Question #a20f5

1 Answer
Jul 29, 2016

Answer:

#1/3# meters to the right of #q1# and #3 # meters to the left of #q_1# (assuming #q_2# is to the right of #q_1#)

Explanation:

Electric field from #q_1# to cancel #q_2# would mean:
#E_1=E_2#

#kq_1/r^2=kq_2/(1-r)^2#
#r# is the distance from #q_1#.

Rearrange the equation and you have a quadratic equation:
#3r^2+2r-1=0#

Find the roots and you have #1/3m# (to the right) and #-3m# (to the left).