWER





Standing Waves

Sometimes waves appear to be standing still, i.e. the crests and the troughs appear to stay in the same place. We can see them in water, especially water surrounded by walls. We call them standing...If you want to get a full essay, pitch it on our website: Ordercustompaper.com



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