What is the magnitude of a point charge in coulombs whose electric field 55 cm away has the magnitude 1.7 N/C?

Two point charges Q1 and Q2 are 8.40 m apart. The charge of Q1is –6.99E-9 C. The electric field at the middle point between Q1 and Q2is measured to be zero. What is the charge of Q2 (in Coulomb)?

You hold a ruler that has a charge on its tip 4.00 cm above a small piece of tissue paper to see if it can be picked up. The ruler has  −10.0 µC  of charge. The tissue has 1.00 g of mass. What is the minimum charge required to pick up the tissue paper?

Charge is distributed over a triangular region in the xy-plane bounded by the y-axis and the lines y = 5 – x and y = 1+ x. The charge density at a point (x, y) is given by o(x, y) = x + y, measured in coulombs per square meter (C/m 2). Find the total charge. Select one: а. 4 С Ов. 68 3 44 C 3 O c. O d. 20 37 C 3 е.

Two point particles with charges +7 μC and +3 μC are held in place by 5-N force on each charge in appropriate directions. How far apart are the two charges (in meters)?

Part A A small, 250 g cart is moving at 1.50 m/s on a frictionless track when it collides with a larger, 5.00 kg cart at rest. After the collision, the small cart recoils at 0.870 m/s. What is the speed of the large cart after the collision? Express your answer with the appropriate units. ? Value Units

Two pieces of tape are stuck together, and then ripped apart, forming an electric dipole with one piece of tape at +0.20nC, the other at -0.20nC, held 3.0cm apart from each other. What is the electric field at a point positioned 10.0cm from the positive charge and 13.0cm from the negative? provide an answer with correct significant figures.

Two pieces of tape are stuck together, and then ripped apart, forming an electric dipole with one piece of tape at +0.20nC, the other at -0.20nC, held 3.0cm apart from each other. What is the electric field at a point positioned 10.0cm from the positive charge and 13.0cm from the negative? If a capacitor has an electric field with a magnitude of 1 microNewton/Coulomb exactly halfway between its positive and negative plates, then how much charge is on its positive plate?

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Three charged particles are at the corners of an equilateral triangle as shown in the figure below. (Let q = 2.00 μC, and L = 0.850 m.) 7.00 με y 60.0⁰ 9 L -4.00 μC @ (a) Calculate the electric field at the position of charge q due to the 7.00-μC and -4.00-μC charges. kN/CÎ + KN/C j (b) Use your answer to part (a) to determine the force on charge q. mNÎ + mNj