Homework Answers
intensity at 4 m
I = P / area = 69 / ( 4* 3.14* 4^2)
I = 0.343 W/m^2
as we know
I = 0.5 eo C Eo^2
0.343 = 0.5* 8.85* 10^-12* 3* 10^8* Eo^2
Eo = 16.08 N/C ===>>> Ans(b)
also
Eo = c Bo
Bo = 5.36* 10^-8 T ====>>> Ans (a)
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