Force between two metal spheres after electron transfer

[dgresch]

Two neutral metal spheres are separated by 0.5m when 3.0x10¹³ electrons are transferred from one to the other. Calculate the resultant force magnitude and whether it is attractive or repulsive.


q=Ne
F=kq₁q₂/r²
I think?


q=(3.0x10¹³)(-1.602x10^-19C)
q=-4.8uC

F=(9x10⁹)(-4.8uC)(4.8uC)/(0.5m)²
F=-0.83N [attractive]

Does this seem correct?

 

[gneill]

Looks okay!

 

[dgresch]

thanks for the confirmation