Two objects each have a positive charge. The total charge on both objects is 315 µC. When the objects are placed a distance of 1.15 m apart, each exerts an electrostatic force of 20.1 N on the other. What is the charge on each object? (Give your answers in µC.)

Question

anonymous · Answer

use the formula for the force between the two charges... taking note that Q1=315-Q2

anonymous · Answer

you have 2 equations, 2 unknowns... it can be solve...

anonymous · Answer

How do I solve for Q1

anonymous · Answer

$$F=\frac{Q_1Q_2}{4\pi\epsilon_0r^2}~~~~(1)$$$$Q_1=315-Q_2~~~~(2)$$plug-in values and substitute (2) to (1), there on you can solve for $Q_2$ first, then use (2) to solve for $Q_1$...

anonymous · Answer

@surgeyou have you solved it?

anonymous · Answer

yeah i got it thanks