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A geostationary satellite broadcasts direct TV program at the frequency 12 GHz. The onboard antenna has EIRP=60dB. Estimate aproximate area of effective aperture of the consumer receiving ground dish antenna without taking into account additional losses such as polarization loss, atmospheric absorptions.Take the distance from earth to satellite to equal 36,000 km.
Supposed that the terminals are labeled a,b. V(ab) = -15 V, how much energy is exchanged when a positive charge of a 4 C moves through the device from a to b. Is the energy delivered or taken from the device.
when operating in the step down mode and feeding a load impedance of 8
Let c(x) = 1 - x2/2! + x4/4! and s(x) = x - x3/3! + x5/5! be approximations to cos(x) and sin(x) respectively. What are the relative and absolute errors in using these formulas for x = -2, -1, 0, 1, 2 degrees
two charges of equal magnitude 5x10-9 but opposite charge are separated by a distance of 10 meters. Determine the net force on a positive charge q =2x10-9, that is midway between the two charges.
Working with wired rifle microphones and radio microphones, The theatre's concerns when changing of wired rifle microphones to a radio microphone system are
consider a system with a 0.1mw transmit power unit gain for the transmit and receive antennas operating at 50 mhz carrier frequency with a 100khz bandwidth.the system operates in a suburban environment.
Calculate the unit step response of the DT systems with the following impulse responses: a-) h[k]= u[k+6]- u[k-10] b-) h[k]= 3^k- u[-k]
Let X be the maximum of the number of heads obtained when carlos and joe each flip a fair coin twice. Show the mapping from S to Sx, the range of X find the probabilies for the various values of X
A processor has a 32 MB cache and a 64 bit data bus. What is the minimum width of the address bus needed to access the entire cache
A parallel plate capacitor of width w, Length l, and separation d has a solid dielectric slab of permittivity ε in the space between the plates. The capacitor is charged to a voltage Vo by a battery. Assuming that the dielectric slab is withdrawn ..
A 2.67-F and a 4.20-F capacitor are connected in series across a 25.0-V battery. A 8.24-F capacitor is then connected in parallel across the 2.67-F capacitor. Determine the voltage across the 8.24-F capacitor.
Consider a uniform electric field of 50 N/C directed toward the east. If the voltage measured relative to ground at a given point is 80 V, what is the voltage at a point 1.0 m directly west of that point
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