The electric field of an electromagnetic wave that propagates in
a vacuum is given by: ?⃗ (?, ?) = 2 cos (α? - ω?) ? + 2 sin (α? -
ω?) ?, ?? (?/?); ???? α ? ω ??? ??????????
a) What is the amplitude E0 of the electric field, its angular
frequency, period, frequency f, wave number | ?⃗ |, wavelength, its
speed u and its phase constant φ?
b) I) Determine the electric field in the x-y plane...