Hope this helps!
A) Exactly flux = E*A = Q / o
But the enclosed charge Q just under the paint layer is 0, so
the field E = 0 N/C (everywhere inside the paint layer).
Hope this helps!
C) Set up OK, but you erred in the first step you should have
4pi(0.15)^2
Oh, wait; I see youve corrected that in the actual calculation.
But I still think youve made a calculator error somewhere.
I get 9.17e6 N/C.
B) This one looks set up fine. Id round the result to 3.20e7 N/C.
This post is last updated on hrtanswers.com at Date : 1st of September – 2022