A charge of q1 = 8 * 10-3 C and a charge of q2 = -5 * 10-5 C are separated by 200 cm. The first charge is located at x = 0 cm on the x-axis, and the second charge is located at x = 200 cm on the x-axis. Draw a free body diagram of the two charges with each of the two charges labeled with their magnitudes, with the distance between the charges labeled, and with vectors (arrows) representing the force on each of the charges. At x = 50 cm on the x-axis, what is the electric potential due to the pair of charges? If q2 is moved from x = 200 cm to x = 300 cm, what is the change in the potential energy (in Joules) of q2? If q2 is moved from x = 200 cm to x = 100 cm, what is the change in the potential energy (in Joules) of q2? Circle the correct word in parentheses: The potential energy of q2 is increased as it is moved in the (positive, negative) direction along the x-axis.

Three charged marbles are glued to a nonconducting surface and are placed in the diagram as shown. The charges of each marble are q₁ = 6.70 µC, 92 = 1.01 µC, and q3 = -2.27 μC. Marble q₁ is a distance r₁ = 3.00 cm to the left of the marble 92, while marble q3 is a distance r3 = 2.00 cm to the right of the marble q2, as shown. Calculate the magnitude of the electric field a distance r' = 1.00 cm to the left of the center marble. N/C y K t * 91 92 observation point ---Select--- V 93 Another marble is placed 1 cm to the left of the middle marble. If this new marble has a charge of -3.71 µC, calculate magnitude and direction of the force on it. magnitude direction N 7₂=0m

You have 3 charges, each with magnitude 42 C. One charge sits at (x,y)=(0,0) one at (x,y)=(0.9,0), and one at (x,y)=(0,0.9). All distances are in metres. Find the net force on charge 42 µC that is placed at (x,y)=(0.9,0.9) Number 1+ Number IN Find the net force on a charge 42 µC that sits at (x,y)= (0,6.6) Number 1+ Number IN

Three charged marbles are glued to a nonconducting surface and are placed in the diagram as shown. The charges of each marble are q1 = 6.20 µC, q2 = 1.43 µC, and q3 = −2.01 µC. Marble q1 is a distance r1 = 3.00 cm to the left of the marble q2, while marble q3 is a distance r3 = 2.00 cm to the right of the marble q2. Calculate the magnitude of the electric field a distance r' = 1.00 cm to the left of the center marble.N/C Another marble is placed 1 cm to the left of the middle marble. If this new marble has a charge of  3.62 µC, calculate the magnitude and direction of the force on it.