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# Coulomb's Law (Electric Force) Solutions Library

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125 solutions

Coulomb's Law (Electric Force)

#### Q. As an electron approaches a proton, the electric force of attractionA. decreasesB. increasesC. remains the same

Solved • Apr 6, 2021

Coulomb's Law (Electric Force)

#### Q. Four identical charges Q are placed at the corners of a square of side L.Find the magnitude total force exerted on one charge by the other three ch...

Solved • Mar 30, 2021

Coulomb's Law (Electric Force)

#### Q. What is the net force exerted by these two charges on a third charge q3= 45.0nC placed between q1 and q2 and at x3=-1.210m?

Solved • Mar 30, 2021

Coulomb's Law (Electric Force)

#### Q. Three charged particles are arranged along a line as in this figure.What is the charge on particle 3?

Solved • Mar 30, 2021

Coulomb's Law (Electric Force)

#### Q. If you double the charge on one of two charged objects, how does the force between them change?A. HalvesB. DoublesC. TriplesD. Does not changeE. Qu...

Solved • Mar 30, 2021

Coulomb's Law (Electric Force)

#### Q. A) Find the magnitude of the net force that the q=−13.0μC charge exerts on the dipole.Express your answer in newtons to three significant figures.B...

Solved • Mar 30, 2021

Coulomb's Law (Electric Force)

#### Q. What do electric forces between charges depend on?A. the quantity of charge involvedB. how far apart the charges are.C. both a. and b.D. none of th...

Solved • Mar 30, 2021

Coulomb's Law (Electric Force)

#### Q. The electric force between two point charges is given by Coulomb's Law  F = kq1q2/r2.If you make the distance between two charges 5.43 times larger...

Solved • Mar 30, 2021

Coulomb's Law (Electric Force)

#### Q. Suppose you have two point charges each of 79 nC. How many millimeters apart must the two charges be to have a force of 1.15 N between them?

Solved • Feb 11, 2021

Coulomb's Law (Electric Force)

#### Q. What is the force F on the 1 nC charge at the bottom? (Figure 1) Write your answer as two vector components, separated by a comma. Express each com...

Solved • Feb 10, 2021

Coulomb's Law (Electric Force)

#### Q. In the diagram below, two positively charged spheres, A and B, of masses mA and mB, are separated by a distance, dWhich of the following diagrams b...

Solved • Feb 10, 2021

Coulomb's Law (Electric Force)

#### Q. Four point charges of equal magnitude and sign are arranged on the corners of the square of sidedas shown in Fig. 21-5. Which of the arrows shown r...

Solved • Feb 9, 2021

Coulomb's Law (Electric Force)

#### Q. The identical small spheres shown in the figure on the right are charged to +100 nC and -100 nC. They hang as shown in a 100,000 N/C electric field...

Solved • Feb 4, 2021

Coulomb's Law (Electric Force)

#### Q. Two small tiny conducting spheres, both initially having no charge, are brought into contact and given a total charge of 5.00x104 electrons. The sp...

Solved • Feb 2, 2021

Coulomb's Law (Electric Force)

#### Q. Pictured on the right are three-point charges Q1 = 21.4 μC, Q2 = -30.6 μC, and Q3 = 57.3 μC arranged according to the figure on the right. A fourth...

Solved • Feb 2, 2021

Coulomb's Law (Electric Force)

#### Q. Three charges are located as shown in the figure, with values q1 = 4.9x10-16 C, q2 = -1.5x10-16 C, q3 = 6.75x10-16 C. The charges are separated by ...

Solved • Jan 27, 2021

Coulomb's Law (Electric Force)

#### Q. A negatively charged rod is brought near a neutral metal sphere. Which of the following is true?a. There is no electric force between the rod and s...

Solved • Jan 27, 2021

Coulomb's Law (Electric Force)

#### Q. Suppose you have two small pith balls that are 7.5 cm apart and have equal charges of -25 nC? What is the magnitude of the repulsive force, in newt...

Solved • Jan 17, 2021

Coulomb's Law (Electric Force)

#### Q. Coulomb's law allows us to find the force between two point charges. Three point charges are held fixed on a straight line with equal spacing; +Q, ...

