Physics

Physics, 12.07.2019 19:30, laurabwhiddon

1show that the decay of power density for a wave radiated by an antenna (1/r2) results from the increase in the area of a sphere centered on the antenna and the fact that the total radiated power is conserved.

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Physics, 10.07.2019 19:20, darrieg

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Physics, 27.07.2019 02:20, masonorourke

The electric field of a uniform plane wave traveling along the negative z direction is given by e^i _w = (a_x + ja_y)e_o e^ + jkz and is incident upon a receiving antenna placed at the origin and whose radiated electric field, toward the incident wave, is given by e_w = (a_x + 2a_y)e_i e _jkr/r determine the following: polarization of the incident wave, and why? sense of rotation of the incident wave. polarization of the antenna, and why? sense of rotation of the antenna polarization. losses (dimensionless and in db) due to polarization mismatch between the incident wave and the antenna

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Physics, 10.09.2019 19:30, jessicad8776

Public television station kqed in san francisco broadcasts a sinusoidal radio signal at a power of 316 kw. assume that the wave spreads out uniformly into a hemisphere above the ground.a) at a home 5.50km away from the antenna, what average pressure does this wave exert on a totally reflecting surface? answer in pa unitsb)at a home 5.50km away from the antenna, what are the amplitudes of the electric and magnetic fields of the wave? answer in n/c, tc) at a home 5.50km away from the antenna, what is the average density of the energy this wave carries? answer in j/m^3d) for the energy density in part (c), what percentage is due to the electric field? e)for the energy density in part (c), what percentage is due to the magnetic field?

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1show that the decay of power density for a wave radiated by an antenna (1/r2) results from the incr...

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