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A 160-ft-diameter parabolic antenna is driven by a 10-W transmitter at 4.3 GHz. Calculate its effective radiated power (ERP) and its beamwidth.
If AC is a sine wave and DC is a straight line, what would the wave look like on a graph if they combine. How/what to calculate to get this new waveform.
A hot-air balloon is rising upward with a constant speed of 3.86 m/s. When the balloon is 9.27 m above the ground, the balloonist accidentally drops a compass over the side of the balloon. How much time elapses before the compass hits the ground
An infinitely long wire is placed in a space with relative permeability of 9000 carrying current of 1.9 A in the +y direction. What is the magnitude of the magnetic flux density at (0.03,0,0) [meters] in units of Tesla
Three amplifiers with power gains of 15, 22, and 7 are cascaded. The input power is 120 µW. What is the output power of the final amplifier stage
A continuous time system has an output, y, which is given by y= 4sin( 4t+ f /2). It is sampled at a frequency of 4/f Hz. Determine the expression that correctly represent the discrete signal obtained after sampling and its value for n = 1
Bode plots were introduced in my second circuit analysis class, but I really didn't think it was important because it looked like an outdated tool no longer in use.
one of a handful of planned air car models can hit 68 mph and has a range of 125 miles. it will take only few minutes to refuel at gas station equipped with costume air compressor unit. it should cost around $2 to fill the car's carbon-fiber tanks..
A lossless line having an air dielectric has a characteristic impedance of 100 Ohms. Another line that is identical in dimensions to the air line is fabricated with the air displaced by a dielectric material have an \(\epsilon_{r}\) value of 4.
Calculate the annual average of number of photons within the wavelengths (0.495 um
From your group, pick 3 mobile phones, and/or portable devices that are rechargeable. Estimate (using resources and available data), how much electricity that is used to charge them on a weekly basis
Use this table of part c to determine the mean, median, and mode of the grouped data. Compare your results with those in part A, and comment. E. use the frequency table of part C. to determine the variance and the standard deviation of the groupe..
A parallel-plate capacitor has a plate sepration of 0.025mm and ceramic dielectric with \(\epsilon r= 250. \) Determine the plate surface area in square meters if C= 10 \(\mu F\) What are the basic physical configurations of a capacitor
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