An airplane flying at a distance of 7.9 km from a radio transmitter receives a signal...
An airplane flying at a distance of 14 km from a radio transmitter receives a signal of intensity 14 W/m2. What is the amplitude of the (a) electric and (b) magnetic component of the signal at the airplane? (c) If the transmitter radiates uniformly over a hemisphere, what is the transmission power? (a) Number Units (b) Number Units Units (c) Number
An 800 kHz radio signal is detected at a point 3 km distant from a transmitter tower. The electric field amplitude of the signal at that point is 610 mV/m. Assume that the signal power is radiated uniformly in all directions and that radio waves incident upon the ground are completely absorbed. The intensity of the radio signal at that point is closest to: 3.5x10-4 W/m2 9.9x10-4 W/m2 O2.5x10-4 W/m2 4.9x10-4 w/m2 7.0x10-4 w/m2
4. An AM radio transmitter broadcasts 62.5 kW of power uniformly in all directions. Assuming all of the radio waves that strike the ground are completely absorbed, and that there is no absorption by the atmosphere or other objects, what is the intensity 30.5 km away? (Hint: Half the power will be spread over the area of a hemisphere.) What is the maximum electric field strength at this distance? a. b.
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An 800 kHz radio signal is detected at a point 2.1 km distant from a transmitter tower. The electric field amplitude of the signal at that point is 800 mV/m. Assume that the signal power is radiated uniformly in all directions and that radio waves incident upon the ground are completely absorbed. The intensity of the radio signal at that point is closest to: A) 8.5 times 10^-4 W/m^2 B) 6.0 times 10^-4 W/m^2...
3. A radio station sends a sinusoidal wave with average power of 50kW. Assume that the transmitter sends the signal with the same value to all direction. Calculate the wave intensity, electric field amplitude, and magnetic field that is detected by a satellite at 100 km away from the antenna.
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 units B)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,...