More Coulomb's Law Problems
- A point charge of +0.6uC is separated by a distance of 4cm from a point charge of -18.0uC. What is the force on each charge? (-60.7N)
- A point charge of +2.5uC is separated by a distance of 12cm from a point charge of +3.0uC. What is the force on each charge? (4.7N)
- How many excess electrons are in a -2.0uC charge? (1.25E13 electrons)
- A balloon rubbed against denim gains a charge of -8.0uC. What is the electric force between the balloon and the denim when the two are separated by a distance of 5.0cm? (-230N)
- Two identical conducting spheres are placed with their centers 0.30m apart. One is given a charge of +12E-9C and the other is given a charge of -18E-9C.
- Find the electric force exerted on one sphere by the other. (-2.1E-5N)
- The spheres are connected by a conducting wire. After equilibrium has occurred, find the electric force between the two spheres. (8.99E-7)
- A small cork with an excess charge of +6.0uC is placed 0.12m from another cork, which carries a charge of -4.3uC.
- What is the magnitude of the electric force between the corks? (16.1N)
- Is this force attractive or repulsive? (attractive)
- How many excess electrons are on the negative cork? (2.69E13 electrons)
- How many electrons has the positive cork lost? (3.7E13 electrons)
- Two electrostatic point charges of +60.0uC and +50.0uC exert a repulsive force on each other of 175N. What is the distance between the two charges? (0.39m)