### Find out the electric field at radius

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##### Reference no: EM134009

Question1

A long, straight wire has fixed negative charge with a linear charge density of magnitude 3.6 nC/m. The wire is to be enclosed by a cozxial, thin-walled non conducting cylindrical shell of radius 1.5 cm. The shell is to have positive charge on its outside surface with a surface charge density σ that makes the net external electric field zero. Analyse σ?

Question2

A 5.02 box sits on a ramp that is inclined at 35.7above the horizontal. The coefficient of kinetic friction between box and ramp is 0.23. Find out the horizontal force to move the box up with a constant acceleration of 4.10ms^-2.

Question3

Consider the uniformly charged sphere of radius 4.9m and total inside charge 5.1 μC. Find out the total flux passing with radius 1.36m

(a), Find out the electric field at radius 1.36m

(b), Find out the value of the electrostatic potential at the similar radius 1.36m(c)

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