Aballoon, initially neutral, is rubbed with fur until it acquires a net charge of -0.60 nc. (a) assuming that only electrons are transferred, were electrons removed from the balloon or added to it? (b) how many electrons were transferred?

(a) electrons are added

(b)

Explanation:

Charge acquired by the balloon, q = - 0.6 nC

(a) As the balloon gets negative charge, so that it means the balloon gains electrons. The electrons are negatively charged, so a body have negatively charged means that the electrons are added to the body.

(b) The charge of one electron is given by e.

e =

The number of electrons is given by the ratio of total charge to the charge of one electron.

let there are n number of electrons

n =

mass and volume are the answers you are looking for

the minimum amperage that the current in this wire would have to have so that its weight is completely supported by the magnetic force due to earth's field, assuming that no other forces except gravity act on it