College Physics
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Two positive charges, each 7.7 microcoulombs (µC), are placed around a hollow, uncharged, perfect
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- The figure below shows four small beads, each with a positive charge, at the corners of a square. The length of each side of the square is a. The bead at top-right has a charge of q; the one at lower-left has a charge of 8.0q; the other two each have a charge of 6.0q. (Assume that the +x- axis is to the right and the +y-axis is up along the page.) 6.0q a a 8.0q 6.0g a (a) What is the magnitude of the force on the bead with charge q? Express your answer in terms of ke, q, and a in symbolic form. F = (b) What is the direction of the force on the bead with charge q? (Enter your answer in degrees counterclockwise from the +x-axis.) ° counterclockwise from the +x-axisarrow_forwardSuppose three point charges are arranged as shown in the figure. A charge q1 = + 1.2 μC is located at the origin of an (x, y) coordinate system; a second charge q2 = − 0.60 μC is located at (1.20 m, 0.50 m) and the third charge q3 = + 0.20 μC is located at (1.20 m, 0). What is the force on q1 due to the other two charges?arrow_forwardChapters 21 and 22, Problem 1arrow_forward
- Three equal charges, each of +4.6 pC, are spaced along a straight line. Charge A, is at one end of the line of 1.8 m from the central charge, B. Charge C is the other side of charge B a distance of 2.2 m from charge B. What is the magnitude and direction of the total force on each charge?arrow_forwardTwo identical conducting spheres, fixed in place, attract each other with an electrostatic force of 0.0895 N when their center-to-center separation is 66.1 cm. The spheres are then connected by a thin conducting wire. When the wire is removed, the spheres repel each other with an electrostatic force of 0.0282 N. Of the initial charges on the spheres, with a positive net charge, what was (a) the negative charge on one of them and (b) the positive charge on the other? (Assume the negative charge has smaller magnitude.) (a) Number (b) Number Units Unitsarrow_forwardThree charges are arranged along a straight line as follows: q1 --- q2 --- q3. The distance between charges q1 and q2 is 13.81cm, and that between q2 and q3 is 25.08cm. The charges are as follows: q1= +4.90uC, q2=+5.07uC, q3=+6.69uC.What is the net force (N) acting on charge q2? Consider the left direction to be negative.arrow_forward
- Consider the two small, equal-mass, charged spheres shown in the figure. The top sphere is suspended from the ceiling by a thread, and has a charge of q1 = 28.6 nC. The bottom sphere has a charge of q2 = −58.0 nC, and is directly below the top sphere. Assume d = 2.00 cm and m = 6.90 g. A rope hangs vertically down from a ceiling with a positive charge q1 at its end. Negative charge q2 is a distance ddirectly below q1. (a) Calculate the tension (in N) in the thread. N (b) If the thread can withstand a maximum tension of 0.180 N, what is the smallest value d can have before the thread breaks? (Give your answer in cm.) cmarrow_forwardThere is a 30 microcoulomb charge at the origin. There is a 154 microcoulomb charge on the x axis at x = 4 meters, and a 146 microcoulomb charge on the y axis at y = 4 meters. What is the magnitude of the net force from the interaction between the charges on the 30 microcoulomb charge at the origin. Give you answer in Newtonsarrow_forwardThree charges are arranged as shown in the figure below. Find the magnitude and direction of the electrostatic force on the charge q = 5.28 nC at the origin. (Let r12 = 0.240 m.) Three point charges lie along the axes in the x y-coordinate plane. Positive charge q is at the origin. A charge of 6.00 nC is at (r1 2, 0), where r1 2 > 0. A charge of −3.00 nC is at (0, −0.100 m). magnitude N direction ° counterclockwise from the +x-axisarrow_forward
- A positively charged rod is brought near a neutral conducting metal sphere. Someone then touches the sphere for a few moments, then releases it. The rod is then pulled away from the sphere. What has happened to the charge and mass of the sphere?arrow_forwardWhen two identical conducting spheres are held in place and their center-to-center spacing is 42.5 cm, they attract each other with an electrostatic force of 0.019 N. A tiny conductive wire connects the spheres after that. The spheres repel each other with an electrostatic force of 0.0360 N when the wire is removed. With a positive net charge, what was (a) the negative charge on one and (b) the positive charge on the other of the original charges on the spheres?arrow_forwardThree charged particles are situated along the x-axis. A charge of '+q' is fixed at the origin. A charged of '+3q' is fixed at x=12cm. A third charge of '-q' is placed at x=4.0cm. What is the net force on the '-q' charge? (*q is the magnitude of the charge of a proton/electron)arrow_forward
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