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Consider a uniformly charges cylinder (radius R, height H, charge density ρ). Imagine it at the center of a cube (sides of length L). Calculate the flux of the electric field created by the cylinder through the surface of the cube. How would your answer change if H became greater than L? What can you say about the flux through the top (parallel to the ends of the cylinder) surface, as compared to that through one of the vertical (parallel to the axis of the cylinder) faces; in particular, how do they compare as H and R vary in size?
Write a C program for a HCS12 microcontroller that writes the value, 0x78, to Memory Location VAR1 and then calls a delay function. The delay function should generate a delay of 0.25 milliseconds.
Using many resistors and the DMM, try to determine what digits each colour band represents. Briefly explain your method and your findings in the space below.
Modify the state diagram branching conditions in the diagrams below as needed to ensure the sum and exclusion rules are obeyed in each case.
Find the permittivity of a parallel-plate capacitor if its capacitance is 100 ?F, the dimension of each rectangular plate is 1cm by 0.5cm, and the distance between the plates is 1mm.
Two charged, parallel, flat conducting surfaces are spaced d = 2.10 cm apart and produce a potential difference ΔV = 500 V between them. An electron is projected from one surface directly toward the second.
A Fabry-Perot interferometer is to be used to resolve the mode structure of a He-Ne laser operating at 632.8 nm. The frequency separation between the modes is 150 MHz. The plates are separated by an air gap and have a reflectance of r^2=0.999.
The frequency of a clocking signal is 10MHZ and it is used to sample serial data stream. If the data must be stable for 15ns before the leading clock edge and for 10ns after the leading clock edge, how much time is available to change the data bet..
When a 0.900kg mass oscillates on an ideal spring, the frequency is 1.49Hz . A)What will the frequency be if 0.300kg are added to the original mass. Try to solve this problem without finding the force constant of the spring.
A sinusoidal current is zero and increasing at t = -3.33ms; the next zero crossing occurs at t = 6.67ms. a) calculate T, F, and W. b) if i(0) = 25.98 A, Find i(t). c) By what angle does i(t) lead another current i(t) = 5 sin (wt - 5°) A.
A dc shunt motor of 50 hp, 250 V is connected to a 230 V supply and is drawing an armature current of 200 A, and is running at speed of 1200 rpm. Its armature resistance is Ra = 0.2 ohms.
Design a circuit that, given a 2-bit value, will light a LED corresponding to that value. One of four LEDs should be lit for each of the four possible input values (binary 0 through 3).
what is the common mode of starting the synchronous motor. Explain the function of the damper winding popularly called as the "amortisseur winding". Indicate all circuit diagrams to explain working of the synchronous motor.
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