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A long straight conducting rod (or wire) carries a linearcharge density λ of +2.0μC/m. This rod is totallyenclosed within a thin cylindrical shell of radius R, which carriesa linear charge density of -2.0μC/m.
A) Describe how you would construct two Gaussian surfaces to calculate the electric field: one outside the cylindrical shell,and the other between the shell and the wire, to apply Gauss'Law.
B) Write the expression for the electric flux threading each of your Gaussian surfaces and for the resulting electric field ineach region.
If an average frequency emitted by a 200,-,rm W light bulb is 5.00 times 10^{14} , {rm Hz}, and 10.0 percent of the input power is emitted as visible light, approximately how many visible-light photons are emitted per second .
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The magnetic field between the poles of an electromagnet is 2.17 T. A coil of wire is placed in this region so that the field is parallel to the axis of the coil. How many turns are there in the coil
A NASA satellite has just observed an asteroid that is on a collision course with the Earth. With what speed will it hit the Earth's surface
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