2021-12-15T12:52:24+00:00

# Physics: Find the electric field on any point on a y-axis and find the electric field as a function of the radial distance.

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# Physics: Find the electric field on any point on a y-axis and find the electric field as a function of the radial distance.

5.) A square of paper measuring a on a side carries a total charge +q which is uniformly distributed over its surface. The square lies in the x-y plane with its center at the origin and its sides parallel to the coordinate axes. Find the electric field on any point on the y-axis with y > a. Show that this square looks like a point charge for the case y>> a.

9.) The electric charge of the proton is not concentrated at a point but rather distributed over a volume. According to experimental investigations at the Stanford Linear Accelerator, the charge distribution of the pro- ton can be approximated by an exponential function

e
p= ____ e^((-r)/b)
8(pi)b

where r is the radial position inside the proton and b is a constant equal to 0.23 x 10^(-15)m. Find the electric field as a function of the radial distance. What is the magnitude of the electric field at r =1 x 10^(-15)m? Compare the electric field strength you find to that of a point charge of magnitude e. At what distances r do these two differ by 10% or more?

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