a plane electromagnetic sinusoidal wave propagating in the x direction. Suppose the wavelength is 48.0 m and the electric field vibrates in the xy plane with an amplitude of 20.0 V/m.
(a) Calculate the frequency of the wave.__________ MHz
(b) Calculate the magnetic field B when the electric field has its maximum value in the negative y direction. magnitude __________nT
(c) Write an expression for B with the correct unit vector, with numerical values for Bmax, k, and ω, and with its magnitude in the form
B = Bmax cos (kx − ωt).(Assume B is measured in nT, x is measured in m and t in s.)
B = -_____cos[______x-(_____*10^7)t] nT
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