Solved • Jan 13, 2021

Coulomb's Law (Electric Force)

#### Q. A charge 4.98 nC is placed at the origin of an xy-coordinate system, and a charge -2.04 nC is placed on the positive x-axis at x = 4.02 cm . A thir...

Solved • Jan 11, 2021

Coulomb's Law (Electric Force)

#### Q. What is the magnitude of the net electric force on charge A in the figure (Figure 1)? Assume that q1 = 1.5nC and q2 = 4.8nC.

Solved • Jan 8, 2021

Coulomb's Law (Electric Force)

#### Q. 1. When two point charges are a distance d apart, the electric force that each one feels from the other has a magnitude F. In order to make this fo...

Solved • Jan 8, 2021

Coulomb's Law (Electric Force)

#### Q. Object A has a charge of +2 µC, and object B has a charge of +6 µC. Which statement is true about the electric forces on the objects?(a) FAB = -3FB...

Solved • Dec 21, 2020

Coulomb's Law (Electric Force)

#### Q. A positive point charge q1 = 2.0 uC is located at x = 0, y = 0.30 m, a negative point charge q2 = -2.0 uC is located at x = 0, y = -0.30 m. A third...

Solved • Dec 16, 2020

Coulomb's Law (Electric Force)

#### Q. Two charged particles, with charges q1 = q and q2 = 4q, are located at a distance d = 2.00cm apart on the x-axis. A third charged particle, with ch...

Solved • Dec 4, 2020

Coulomb's Law (Electric Force)

#### Q. Coulomb's law allows us to find the force between two point charges. Three point charges are held fixed on a straight line with equal spacing; +Q, ...

Solved • Nov 3, 2020

Coulomb's Law (Electric Force)

#### Q. We are usually not aware of the electric force acting between two everyday objects becausea.) most everyday objects have as many plus charges as mi...

Solved • Oct 13, 2020

Coulomb's Law (Electric Force)

#### Q. The charge of sphere 2 is twice that of sphere 1. Which vector below shows the force of 2 on 1?

Solved • Oct 13, 2020

Coulomb's Law (Electric Force)

#### Q. A charge 3q is at the origin, and a charge -2q is on the positive x-axis at x = a. Where on the x-axis would you place a third charge with charge q...

Solved • Sep 30, 2020

Coulomb's Law (Electric Force)

#### Q. In the figure below, the particles have charges q1 = -q2 = 264 nC and q3 = -q4 = 168 nC, and distance a = 5.2 cm.What are the (a)x and (b) y compon...

Solved • Sep 28, 2020

Coulomb's Law (Electric Force)

#### Q. A particle of charge 5.05 nC is placed at the origin of an xy-coordinate system, and a second particle of charge -2.04 nC is placed on the positive...

Solved • Sep 22, 2020

Coulomb's Law (Electric Force)

#### Q. A 2.5 mm -diameter sphere is charged to -4.6 nC. An electron fired directly at the sphere from far away comes to within 0.35 mm of the surface of t...

Solved • Sep 22, 2020

Coulomb's Law (Electric Force)

#### Q. In (Figure 1), charge q2 experiences no net electric force. What is q1?

Solved • Sep 22, 2020

Coulomb's Law (Electric Force)

#### Q. 1. The charge earned by one electron is e = -1.6×10-19 C. The number of electrons necessary to produce a charge of -1.0 C is A). 6.3×1018B) 1.6×109...

Solved • Sep 22, 2020

Coulomb's Law (Electric Force)

#### Q. List the differences between Coulomb's Law and Newton's Law of Gravitation.

Solved • Aug 27, 2020

Coulomb's Law (Electric Force)

#### Q. Two charges are placed on the x-axis: one of 2.5 μC at the origin and the other of -3.5μC at x =0.6 m. Find the position on the x-axis where the ne...

Solved • Jul 20, 2020

Coulomb's Law (Electric Force)

#### Q. At what distance is the electrostatic force between two protons equal to the weight of one proton?

Solved • Jul 20, 2020

Coulomb's Law (Electric Force)

#### Q. Four equal positive point charges, each of charge 5.7 µC , are at the corners of a square of side 9.2 cm. What charge should be placed at the cente...

