Two small metallic spheres, each of mass 0.20 g, are suspended as pendulums by light strings from a common point as shown in Figure below. The spheres are given the same electric charge, and it is found that they come to equilibrium when each string is at an angle of 5.0° with the vertical. If each string is 30.0 cm long, what is the magnitude of the charge on each sphere? (Final answer in nanocoulombs. round off to the nearest tenths place) (do not include units) 30.0 cm, 0.20 g 0.20 g

Two hard rubber spheres, each of mass m = 14.9 g, are rubbed with fur on a dry day and are then suspended with two insulating strings of length L = 5.25 cm whose support points are a distance d = 3.06 cm from each other as shown in the figure below. During the rubbing process, one sphere receives exactly twice the charge of the other. They are observed to hang at equilibrium, each at an angle of 0 = 10.4° with the vertical. Find the amount of charge on each sphere. (Enter your answers from smallest to largest.)

The figure below shows the electric field lines for two point charges separated by a small distance. (a) What are the signs of q1 and q2? (b) Determine the ratio q1/q2. Express your answer to 3 significant figures.

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?

A charged box (m = 475 g. q +2.50 uC) is placed on a frictionless incline plane. Another charged box (Q = +75.0 µC) is fixed in place at the bottom of the incline. If the inclined plane makes an angle 0 of 35.0 with the horizontal, what is the magnitude of the acceleration of the box when it is 59.0 cm from the bottom of the incline? acceleration: m/s What is the direction of the acceleration of the box? up the ramp down the ramp neither

Two point charges, +3 C and -6 C, are separated by 2.0 m. They are NOT free to move. What is the magnitude of the electrostatic (Coulomb) force between the charges? Set up the needed equation(s), but do not attempt to obtain a numerical result. (Leave your answer as a function of k.) What is the net electric field at the point halfway between the two charges? Set up the needed equation(s), but do not attempt to obtain a numerical result. (Leave your answer as a function of k.) What is the net electric potential at the point halfway between the two charges? Set up the needed equation(s), but do not attempt to obtain a numerical result. (Leave your answer as a function of k.)

Two hard rubber spheres, each of mass m = 14.9 g, are rubbed with fur on a dry day and are then suspended with two insulating strings of length L = 5.25 cm whose support points are a distance d = 3.06 cm from each other as shown in the figure below. During the rubbing process, one sphere receives exactly twice the charge of the other. They are observed to hang at equilibrium, each at an angle of 0 = 10.4° with the vertical. Find the amount of charge on each sphere. (Enter your answers from smallest to largest.) с C Need Help? Submit Answer m Read It L 18 m

Two small metallic spheres, each of mass m = 0.30 g, are suspended as pendulums by light strings from a common point as shown in the figure below. The spheres are given the same electric charge, and it is found that they come to equilibrium when each string is at an angle of 0 = 8.2° with the vertical. If each string has length L = 40.0 cm, what is the magnitude of the charge on each sphere? L m nC

Two small metallic spheres, each of mass m = 0.15 g, are suspended as pendulums by light strings from a common point as shown in the figure below. The spheres are given the same electric charge, and it is found that they come to equilibrium when each string is at an angle of 0 = 4.8° with the vertical. If each string has length L = 40.0 cm, what is the magnitude of the charge on each sphere? L m Your response differs from the correct answer by more than 10%. Double check your calculations. nC

Consider the following situation. Particles A and B have equal charge. They are separated by a distance d and they each experience a force of F from the other. What force will they both experience if the distance between them is increased to 2d?