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A head is (approximately) a conducting sphere of radius 10 cm. What is the capacitance of the head? What will be the charge on the head if, by means of a Van De Graaf generator, you raise the potential on the head to 100,000 V?
What voltage would be required to cause electrostatic break down in air, |E? | = 3 × 10^6 volts/m? Now assume that we place a sharp object with radius of curvature r = 0.1 mm in electrical contact with your head to that it forms a series circuit with your head.
What are the answers to the questions above now?
You have a parallel plate capacitor of area A, gap d and two dielectric materials of constants κ1 and κ2. You only have enough of each material to fill 1/2 of the capacitor volume. Which arrangement maximizes the capacitance? Why?
Attachment:- Physics problems 2.docx
A photovoltaic cell is to be used with radiation of intensity from 2 to 15mW/cm2. If an optical source with a radius of 0.1cm is 200m away from the sensor, find the maximum power if the divergence is 1.2 x 10-3 rad.
An unmanned X-43A scramjet test vehicle has achieved a maximum speed of Mach number 9.68 in a test flight over the Pacific Ocean. Mach number is defined as the speed of an object divided by the speed of sound.
An engineering firm consisting of 3 programmers and 6 circuit engineers. The employees are randomly assign to 3 teams of 3, labeled Group 1, Group 2, and Group 3. a) How many ways are there to assign the 9 employees to Groups 1, 2 & 3
A magnetic flux of 400 microwebers passing through a coil of 1200 turns is reversed in 0.1 sec. Calculate the average value of the e.m.f induced in the coil.
A pitot-static probe is used to measure the velocity of150 C water. If the reading of the connected pressure transducer is 20 cm of water, what is the water velocity Did you need to make any assumptions andif so, what
Compute the Transfer Equation, The questions are for the equation: y"(t) + 6y'(t) + 34y(t) = 2x'(t) + 11x(t)
The purpose of this project is to design a device that would remotely control (from a Bluetooth-enabled mobile phone for instance) at least two actuators (e.g. relays and switches).
it is required to establisg a chart for count of nonconformities for a manufacturing process. if 25 units are to be inspected and the total number of the count of nonconformities from all the units is 141, determine the central line and control li..
1) A 1.5H inductor has a constant current of 2.5A. a) find the energy that it holds b) what is its voltage c) what is its energy after its current drops to zero and stays zero What power is dissipated when a 20 olhm resistor is connected to it
Derive an expression for the optimum value of the avalanche gain opt M for which the signalto-noise ratio (SNR) becomes optimum by using the following expression for the excess noise factor: Fa( M)=KM+ (1-K ) (2-1/M). Assume that M^3 >> M .
Within a region of free space, charge density is given as ρv=ρorcosθ/a c/m3, where ρo and a are constants. Find the total charge lying within (a) the sphere, r
CPU is considered as the brain of the computer, The CPU itself is an internal component of the computer that perform multiple functions:
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