SUMMARY
The electric force between a glass ball with a charge of +2.8 µC and a rubber ball with a charge of -4.8 µC, separated by a distance of 4.5 cm, can be calculated using Coulomb's Law. The formula F = k * Q1 * Q2 / r^2 applies, where k is the electrostatic constant (approximately 8.99 x 10^9 N m²/C²). The correct calculation yields an electric force of approximately -59.73 N, indicating an attractive force due to the opposite charges of the balls.
PREREQUISITES
- Coulomb's Law
- Understanding of electric charge units (microcoulombs)
- Basic algebra for manipulating equations
- Knowledge of the electrostatic constant (k)
NEXT STEPS
- Review the derivation and applications of Coulomb's Law
- Learn about the electrostatic constant and its significance in calculations
- Explore examples of electric force calculations with varying charge values
- Investigate the effects of distance on electric force using different charge configurations
USEFUL FOR
Students studying physics, particularly those focusing on electrostatics, as well as educators looking for practical examples of Coulomb's Law applications.