Question

two charges of+200 micro coloumbs and -200 micro coloumbs are placed at the corners B and C of an equilateral triangle ABC of sidd 0.1m. the force on a charge of 5 micro coloumbs placed A is
plz answer fast friends plz

Answer 1

Plz answer mine firstAn object comprises of a uniform ring of radius R and uniform chord AB .which cannot be the centre of mass of the obj?
a.(R/3,R/3)
b.(R/root 2,R/root 2)
c.(R/4,R/4)
d. None of above

Answer 2

Answer:

f=900N

Explanation:

because here fresultant=square root of f1²+f2²+2f1f2 cos theta

but here F1=F2 =F

so fnet=square root of 2F²+2F²cos theta

on simplyfying we get 2Fcostheta/2

that is fnet=F

so using F=kq1q2/r² we get get 900