Final answer:
The charge contained in a section of the line of length 3.00 cm is approximately 1.30 x 10^-16 C.
Step-by-step explanation:
In order to find the charge contained in a section of the line, we need to use the formula for electric force which is given by
F = qE
where F is the electric force, q is the charge, and E is the electric field strength.
From the given information, we have an electric field strength of 740 N/C and a force of 9.60 x 10^-14 N. Plugging these values into the formula, we can solve for q:
9.60 x 10^-14 N = q * 740 N/C
Simplifying the equation, we get:
q = (9.60 x 10^-14 N) / (740 N/C)
Calculating this, we find that the charge contained in a section of the line of length 3.00 cm is approximately 1.30 x 10^-16 C.