HW 10 : 9 : Please help me answer this question: Item 9 In free space vacuum\"),

Question

HW 10 : 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 s given by v E 0H0 f, instead, an EM wave travels in a nonconducting dielectric material with dielectric constant K, then Lo For frequencies corresponding to the visible spectrum (near 5 x 14 Hz), the dielectric constant of water is 1.77 Part A Predict the speed of light in water. Express your answer with the appropriate units Value Units Submit My Answers Give U Part B Compare this value (as a percentage) with the speed of light in a vacuum. Submit My Answers Give U Provide Feedback Continue

Explanation / Answer

Using

v = 1/sqrt(K Eo uo)

Then

v = 2.25*10^8 m/s   [ANSWER]

**********************

As c = 2.998E8 m/s,

v/c = 0.752   [ANSWER]

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