Physics, 29.06.2019 18:00 glyptictriton9575
Cp global positioning system (gps). the gps network consists of 24 satellites, each of which makes two orbits around the earth per day. each satellite transmits a 50.0-w (or even less) sinusoidal electromagnetic signal at two frequencies, one of which is 1575.42 mhz. assume that a satellite transmits half of its power at each frequency and that the waves travel uni- formly in a downward hemisphere. (a) what average intensity does a gps receiver on the ground, directly below the satellite, receive? (hint: first use newton’s laws to find the altitude of the satellite.) (b) what are the amplitudes of the electric and magnetic fields at the gps receiver in part (a), and how long does it take the signal to reach the receiver? (c) if the receiver is a square panel 1.50 cm on a side that absorbs all of the beam, what average pres- sure does the signal exert on it? (d) what wavelength must the receiver be tuned to?
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Cp global positioning system (gps). the gps network consists of 24 satellites, each of which makes t...
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