Coulomb's law for the magnitude of the force between two particles with charges and separated by a distance is
,
where , and is the permittivity of free space.
Consider two point charges located on the x axis: one charge, = -10.0 , is located at = -1.680 ; the second charge, = 35.0 , is at the origin .

What is the net force exerted by these two charges on a third charge = 49.0 placed between and at = -1.215 ?
Your answer may be positive or negative, depending on the direction of the force.

Question

Coulomb's law for the magnitude of the force  between two particles with charges   and   separated by a distance  is
,
where , and  is the permittivity of free space.
Consider two point charges located on the x axis: one charge,  = -10.0 , is located at   = -1.680 ; the second charge,  = 35.0 , is at the origin .

What is the net force exerted by these two charges on a third charge   = 49.0 placed between  and  at   = -1.215 ?
Your answer may be positive or negative, depending on the direction of the force.