Figure 1.32 shows five point loads placed on a straight line at 1 cm intervals. For what value of q1 and q2 is the resulting electric force exerted on each of the other three charges zero?

Each of two very long, straight rods carry opposite charges of 2.0x10^-6 C per meter. These rods are parallel to each other and separated 10 cm. Find the force (magnitude and direction) between them (use L >> r and assume uniform force per unit length. Can you use the simple equation F=QE ?). Would you be able to feel this force if the rods are 1 meter long?

A charge of +8.35mC is placed in a region where an electric field is present.  If the magnitude of the electric field is 869.8 N/C, what is the magnitude of the electric force on this charge in units of Newtons?

A simple electroscope to measure electrical charges is made up of two cork spheres covered with metal sheets, each sphere weighs 1.25x10-4 kg and hangs from a 12 cm long thread, when equal electrical charges are added to the spheres, the force of electrical repulsion moves them away and the angle between the wires indicates the magnitude of the electric charge, if the equilibrium angle between the wires is 500, what is the magnitude of the electric charge?

Consider the following figure. (The four charges are at the corners of a square. Take q = 1.08 µC and Q = 1.83 µC.)   (a) In the figure, what are the magnitude and direction of the resultant force on q1? (Take q1 as the origin of the coordinate system and measure the angle counterclockwise from the positive x-axis, which is directed towards the right.) magnitude   direction   ° (b) What is the resultant force on the center of mass of the four charges?

If the gravitational force of two identical particles is equal to the electrostatic force between the proton (p) and the electron (e), what is the mass m of the particles? The magnitude of the charge of the electron and proton is e = 4.8x10-10 esu (CGS), G-6.7x10 CGS, the distance between the [p, e] pair is equal to the distance between the [m, m] pair.

Four identical charged particles (q = +10.4 µC) are located on the corners of a rectangle as shown in the figure below. The dimensions of the rectangle are L = 61.2 cm and W = 15.7 cm. (a) Calculate the magnitude of the total electric force exerted on the charge at the lower left corner by the other three charges. N(b) Calculate the direction of the total electric force exerted on the charge at the lower left corner by the other three charges. ° (counterclockwise from the +x-axis)

Three charges q1, q, and q2 are in a line. If q = 5.0 μC and d = 30 cm, then what is the magnitude and direction of the electric force acts on the charge q.   Known : Charge 1 (q1) = 30 μC = 30 x 10-6 C Charge 2 (q2) = 60 μC = 60 x 10-6 C Charge 3 (q) = 5 μC = 5 x 10-6 C Distance between q1 and q = d Distance between q2 and q = 2d d = 30 cm = 0.3 meters d2 = (0.3)2 = 0.09 meters Coulomb’s constant (k) = 9 x 109 N m2 C-2

Two charged particles are a distance of 1.72 m from each other. One of the particles has a charge of 7.94 nC, and the other has a charge of 4.34 nC. (a) What is the magnitude (in N) of the electric force that one particle exerts on the other? 9.2e-8    1.05e-07 What law gives the magnitude of the force between two charged particles? What units should the charges be in to get a force in units of newtons? N (b) Is the force attractive or repulsive? attractive repulsive

Consider the electrostatic force between two particles of equal mass m = 25.6 × 10-26 kg and carrying different charges q1 = 14e and q2 = 28e, where e denotes the magnitude of the charge on an electron. At what distance, in meters, is the electrostatic force between these two particles equal to the weight of one of them?