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Object A is metallic and electrically neutral. It is charged by induction so tha

ID: 1523178 • Letter: O

Question

Object A is metallic and electrically neutral. It is charged by induction so that it acquires a charge of -3.0 muC. Object B is identical to object A and is also electrically neutral. It is charged by induction so that it acquires a charge of +3.0 muC. Find the difference in mass between the charged objects and state which has the greater mass. 4.8 times 10^-17 kg, object A has more mass 5.2 times 10^-17 kg, object B has more mass 2.9 times 10^-17 kg, object A has more mass 1.7 times 10^-17 kg, object B has more mass 3.4 times 10^-17 kg, object A has more mass

Explanation / Answer

here,

the difference in charge , q = 3 uC - ( - 3 uC) = 6 uC

the number of electrons , n = q/e = 6 * 10^-6 /( 1.6 * 10^-19)

n = 3.75 * 10^13 electrons

mass of n electrons , m = n * e

m = 3.75 * 10^13 * 9.1 * 10^-31

m = 3.4 * 10^-17 kg

the negative charged object will gain electrons , so

it has more mass

hence E) the difference is 3.4 * 10^-17 kg and object A has more mass