010 query 10

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course PHY 202

010. query 10 was submitted 16 Jun 2011 around 6:40 PM.

010. `query 10*********************************************

Question: Query introductory set 6, problems 1-10

Explain how we know that the velocity of a periodic wave is equal to the product of its wavelength and frequency

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Your Solution:

The velocity of a wave is equal to the product of its wavelength and frequency (number of vibrations per second) and is independent of its intensity. We know how many wavelength segments will pass every second, and we know the length of each. If we therefore multiply the two it will give the velocity the wavelengths must be passing.

confidence rating #$&*:

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Given Solution:

** we know how many wavelength segments will pass every second, and we know the length of each, so that multiplying the two gives us the velocity with which they must be passing **

Your Self-Critique: ok

Your Self-Critique Rating: 3

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Question: explain how we can reason out that the period of a periodic wave is equal to its wavelength divided by its velocity

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Your Solution:

Once we have determined how far it is between peaks (wavelength) and how fast the wavetrain is passing (velocity), we can then divide the distance between peaks by the velocity to see how much time passes between peaks at a given point.

period = wavelength / velocity

confidence rating #$&*:

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Given Solution:

** If we know how far it is between peaks (wavelength) and how fast the wavetrain is passing (velocity) we can divide the distance between peaks by the velocity to see how much time passes between peaks at a given point. That is, period is wavelength / velocity. **

Your Self-Critique: ok

Your Self-Critique Rating: 3

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