Common static electricity involves charges ranging from nanocoulombs to microcoulombs. how many electrons must be removed from a neutral object to leave a net charge difference of 0.83μc?

electron must be removed

Explanation:

We have given the net charge difference

We know that charge on one electron

Now let n electron are removed to create a charge difference of

So

electron must be removed

we have been given a quadratic function and we need to restrict the domain such that it becomes a one to one function.

we know that vertex of this quadratic function occurs at (5,2).

further, we know that range of this function is .

if we restrict the domain of this function to either or , it will become one to one function.

let us know find its inverse.

upon interchanging x and y, we get:

let us now solve this function for y.

hence, the inverse function would be if we restrict the domain of original function to and the inverse function would be if we restrict the domain to .

force required to detach it is given by

charges are taken to be fundamental charge

now we have

so above is the minimum distance at which it will detach