d Homework 7.pdf (207 KB) where 1.257 x 10-6 N/A2 is known as the magnetic const

Question

d Homework 7.pdf (207 KB) where 1.257 x 10-6 N/A2 is known as the magnetic constant. If 5 m/s, what is the ratio of the mngnetic force to the electric force Express your answer as a number. (e) At what speed e would the charges need to travel such that the attractive force perfectly balances the repulsive force? Express your answer (d) In part (e), you should have found a quantity that only depends on physical constants. Express your answer from part (c) as a number in meters per second. Does this look familar? Problem 3: We saw in lecture that light waves can be polarized. Can sound waves be polar- lzed? If so, give an example of polarized sound. If not, explain why not. Problem 4: Helium-neon Insers emit light with a wavelength of 633 nm (6.33 x 107 m). (a) Is this light visible? If so, what color is it? (b) What is the frequency of this light? (c) What is the energy of one photon from this laser? (d) Suppose the power output of a helium-neon laser is 0.005 W. How many photons per second are emitted? Next a Previous

Explanation / Answer

Polarization: THe wave vibrations occur only in one plane

Unpolarized: The wave vibration can occur in all the direction.

Sound waves are longitudenal waves, they propagate in the form of compression and rarefraction. That means wave propagation and vibration are in the same plane. So the concept of polarization is useless in the sound wave case

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