Final answer:
The force on the 1.0 nC charge is 7.20 * 10^-4 N.
Step-by-step explanation:
The force (F) on a charge (q) is given by the formula: F = q * E, where E is the electric field strength. In this case, the charge is 1.0 nC (nano-coulombs) and the electric field strength is 7.20 * 10^5 N/C (newtons per coulomb).
Thus, substituting the values into the formula, we have: F = (1.0 * 10^-9 C)(7.20 * 10^5 N/C) = 7.20 * 10^-4 N.
Therefore, the force on the 1.0 nC charge is 7.20 * 10^-4 N.