A radio station transmits isotropically (i.e. in all directions) electromagnetic radiation at the frequency of 98.2...
A radio station transmits isotropically (i.e. in all directions) electromagnetic radiation at the frequency of 98.2 MHz. At a certain distance from the radial station the wave intensity is I = 0.295 W / m ^ 2.
a) What will be the intensity of the wave three times the distance of the radial station?
b) What is the wavelength of the transmitted signal.
c) If the antenna power is 6 MW. At what distance from the source will the wave intensity be 0.148 W / m ^ 2?
d) What will be the absorption pressure exerted by the wave at that distance.
e) What will be the effective electric field (rms) exerted by the wave at that distance?Homework Answers
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A radio station transmits isotropically (i.e. in all directions) electromagnetic radiation at the frequency of 98.2...
2) KERA radio transmits at a frequency of 90.1 MHz. The station broadcasts its signal with...
2) KERA radio transmits at a frequency of 90.1 MHz. The station broadcasts its signal with a power of 100 MW a) What is the wavelength of this radio station's radio signal? b) Assume that KERA broadcasts omnidirectionally (it doesn't, really). Knowing this, what is the intensity of the radio signal for KERA received by a radio a distance of 34.2 kilometers from the broadcast tower? What is the strength of the electric and magnetic fields of the radio signal...
Assume a 55 kW radio station emits Electromagnetic waves uniformly in all directions. How much energy...
Assume a 55 kW radio station emits Electromagnetic waves uniformly in all directions. How much energy per second crosses a 4.0 m^2 area 50 m from the transmitting antenna? __7____ W What is the rms magnitude of the E field at this point, assuming the station is operating at full power? _______ What is the voltage induced in a 1.0 m long vertical car antenna at this distance?
FM radio station KRTH in Los Angeles broadcasts on an assigned frequency of 101 MHz with...
FM radio station KRTH in Los Angeles broadcasts on an assigned frequency of 101 MHz with a power of 50,000 W. (a) What is the wavelength of the radio waves produced by this station? (b) Estimate the average intensity of the wave at a distance of 35.3 km from the radio transmitting antenna. Assume for the purpose of this estimate that the antenna radiates equally in all directions, so that the intensity is constant over a hemisphere centered on the...
An AM radio station broadcasts isotropically (equally in all directions) with an average power of 3.60 kW. A dipole rece...
An AM radio station broadcasts isotropically (equally in all directions) with an average power of 3.60 kW. A dipole receiving antenna 70.0 cm long is at a location 4.00 miles from the transmitter. Compute the amplitude of the emf that is induced by this signal between the ends of the receiving antenna.
A radio antenna broadcasts a 1.0 MHz radio wave with 25 kW power. Assume the radiation...
A radio antenna broadcasts a 1.0 MHz radio wave with 25 kW power. Assume the radiation is emitted uniformly in all directions. 1) what is the wave's intensity 30 km from the antenna 2) what is the electric field amplitude at this distance?
8. A radio station broadcasts at a frequency of 88.1 MHz. At a receiver some distance...
8. A radio station broadcasts at a frequency of 88.1 MHz. At a receiver some distance from the antenna, the maximum electric field of the electromagnetic wave detected is 6 x 10–3V/m. (a) What is the maximum magnetic field? (b) If Ē is in the y-direction and the wave propagtes in the x-direction, what is the direction of the B-field at that moment? (c) What is the wavelength of the electromagnetic wave?
A radio antenna broadcasts a 1.0 MHz radio wave with 27 kW of power. Assume that...
A radio antenna broadcasts a 1.0 MHz radio wave with 27 kW of power. Assume that the radiation is omitted uniformly in all directions. (60 - 8.85 x 10-12 c/Nm)c- 3.00 x 10 m/s) Part A What is the wave's intensity 33 km from the antenna? Express your answer in watts per meter squared. 190 AED ? I- W/m Submit Request Answer Part B What is the electric field amplitude at this distance? Express your answer in volts per meter....
Public Radio station KXPR-FM in Sacramento broadcasts at 88.9 MHz. The radio waves pass between two...
Public Radio station KXPR-FM in Sacramento broadcasts at 88.9 MHz. The radio waves pass between two tall skyscrapers that are 15.0 m apart along their closest walls. Review Constants At what horizontal angles, relative to the original direction of the waves, will a distant antenna not receive any signal from this station? Enter your answers in ascending order separated by commas. Enter only positive angles. Express your answers in dergees. A = 13.0,26.7,42.4,64.1 Submit Previous Answers Correct Part B If...
