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 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?
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...
II Review | Constants Public Radio station KXPR-FM in Sacramento broadcasts at 88.9 MHz. The radio waves pass between two tall skyscrapers that are 15.0 in apart along their closest walls. Correct Term 3: Correct answer is shown. Your answer 42.5° was either rounded differently figures than required for this part. used a different number of significant Term 4: Correct answer is shown. Your answer 64.2" was either rounded differently or used a different number of significant figures than required...
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 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.
The FM radio station KAMB broadcasts from an antenna atop a 170 meter tall radio tower at a frequency of 90 MHz with a total radiated power of 40 kilowatts. Neighbors have complained about problems they attribute to excessive radiation from the tower, but the city engineer who measured the radiation level near the base of the tower found it to be well below the accepted standard. You have been hired by the HOA to assess the engineer's report. You...
The answer isn't 2.08 or 2.58 1 Review I Constants 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. 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. 8 =...
In an experiment to demonstrate interference, you connect two antennas to a single radio receiver. When the two antennas are adjacent to each other, the received signal is strong. You leave one antenna in place and move the other one directly away from the radio transmission tower. Part A How far should the second antenna be moved in order to receive a minimum signal from a station that broadcasts at 92.9 MHz? Express your answer to three significant figures and...
Problem 12.36 A small omnidirectional stereo speaker produces waves in all directions that have an intensity of 8.00 W/m? at a distance of 2.50 m from the speaker. Part A At what rate does this speaker produce energy? Express your answer in watts. P= Submit Request Answer • Part B What is the intensity of this sound 8.00 m trom the speaker? Express your answer in watts per meters squared. I- W/m? Reguest Answer Submit P Pearson <Homework-chapter 12 Problem...
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,...