1. An object is massaged with fur it until begins to develop a -3.3 coulomb charge. How many electrons did the fur add to the balloon?
2. Evaluate the force among both point charges 6.7 mC and 4.1 mC divided by 8.46 cm in air.
3. Three-point charges are arranged in a line. A 4.9 microcoulomb point charge is to the left of a 6.4 microcoulomb charge, which is to the left of a -8.9 micro coulomb charge. Each consecutive charge pair is separated by 3 cm. Calculate the magnitude and direction of the force acting on the middle charge. After the units, including the direction (left or right).
4. A dipole is comprised of two equal and opposing charges that are divided by a given distance. The magnitude of the charges in such a dipole is 9.9 uC, and the separation of the charges is 4.8 mm. Determine the electric field strength at a distance of 5.5mm along the perpendicular line that separates the charges.
5. The following microcoulomb charges are found at the corners of an 8.6 cm square: 9.9, -19.8, 9.9, and -49.5. Determine the magnitude of the force acting on the -19.8 charge.
6. A rectangle of length 8.3 cm and width 6.6 cm seems to have its lower length along the positive x-axis and its left width along the positive y-axis. The origin has a point charge of -5 uC, and the other three corners have point charges of 5 uC. Determine the magnitude of the x-component of the force at the origin.
7. A distance of 7 cm separates two point charges of 8 muC and -2muC. Determine the magnitude of the electric field strength in the middle of the charges.
8. A square of sides 5 has charges of 1.7 mC at its corners. Determine the strength of the electric field in the square's center.