Help Needed: Calculating Mass/Charge Ratio & Carbon Atom Count

[physics.student]

Hi I am just having trouble figuring out this question. If someone can help me out it would be greatly appreciated

The imaging drum of a photocopier is positively charged to attract negatively charged particles. Near the surface of the drum, its electric field has a magnitude of 1.40 * 10^5 N/C. A toner particle is to be attracted to the drum with a force that is ten times the weight of the particle.

What is the ratio of the mass of a toner particle to the magnitude of its net charge?

If the toner particles are made of carbon, how many carbom atoms are there for each excess electron on a toner particle?

 

[member 553083]

The ratio of the mass of a toner particle to the magnitude of its net charge is not possible to calculate without additional information. If the toner particles are made of carbon, there would be 6 x 10^23 carbon atoms for each excess electron on a toner particle.