A sinusoidal electromagnetic wave propagates in the +x direction through empty space. Its electric field is described by E = (9.71E4 V/m) × sin ((2.06E11 rad/s) t – (687 rad/m) x ) . What is the average intensity of this electromagnetic wave (in W/m2)?
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A sinusoidal
E = (9.71E4 V/m) × sin ((2.06E11 rad/s) t – (687 rad/m) x ) .
What is the average intensity of this electromagnetic wave (in W/m2)?
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- (a) The distance to a star is approximately 4.94 ✕ 1018 m. If this star were to burn out today, in how many years would we see it disappear? years(b) How long does it take sunlight to reach Earth? minutes(c) How long does it take for a microwave radar signal to travel from Earth to the Moon and back? (The distance from Earth to the Moon is 3.84 ✕ 105 km.) sAn electromagnetic wave is traveling in a vacuum. The magnetic field is given by: B(z.t)=(1.00x10^-8 T) cos (kz-6.30x10^-8 t) i a) Find the frequency of the wave. b) Find the wavelength c) What is the direction of propagation of this wave? d) What is the wave number of the wave (k)? e) Find the electric field vector E(z,t)A regular sinusoidal plane wave, for which the following expression is given for the electric field intensity Ei(x,z)=ay10e-j(6z+8z) (V/m) The perfect conductor at z=0 hits the plane. a) Find the frequency and wavelength of the wave. b) Write the instantaneous expressions Ei(x,z;t) and Hi(x,z;t). c) Determine the angle of incidence. d)Find Er(x,z) and Hr(x,z) for the reflected wave.
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