Solved • Jul 20, 2020

Coulomb's Law (Electric Force)

#### Q. A point charge +3q is located at the origin, and a point charge -q is located on the x-axis at d = 0.5 m. At what location on the x-axis will a thi...

Solved • Jul 20, 2020

Coulomb's Law (Electric Force)

#### Q. A point charge with charge q1 is held stationary at the origin. A second point charge with charge q2 moves from the point (x1, 0) to the point (x2,...

Solved • Jul 16, 2020

Coulomb's Law (Electric Force)

#### Q. A charge +Q is located at the origin and a second charge, + 4Q, is at distance d on the X-axis.A. Where should a third charge,q , be placed, so tha...

Solved • Jul 16, 2020

Coulomb's Law (Electric Force)

#### Q. What is the repulsive force between two pith balls that are 8 cm apart and have equal charges of -30 nC?

Solved • Jul 16, 2020

Coulomb's Law (Electric Force)

#### Q. At what distance is the electrostatic force between two protons equal to the weight of one proton?

Solved • Jul 15, 2020

Coulomb's Law (Electric Force)

#### Q. Two 4.0 kg masses are 4.0 m apart on a frictionless table. Each has 1.0μC of charge. What is the acceleration in m/s2?

Solved • Jul 15, 2020

Coulomb's Law (Electric Force)

#### Q. The "size" of the atom in Rutherford's model is about 1.0 ✕ 10−10 m.(a) Determine the attractive electrostatic force between an electron and a prot...

Solved • Jul 14, 2020

Coulomb's Law (Electric Force)

#### Q. A simple and common technique for accelerating electrons is shown in Figure 18.55, where there is a uniform electric field between two plates. Elec...

Solved • Jul 14, 2020

Coulomb's Law (Electric Force)

#### Q. What is the force F on the 1.0 nC charge in the middle of the figure due to the four other charges? Give your answer in component form.Assume that ...

Solved • Jul 14, 2020

Coulomb's Law (Electric Force)

#### Q. List the similarities between Coulomb's Law and Newton's Law of Gravitation.

Solved • Jul 14, 2020

Coulomb's Law (Electric Force)

#### Q. Which is the direction of the net force on the charge at the lower left?

Solved • Jul 14, 2020

Coulomb's Law (Electric Force)

#### Q. At each corner of a square of side l there are point charges of magnitude Q, 2Q, 3Q, and 4Q.a. Determine the magnitude of the force on the charge 2...

Solved • Jul 14, 2020

Coulomb's Law (Electric Force)

#### Q. Three identical charges q are placed at each of three corners of a square of side L. Find the magnitude of the net force on a point charge -3q plac...

Solved • Jul 13, 2020

Coulomb's Law (Electric Force)

#### Q. Two identical small charged spheres are a certain distance apart, and each one initially experiences an electrostatic force of magnitude F due to t...

Solved • Jun 11, 2020

Coulomb's Law (Electric Force)

#### Q. Two tiny beads are 25 cm apart with no other charges or fields present. Bead A carries 10 μC of charge and bead B carries 1 μC. Which one of the fo...

Solved • Jun 11, 2020

Coulomb's Law (Electric Force)

#### Q. The figure shows four charges at the corners of a square of side L. Assume q and Q are positive.What is the magnitude of the net force on q?Give yo...

Solved • Jun 2, 2020

Coulomb's Law (Electric Force)

#### Q. In the diagram below, there are three collinear point charges: q1, q2, and q3. The distance between q1 and q2 is the same as that between q2 and q3...

Solved • Jun 2, 2020

Coulomb's Law (Electric Force)

#### Q. There is a force between two charged objects. To decrease the magnitude of the force, we can: A. Move the objects farther from each other or increa...

Solved • Jun 2, 2020

Coulomb's Law (Electric Force)

#### Q. The dipole moment of the water molecule (H2O)is 6.17×10−30 C⋅m. Consider a water molecule located at the origin whose dipole moment p points in the...

Solved • Jun 2, 2020

Coulomb's Law (Electric Force)

#### Q. A 2.4 nC charge is at the origin and a -4.8 nC charge is at x = 1.1 cm .Part AAt what x -coordinate could you place a proton so that it would exper...

