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An engineer decides to set up an experiment to try this idea out. He decides to use a large metal plate or substrate as one electrode, then paint it and then place another electrode (with a smaller area) directly on top of the paint layer. (The parallel plate equation is still a good approximation using the smallest value for A).
Describe how a dielectric material responds to an alternating electric field.
Describe how the permittivity might change with time for a polymer material like the paint as it dries and explain how this measurement could be used to find when the paint was totally dry.
Describe two flaws with this initial experimental set-up.
Briefly (half a page max) describe a commercial system of measuring permittivity including all appropriate references.
The photoelectric threshold wavelength for Tungsten is 2300 Å. Find the energy in eV of the emitted electrons from the surface by ultraviolet light of wavelength 1800 Å.
A Si p-n-p transistor has impurity concentrations of 5´1018, 2´1017, and 1016 cm-3 in the emitter, base, and collector, respectively. The base width is 1.0mm, and the device cross-sectional area is 0.2 mm2.
Sometimes audio (or any) signals x(t) are decomposed into a sum of sinusoids. Consider x(t) the sum of three sinusoids of frequencies 518Hz, 730Hz, and 524Hz whose amplitudes are 1/2 of their corresponding frequencies.
a. Using the superposition theorem, determine the current through the 12 ohms resistor. b. Convert both voltage sources to current sources and recalculate the current to the 12 ohms. c. How do the results of parts (a) and (b) compare
The characteristic equation ofthe system is q(s) = s^5+13s^4+33S^3+32s^2+20s+k^2 where k>0. a). Find the range of values of k for which the system is stable using the Routh-Hurwitz table. b) What value of k makes the system marginally stable
Develop S-R Latch using 74x74, Would you please show me how to develop and S-R latch using a single 74x74 positive-edge-triggered
The electric field in a region of space is E= 4 ax V/m and the magnetic flux density is B= 5 az Wb/m2. At t= 0 a particle with mass 1 kg and charge 1 C is located at the origin traveling at a velocity of u0= 10 ay m/s.
A block error detecting code has a minimum distance of three. How many errors can this code detect and how many can it correct
Consider DSB used to transmit an audio signal of 6kHz on a GSM phone with a carrier around 879MHz. By what factor is the Nyquist rate greater if you sample the DSB signal directly rather than the baseband message signal
Calculate the S/N ratio for a receiver output of 4 V signal and 0.48 V noise both as a ratio and in decibel form. (69.44, 18.42dB)
Write a function called Balloon that will accept a single variable named S. The function should replace S with the square of S and repeat this process until S is either greater than 10^15 or less than 10^-15.
A continuous-time (CT) function is non-zero over a range of its argument from 0 to 4. It is convolved with a function which is non-zero over a range of its argument from -3 to -1. What is the non-zero range of the convolution of the two
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