how many electrons must be removed from an electrically neutral silver dollar to give a charge of +2.8 uc
2.8*10^-6 C divided by the charge of a single electron, 1.60*10^-19 C/electron.
It makes no difference what the material and size is.
To determine the number of electrons that must be removed from an electrically neutral silver dollar to achieve a charge of +2.8 microcoulombs (uc), we need to use the fundamental concept of electric charge.
The elementary charge, denoted as 'e', is the charge of a single electron or proton, which is approximately equal to 1.6 x 10^-19 coulombs (C).
Given that we want to find the number of electrons removed, we can use the relationship between charge ('Q') and the number of elementary charges ('n'):
Q = n * e
Rearranging the equation to solve for 'n', we have:
n = Q / e
Now let's substitute the given values:
Q = +2.8 microcoulombs (uc) = +2.8 x 10^-6 C
e = 1.6 x 10^-19 C
n = (+2.8 x 10^-6 C) / (1.6 x 10^-19 C)
Calculating this expression will give us the number of electrons that must be removed from the silver dollar to achieve a charge of +2.8 uc.