help on electric problems

[Farside]

I missed the material for these couple of problems. If someone could help explain how to solve them I would much appreciate it. :cool:

1.) A charge of +2 x 10^-6 C is 20cm from a charge of -3 x 10^-6 C. Find the magnitude and direction of the force on each charge.

2.) A 120-V electric coffeepot draws a current of 0.6 A. What is the resistance of its heating element?

[Doc Al]

1.) A charge of +2 x 10^-6 C is 20cm from a charge of -3 x 10^-6 C. Find the magnitude and direction of the force on each charge.
Look up Coulomb's law.
2.) A 120-V electric coffeepot draws a current of 0.6 A. What is the resistance of its heating element?
Look up Ohm's law.

[Theelectricchild]

F_E = \frac{Q_1Q_2}{4\pi\epsilon_0r^2}

V = IR

[Theelectricchild]

Also Newtons Third Law should help you determine the force on EACH charge to your first question.