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 newtonâs 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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Physics, 21.06.2019 19:30
Molten iron fills a mould, which has a volume of 200 cm cubed. calculate the volume when the iron cools and solidifies. molten iron has a density of 7.0g/cm cubed. in its solid state, iron has a density of 8.0g/cm cubed.
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Physics, 22.06.2019 11:30
Two 1.20-m nonconducting wires meet at a right angle. one segment carries + 2.50 Âľc of charge distributed uniformly along its length, and the other carries - 2.50 Âľc distributed uniformly along it, as shown in fig. 21.50. ( a. find the magnitude and direction of the electric field these wires produce at point p, which is 60.0 cm from each wire. ( b. if an electron is released at p, what are the magnitude and direction of the net force that these wires exert on it?
Answers: 3
Physics, 22.06.2019 21:00
The first law of thermodynamics states that heat added to a system is neither created nor destroyed but is as it changes into other forms of energy.
Answers: 1
Cp global positioning system (gps). the gps network consists of 24 satellites, each of which makes t...
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