Posted by rick on Thursday, January 24, 2008 at 10:59am.
Do you know the charge per electron?
number*charge per electron= total charge
solve for number.
i don't know what you mean about the charge of the electron? or what number do you times it by.
http://scienceworld.wolfram.com/physics/ElectronCharge.html
number electrons= totalcharge/chargeperelectron
q=(n*e).....(i)
where, q= charge,
n=number,
e= charge of an electron
n=q/e....(i) (from equation i)
given,q= +2.8mc= +2.8*10^-6 c
we know, charge of an electron(e)=1.6*10^-19 c
hence n= (2.8*10^-6)/(1.6*10^-19)
= 1.75*10^13
so, 1.75*10^13number of charges should ne removed.
q=(n*e).....(i)
where, q= charge,
n=number,
e= charge of an electron
n=q/e....(i) (from equation i)
given,q= +2.8mc= +2.8*10^-6 c
we know, charge of an electron(e)=1.6*10^-19 c
hence n= (2.8*10^-6)/(1.6*10^-19)
= 1.75*10^13
so, 1.75*10^13number of charges should be removed.
what? i don't get it. ISn't 1.72*10^3 the number of electrons for 2.7uC?
ÏáßäÇ ÞÖíÈ ÈÞãÇÔ ÌÇÝ ÝÍãá ÔÍäÉ ÞíãÊåÇq=3.2*10 14-
1.5x10^13