Here are the problems we did in class today. I will put a few more on here for Monday. Use Coulomb's Law.
1. A balloon rubbed against denim gains a
charge of -8.0 μC.
What is the electric force between the balloon and the denim when the 2
are separated by 5.0 cm?
2.Two charges of +60.0 μC and +50.0 μC exert a repulsive force on each other
of 175 N. What is the distance between
the two charges?
3.Two identical conducting spheres
are placed with their centers 0.30 m apart.
One has a charge of 12 x 10-9C and the other has a charge of -18
x 10-9C.
A) Find the electric force
exerted on one sphere by the other.
B) If the two spheres are connected
by a conducting wire, after the charges have rearranged, find the electric
force between the two spheres.
4. Calculate the net electric force on each charge if the charges
are +3.0 μC, +4.0 μC, and -2.0 μC and the positions are at 0.0 cm, 3.0 cm, and 7.0 cm.
5. Calculate the net electric force on each charge if the charges are -4.5 μC, +7.5 μC, and -6.0 μC.
6. Draw the electric field lines around 2 point charges: +2 and -3.
7. Draw the electric field lines between two charged plates. Show the direction a test charge (positive) would move in the field.
4. Calculate the net electric force on each charge if the charges
are +3.0 μC, +4.0 μC, and -2.0 μC and the positions are at 0.0 cm, 3.0 cm, and 7.0 cm.
5. Calculate the net electric force on each charge if the charges are -4.5 μC, +7.5 μC, and -6.0 μC.
6. Draw the electric field lines around 2 point charges: +2 and -3.
7. Draw the electric field lines between two charged plates. Show the direction a test charge (positive) would move in the field.
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