Recent content by mimictt

well because I thought that if you have to calculate the force of two protons/electrons then you would have to multiply Q1 x Q2 and since they both have the same charge---> Q^2 this is how i got (1.6E-19)^82 because i thought that there are 82 protons with the same charge...

Homework Statement The nucleus of a lead atom has a charge of 82 protons a. what are the direction and magnitude of the electric field at 1.0x10^-10 m from the nucleus? Homework Equations E=Kq/r^2The Attempt at a Solution I did E= ((9 x10^9)(1.6X10^-19)^82)/ (1.0x10^-10)^2 but when I...

oh i think i got it! thank you so much!

it's 1.6x10^-19 C so does it mean that 7.5x10^-11/ 1.6x10^-19 is the number of electrons?

Hello everyone! I'm having a problem with this question from my book... How many electrons have been removed from a positively charged electroscope if it has a net charge o 7.5x10^-11 C? Can someone explain to me how to solve this problem>? Thank you very much!

THank you so much! :smile:

meaning that i should calculate the F[SIZE="3"]C on A and F[SIZE="3"]B on A and then subtract these two forces to get a net force on A?

I don't really know how to solve this problem. I only know how to calculate the net force on B, not A... here is the problem: sphere A is located at the origin and has a charge of +2.0x10^-6 C. Sphere B is located at +.6m on the x-axis and has a charge of -3.6x10^-6 C. Sphere C is located...