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Dolphins emit clicks of sound for communication and echolocation. A marine biologist is monitoring a dolphin swimming in seawater where the speed of sound is 1520 m/s. When the dolphin is swimming directly away at 5.4 m/s, the marine biologist measures the number of clicks occuring per second to be at a frequency of 2480 Hz. What is the difference (in Hz) between this frequency and the number of clicks per second actually emitted by the dolphin?
If the capacitor in the previous problem has a plate separation of 1 mm, what is the average displacement current, to the nearest tenth of a microamp, during that time period Assume a resistance of 180006 ohms and an applied voltage of 14 volts.
Draw energy band diagrams, for k lying between 0 and pi/a (take a=5Ã), for a material whose valence band follows the equation. and calculate the effective masses for conduction and valence bands.
What is the path attenuation between transmitter and receiver at a frequency of 1.2 GHz and a distance of 11,000. Given: f = 1.2GHz d = 11,000 mi. Calculate the path attenuation; dB = 37dB + 20 log f + 20 log d = 37 + 20 log 1.2^9 + 20 log 11,000
An electric field in free space is E=(5z^2/e0)az V/m. Find the total charge contained within a cube, centered at the origin, of 4-m side length, in which all sides are parallel to coordinate axes (and therefore each side intersects an axis at +2 o..
Why is pulse shaping filtering indispensable in wireless communications applications. Give three reasons why pulse shaping filters are used and in what points of the communications link they may be deployed.
A strain gauge of 120O with a gauge factor 2 is used to measure the longitudinal strain developed in a cylindrical bar which has a diameter of 100mm and Young's Modulus of 5 x 1010Pa. A compressive force of 2 x 106N is applied to the bar.
A resistor on a Wheatstone bridge is replaced with a strain gage which has a nominal resistance of 120 Ohms and a gage factor of 2.06. The remaining resistors on this quarter-bridge Wheatstone bridge circuit are 120 Ohm fixed resistors.
what size capacitor should be placed in series with the series combination of 800 ohms and 20mH to give an admittance whose magnitude is 1m/ohm at w=10k rads/s
A 4157-V rms, 3-phase supply is applied to a balanced Y-connected three-phase load consisting of three identical impedances of 48 at angle 36.87 degrees . Taking the phase voltage Van as reference
Write a Matlab program to calculate the electric field due to a line of charge of length 1m. a) Describe the line of charge as a collection of point charges centered on the z-axis. Calculate the electric scalar potential of that same line of charge.
The capacitor has to have the following specifications: Needs to provide 100 horsepower for 10 hours Max operation voltage of 480V The min and max for the dielectric and metals are: 10 nm
A Rankine cycle power plant steam enters the turbine at 100psia and 800deg F.. Heat is rejected in the condeser at 80deg F. Isentropic sxpansion and compression occurs in the turbine and pump respectivel
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