Respuesta :
Answer:
The the amplitude of the magnetic field of this wave is [tex]2.4\times10^{5}\ N/C[/tex]
Explanation:
Given that,
Intensity [tex]S= 80 Mw/m^2[/tex]
We need to calculate the amplitude of the magnetic field
Using formula of intensity
[tex]S=\dfrac{E_{m}^2}{2c\mu_{0}}[/tex]
Where, [tex]E_{m}[/tex]=Amplitude of an electromagnetic wave
c = speed of light
Put the value into the formula
[tex]E_{m}^2=80\times10^{6}\times2\times3\times10^{8}\times4\pi\times10^{-7}[/tex]
[tex]E_{m}=245598.40\ N/C[/tex]
[tex]E_{m}=2.4\times10^{5}\ N/C[/tex]
Hence, The the amplitude of the magnetic field of this wave is [tex]2.4\times10^{5}\ N/C[/tex]
