A long straight wire has fixed negative charge with a linear charge density of magnitude 3.8 nC/m. The wire is to be enclosed by a coaxial, thin-walled, nonconducting cylindrical shell of radius 1.6 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 is zero. Calculate σ.

Explanation:

1. We  need two market for the cylindrical shell and second for the rod.

By Gauss Law for shell, and then eq. becomes  , we integrate to find

....

Gauss Law for rod, Where is charge per length and is the rod's length (). We integrate to find

-solve the two equations to find the value of

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explanation:

the answer is a. the yacht traveled from the dock north to the 200-meter marker in the bay in less than 5 minutes, giving the passengers several more hours to fish.

im doing peak rn so sry if its wrong