Solved • Jun 2, 2020

Coulomb's Law (Electric Force)

#### Q. An electron and a proton are each moving at 795 km/s in perpendicular paths as shown in (Figure 1) .Part AFind the magnitude of the total electrica...

Solved • May 29, 2020

Coulomb's Law (Electric Force)

#### Q. What is the magnitude of the force F on the 5.0 nC charge in the figure? What is the direction of the force F on the 5.0 nC charge in the figure?

Solved • May 27, 2020

Coulomb's Law (Electric Force)

#### Q. Three point charges are arranged on a line:Charge q3 = +5.00×10-9 C and is at the origin.Charge q2 = −3.00×10-9 C and is at x = +4.00cm. Charge q1 ...

Solved • May 26, 2020

Coulomb's Law (Electric Force)

#### Q. At what distance is the electrostatic force between two electrons equal to the weight of one?

Solved • May 26, 2020

Coulomb's Law (Electric Force)

#### Q. (a) In Figure 18.59, four equal charges q lie on the corners of a square. A fifth charge Q is on a mass m directly above the center of the square, ...

Solved • May 21, 2020

Coulomb's Law (Electric Force)

#### Q. A charge 5.02 nC is placed at the origin of an xy-coordinate system, and a charge -2.05 nC is placed on the positive x-axis at x = 4.00cm. A third ...

Solved • May 19, 2020

Coulomb's Law (Electric Force)

#### Q. Two 4.0 kg masses are 2.0 m apart on a frictionless table. Each has 1.0 μC of charge. What is the magnitude of the electric force on one of the mas...

Solved • May 19, 2020

Coulomb's Law (Electric Force)

#### Q. In the figure, the point charges are located at the corners of an equilateral triangle 22 cm on a side.A.)What is the magnitude of the force in N o...

Solved • May 18, 2020

Coulomb's Law (Electric Force)

#### Q. In the late 19th century, great interest was directed toward the study of electrical discharges in gases and the nature of so-called cathode rays. ...

Solved • May 6, 2020

Coulomb's Law (Electric Force)

#### Q. Two charged particles, with charges q1 = q and q2 = 4q, are located at a distance d = 2.00cm apart on the x-axis. A third charged particle, with ch...

Solved • May 6, 2020

Coulomb's Law (Electric Force)

#### Q. Consider a uniformly charged ring in the xy plane, centered at the origin. The ring has radius α and positive charge q distributed evenly along its...

Solved • May 1, 2020

Coulomb's Law (Electric Force)

#### Q. A 2.6 mm -diameter sphere is charged to -4.6 nC . An electron fired directly at the sphere from far away comes to within 0.37 mm of the surface of ...

Solved • Apr 30, 2020

Coulomb's Law (Electric Force)

#### Q. Free charges do not remain stationary when close together. To illustrate this, calculate the magnitude of the instantaneous acceleration, in meters...

Solved • Apr 29, 2020

Coulomb's Law (Electric Force)

#### Q. Two charged balls, one with a charge of +5.0  μC and the other with a charge of +2.4 μC, are placed a distance d = 10.0 cm apart from each other an...

Solved • Apr 27, 2020

Coulomb's Law (Electric Force)

#### Q. The magnitude of the electric force between two protons is 2.3 x 10-26 N. How far apart are they?a) 1b) 0.10 mc) 0.0057 m    d) 0.48 me) 0.022 mf) ...

Solved • Apr 22, 2020

Coulomb's Law (Electric Force)

#### Q. Three point charges are arranged as shown in Figure. (a) Find the vector electric field that the q = 7.50 nC and -3.00 nC charges together create a...

Solved • Apr 22, 2020

Coulomb's Law (Electric Force)

#### Q. Four equal positive point charges q are fixed to the corners of a horizontal square. A fifth positive point charge Q is on a free particle of mass ...

Solved • Apr 22, 2020

Coulomb's Law (Electric Force)

#### Q. Consider three plastic balls (A, B, and C), each carrying a uniformly distributed charge equal to either +Q, -Q or zero, and an uncharged (neutral)...

Solved • Apr 13, 2020

Coulomb's Law (Electric Force)

#### Q. As shown in the figure, there are 3 point charges along the x-axis located at 3, 8, and 11 cm.What is the x-component of the force on the charge lo...

