An engineer at the company you are working for has just reported finding an unus

Question

An engineer at the company you are working for has just reported finding an unusual eelctromagentic wave. This wave consists only of an electric fied, with no magnetic field accompanying it. You are certain that the engineer is mistakes because. A) an electrmagenetic wave must have a magnetic field that changes with time to produce is electric field. B) electromagnetic waves always contain both electric charges and magnetic poles are accompanined by magnetic filels. C) electormagnetic waves contain moving electric charges and charges produce magnetic fields when they move. D) While waves consisitng only of electric fields are common and travels indefinetly through space, they are known as "electric waves," not "electromagnetic waves". 2) When a beam of charged Particles that is flowing through space enters a stationary magnetic field, the beam's speed A) decreases. B) increses. C) does not change, D) increases or decreases, depending on the direction of hte magnetic field. 3) When two waves arrive at a point in phase, you get A) dispersion B) reflection. C) refraction. D) constructive interference. 4) Which answer has Ihese colors in order from the shortest wavelength to the longest? A) Red Green Blue B) Red Blue Green C) Blue Red Green D) Blue Green Red 5) I-aser light is A) polarized. B) coherent. C) incoherent. D) incandescent.

Explanation / Answer

(3) when two waves arrive at point in phase "constuctive interference"

(4)colours in order from shortest wavelength to longest wavelength "blue green red"

(5)laser light is coherent

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