5. (a) A radio station broadcasts at a frequency of 91.5 MHz (1 MHz = 106...
5. (a) A radio station broadcasts at a frequency of 91.5 MHz (1 MHz = 106 Hz). At a receiver some distance from the antenna, the maximum magnetic field of the electromagnetic wave detected is 2.10 x 10-11 T. (i) (2 pts) What is the maximum electric field of the electromagnetic wave at this receiver? (ii) (1 pt) What is the wavelength of the electromagnetic wave? (b) Sunlight strikes a piece of crown glass at an angle of incidence of...
5. (a) A radio station broadcasts at a frequency of 91.5 MHz (1 MHz = 10...
5. (a) A radio station broadcasts at a frequency of 91.5 MHz (1 MHz = 10 Hz). At a receiver some distance from the antenna, the maximum magnetic field of the electromagnetic wave detected is 2.10 x 10-11 T. ) (2 pts) What is the maximum electric field of the electromagnetic wave at this receiver? (ii) (1 pt) What is the wavelength of the electromagnetic wave? (b) Sunlight strikes a piece of crown glass at an angle of incidence of...
2) KERA radio transmits at a frequency of 90.1 MHz. The station broadcasts its signal with a power of 100 MW a) What is the wavelength of this radio station's radio signal? b) Assume that KERA broadcasts omnidirectionally (it doesn't, really). Knowing this, what is the intensity of the radio signal for KERA received by a radio a distance of 34.2 kilometers from the broadcast tower? What is the strength of the electric and magnetic fields of the radio signal...
Assume a 55 kW radio station emits Electromagnetic waves uniformly in all directions. How much energy per second crosses a 4.0 m^2 area 50 m from the transmitting antenna? __7____ W What is the rms magnitude of the E field at this point, assuming the station is operating at full power? _______ What is the voltage induced in a 1.0 m long vertical car antenna at this distance?
8. A radio station broadcasts at a frequency of 88.1 MHz. At a receiver some distance from the antenna, the maximum electric field of the electromagnetic wave detected is 6 x 10–3V/m. (a) What is the maximum magnetic field? (b) If Ē is in the y-direction and the wave propagtes in the x-direction, what is the direction of the B-field at that moment? (c) What is the wavelength of the electromagnetic wave?
A radio antenna broadcasts a 1.0 MHz radio wave with 27 kW of power. Assume that the radiation is omitted uniformly in all directions. (60 - 8.85 x 10-12 c/Nm)c- 3.00 x 10 m/s) Part A What is the wave's intensity 33 km from the antenna? Express your answer in watts per meter squared. 190 AED ? I- W/m Submit Request Answer Part B What is the electric field amplitude at this distance? Express your answer in volts per meter....
Public Radio station KXPR-FM in Sacramento broadcasts at 88.9 MHz. The radio waves pass between two tall skyscrapers that are 15.0 m apart along their closest walls. Review Constants At what horizontal angles, relative to the original direction of the waves, will a distant antenna not receive any signal from this station? Enter your answers in ascending order separated by commas. Enter only positive angles. Express your answers in dergees. A = 13.0,26.7,42.4,64.1 Submit Previous Answers Correct Part B If...
5. (a) A radio station broadcasts at a frequency of 91.5 MHz (1 MHz = 106 Hz). At a receiver some distance from the antenna, the maximum magnetic field of the electromagnetic wave detected is 2.10 x 10-11 T. (i) (2 pts) What is the maximum electric field of the electromagnetic wave at this receiver? (ii) (1 pt) What is the wavelength of the electromagnetic wave? (b) Sunlight strikes a piece of crown glass at an angle of incidence of...
5. (a) A radio station broadcasts at a frequency of 91.5 MHz (1 MHz = 10 Hz). At a receiver some distance from the antenna, the maximum magnetic field of the electromagnetic wave detected is 2.10 x 10-11 T. ) (2 pts) What is the maximum electric field of the electromagnetic wave at this receiver? (ii) (1 pt) What is the wavelength of the electromagnetic wave? (b) Sunlight strikes a piece of crown glass at an angle of incidence of...
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