RE hw10 - 9 : Please help me answer this question: Item 9 In free space vacuum\"

Question

RE hw10 - 9 : Please help me answer this question:

Item 9 In free space vacuum"), where the net charge and current flow is zero, the speed of an EM wave is given by v EoHo f, instead, an EM wave travels in a nonconducting dielectric material with dielectric constant K.then 1/ KEo o For frequencies corresponding to the visible spectrum (near 5 x 14 Hz), the dielectric constant of water is 1.77 Part B Compare this value (as a percentage) with the speed of light in a vacuum. AEG 0.752 Submit My Answers Give Up Give Up incorrect; Try Again; 7 attempus remdining Provide Feedback Continue

Explanation / Answer

Here ,

as for k = 1.77

v = c/(sqrt(k))

v/c = 1/sqrt(1.77)

v/c = 0.752 = 75.2 %

the precentage of this value of speed of light is 75.2 %

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