Answer:
Electric field is zero at point 4.73 m
Step-by-step explanation:
Given:
Charge place = 50 cm = 0.50 m
change q1 = 5 µC
change q2 = 4 µC
Computation:
electric field zero calculated by:

Where electric field is zero,
First distance = x
Second distance = (x-0.50)
So,
E1 = E2


x = 0.263 or x = 4.73
So,
Electric field is zero at point 4.73 m