An engineer at the company you are working for hat Jut I reported finding an unu
ID: 1504178 • Letter: A
Question
An engineer at the company you are working for hat Jut I reported finding an unusual electromagnetic wave. This wave consists only of an electric field, with no magnetic field accompanying It. You are certain that the engineer b mistaken because an electromagnetic wave must have a magnetic field that changes with time to produce its electric field. electromagnetic waves always contain Huh electric charges and magnetic poles, and magnetic poles arc accompanied by magnetic fields. electromagnetic waves con tarn moving electric charges and charges produce magnetic fields when they move. while waves consisting only of electric fields arc common and travels indefinitely through space, they are known as "electric waves." not "electromagnetic waves." When a beam of charged panicles that is flowing through space enters a stationary magnetic field, the beam's speed decreases. Increases. does not change. increases or decreases, depending on the direction of the magnetic field. When two waves arrive at a point in phase, you get dispersion. reflection. refraction. constructive interference. Which answer has these colors in order from the shortest wavelength to the longest? Red Green Blue Red Blue Green Blue Red Green Blue Green Red Laser light is polarized. coherent. incoherent. Incandescent.Explanation / Answer
(1) An engineer at the company you're working for has just reported finding an unusual electromagnetic wave. This wave consists only of an electric field, with no magnetic field accompanying it. You are certain that the engineer is mistaken because -
(A) an electromagnetic wave must have a magnetic field that changes with time to produce its electric field
(2) When a beam of light particles that is flowing through space enters a stationary magnetic field, the beam's speed
(C) doesn't change
(3) When two waves arrive at a point in phase, you get _______________.
(D) Constructive interference
(4) Which answer has these colors in order from the shortest wavelength to the longest?
(D) Blue < Green < Red
(5) Laser light is _____________.
(B) coherent.
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