Physics, 02.11.2019 23:31 nicoledambrosia16
(a) consider a flat sheet of metal foil that is infinite in extent. it carries current, with uniform surface current density k = 200a/m i. determine a formula for the magnetic field due to this current at a distance z from the sheet [6] i. imagine that the sheet is cut to a strip m wide and infinitely long, with the current directed perpendicularly to the long axis. now it is rolled into an infinitely long cylinder of circumference 20cm a. calculate the magnetic field amplitude both inside the cylinder, and outside [4] b. derive a formula for the magnetic vector potential at a distance r from the axis of the cylinder c. briefly discuss the relative merits of the approaches using ampere's law, and using the biot-savart law to part a) of this question
Answers: 3
Physics, 22.06.2019 05:10
Total solidification times of three casting geometries are to be compared: a sphere, a cylinder, in which the length-to-diameter ration - 1.0, and a cube. volume = 1000 cm^3 for all three shhapes, and the same casting alloy is used. a) determine the solidification times of each geometry b) based on the results of part (a), which geometric element would make the best riser? c) if the mold constant = 3.5 min/cm^2 in chvorinov's rule, compute the total solidification time for each casting.
Answers: 3
Physics, 22.06.2019 09:30
Suppose you increase your walking speed from 7 m/s to 13 m/s in a period of 2 s. what is your acceleration?
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Physics, 22.06.2019 16:20
Specific heat refers to the amount of heat required to change 1 gram of a substance by degree(s) celsius
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Physics, 22.06.2019 23:30
The diagram shows a wave. the quantity shown is the amplitude. this quantity is directly proportional to which of these other quantities? a) energy b) frequency c) period d) wavelength
Answers: 2
(a) consider a flat sheet of metal foil that is infinite in extent. it carries current, with uniform...
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