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Suppose that the electric field of an el...

Suppose that the electric field of an electromagnetic wave in vacuum is `E={(3.0 N //C) cos [1.8 rad//m) y +(5.4 xx 10^6 rad // s)t]}hat i`
(a) What is the direction of propagation of wave?
(b) What is the wavelength lambda ?
(c) What is the frequency `f` ?
(d) What is the amplitude of the magnetic field of the wave
(e) write an expression for the magnetic field of the wave.

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