subject
Physics, 27.11.2019 05:31 cdvazquez727

Asatellite in geostationary orbit is used to transmit data via electromagnetic radiation. the satellite is at a height of 35,000 km above the surface of the earth, and we assume it has an isotropic power output of 1 kw (although, in practice, satellite antennas transmit signals that are less powerful but more directional).imagine that the satellite described in the problem introduction is used to transmit television signals. you have a satellite tv reciever consisting of a circular dish of radius r which focuses the electromagnetic energy incident from the satellite onto a receiver which has a surface area of 5 cm2.how large does the radius r of the dish have to be to achieve an electric field vector amplitude of 0.1 mv/mat the receiver? for simplicity, assume that your house is located directly beneath the satellite (i. e. the situation you calculated in the first part), that the dish reflects all of the incident signal onto the receiver, and that there are no losses associated with the reception process. the dish has a curvature, but the radius r refers to the projection of the dish into the plane perpendicular to the direction of the incoming signal.

ansver
Answers: 1

Other questions on the subject: Physics

image
Physics, 22.06.2019 09:50, Obememe
Gordon is going for a run through the park, but it is cold outside. the low outside temperature could affect his personal safety.
Answers: 1
image
Physics, 22.06.2019 13:10, kelonmazon2492
The bar of prob. 5/82 is repeated here. the ends of the 0.4-m bar remain in contact with their re- spective support surfaces. end b has a velocity of 0.5 m/s and an acceleration of 0.3 m/s2 in the di- rections shown. determine the angular accelera- tion of the bar and the acceleration of end a.
Answers: 3
image
Physics, 22.06.2019 18:30, raywalker3410
Adisk with a radius of r is oriented with its normal unit vector at an angle q with respect to a uniform electric field. which of the following would result in an increase in the electric flux through the disk? check all that apply? a. increasing the area of the disk b. decreasing the given orientation angle of the disk c. decreasing the strength of the electric field d. increasing the given orientation angle of the disk, but not exceeding an angle of 90
Answers: 1
image
Physics, 22.06.2019 23:50, dani6651
What is part of a line has one endpoint and continues in one direction?
Answers: 1
You know the right answer?
Asatellite in geostationary orbit is used to transmit data via electromagnetic radiation. the satell...

Questions in other subjects:

Konu
Mathematics, 13.01.2021 02:30
Konu
Mathematics, 13.01.2021 02:30
Konu
English, 13.01.2021 02:30
Konu
Mathematics, 13.01.2021 02:30