Download Coulomb`s Law Practice problems: Show KUES in the space provided

Coulomb's Law Practice problems: Show G-U-E-S-S in the space provided.
k = 9.0 x 109 N·m2/C2 …….. F= k[q1q2/d2]
1. What is the electrostatic force between two metal spheres, each having 5 C of charge. The balloons are 0.30 m apart.
2.5 x 1012 N
2. Suppose that two point charges, each with a charge of +1 Coulomb are separated by a distance of
1 meter. (a) Will they attract or repel? (b) Determine the magnitude of the electrical force between them.
9 x 109 N
3. Two balloons are charged with an identical quantity and type of charge: -0.0025 C. They are held apart at a separation
distance of 8 m. Determine the magnitude of the electrical force of repulsion between them.
878.9 N
4. Two charged boxes are 4 meters apart from each other. The blue box has a charge of +0.000337 C and is attracting the
red box with a force of 626 Newtons. Determine charge of the red box. Remember to indicate if it is positive or negative.
0.0033 C
5. A piece of styrofoam has a charge of -0.004 C and is placed 3 m from a piece of salt with a charge of -0.003 C. How much
electrostatic force is produced?
12,000 N
Electric Field Intensity—Use the G_U_E_S_S method to do your work. Credit will only be given for steps shown.
Ei= F/q …… Electric Field Intensity = force/ charge
6. Calculate the force exerted on an electron [-1.6x 10-19C ] in an electric field, whose intensity is 2.0 X 102 N/C.
7. What is the charge on an object that experiences a force of 5 N in and electric field of 50 newtons per coulomb?
8. What is magnitude {amount} of electric field intensity at a point in the field where an electron[-1.6x 10-19 C] experiences
a 1 N force?
9. What is the electric field intensity of 25 X 1018 electrons that experiences a 16 N force? [Think this one through]
10. How many electrons would experience an electric field intensity of 250 N/C if there was a force of 125 N acting on the
electric field?