What a the magnatic feild amplitude of an electromagnetic wa

What a the magnatic feild amplitude of an electromagnetic wave whose electric fields amplitude is 130 v/m? Express your answer to two significant figures and Include the appropriate units. What a Bio intensity of mo wave? Express your answer to two significant figures and Include the appropriate units.

Solution

a)

B_max=E_max/c =130/(3*10⁸)

B_max=4.33*10^-7 T

b)

Intensity

I=(1/2)ce_oE_max²=(1/2)(3*10⁸)(8.85*10^-12)*130²

I=22.4 W/m²