Solved • Apr 10, 2020

Coulomb's Law (Electric Force)

#### Q. The net force on the 1.0 nC in the figure charge is zero.  What is q?

Solved • Apr 10, 2020

Coulomb's Law (Electric Force)

#### Q. Two small aluminum spheres, each of mass 0.0250 kilograms, are separated by 80.0 centimeters.a. How many electrons does each sphere contain? (The a...

Solved • Apr 9, 2020

Coulomb's Law (Electric Force)

#### Q. What is the magnitude of the force F on the 1.0 nC charge in the figure?

Solved • Apr 8, 2020

Coulomb's Law (Electric Force)

#### Q. Part AWhat is the strength of an electric field that will balance the weight of a proton?Part BWhat is the direction of an electric field that will...

Solved • Apr 8, 2020

Coulomb's Law (Electric Force)

#### Q. Two identical metal balls are suspended by insulating threads. Both balls have the same net charge. In this problem, do not assume the balls are po...

Solved • Apr 8, 2020

Coulomb's Law (Electric Force)

#### Q. Three point charges are arranged along the x-axis. Charge q1 = 3 mc is at the origin and charge q2 = -5 mc is at x = 0.2 m. Charge q3 = -8.00 mc.Wh...

Solved • Apr 7, 2020

Coulomb's Law (Electric Force)

#### Q. Two small spheres spaced 20.0 cm apart have equal charge.How many excess electrons must be present on each sphere if the magnitude of the force of ...

Solved • Apr 7, 2020

Coulomb's Law (Electric Force)

#### Q. An atomic nucleus has a charge of +40e. An electron is 10-9 m from the nucleus. What is the force on the electron?A) 2.9 nN B) 9.2 nNC) 3.7 nN D) 1...

Solved • Apr 3, 2020

Coulomb's Law (Electric Force)

#### Q. The force of attraction between a -40.0 μC and + 108 μC charge is 4.00 N. What is the separation between these two charges?A) 1.13 m B) 2.10 m C) 3...

Solved • Apr 3, 2020

Coulomb's Law (Electric Force)

#### Q. What is the force F? on the 1.0 nC charge in (Figure 1)?A) Determine the magnitude of the force.B) Determine the direction of the force.

Solved • Mar 11, 2020

Coulomb's Law (Electric Force)

#### Q. A. What is the magnitude of the electric force on charge A in the figure?F=______NB. What is the direction of the electric force on charge A in the...

Solved • Mar 11, 2020

Coulomb's Law (Electric Force)

#### Q. (Figure 1) shows four charges at the corners of a square side L.What magnitude and sign of charge Q will make the force on charge q zero?

Solved • Mar 10, 2020

Coulomb's Law (Electric Force)

#### Q. An alpha particle with charge +2.0 e is sent at high speed toward a silver nucleus with charge +47e. What is the electric force acting on the alpha...

Solved • Jun 20, 2017

Coulomb's Law (Electric Force)

#### Q. Three charges are positioned as indicated in the figure. What are the horizontal and vertical components of the net force exerted on the +15 µC cha...

Solved • Jun 18, 2017

Coulomb's Law (Electric Force)

#### Q. Three point charges +3 μC, +4 μC, and -7 μC are placed along the x and y axis with the values and positions shown. What is the net force, magnitude...

Solved • May 29, 2017

Coulomb's Law (Electric Force)

#### Q. Two identical spheres A and B carry charges Q and 2Q, respectively. They are separated by a distance much larger than their diameters. A third iden...

Solved • May 1, 2017

Coulomb's Law (Electric Force)

#### Q. Five charges are equally spaced along the x axis. Each charge has the same magnitude e, but some of the charges are +e and some are −e. Four differ...

Solved • May 1, 2017

Coulomb's Law (Electric Force)

#### Q. A positive test charge q is released near a positive fixed charge Q. As q moves away from Q, it will move with  A) constant velocity. B) constant...

Solved • Apr 18, 2017

Coulomb's Law (Electric Force)

#### Q. A charge q1 = -18.0 nC hangs from a string. It has a mass of 2.9 g. A second charge of q2 = 53.7 nC is brought to a distance of 2.3 cm from q 1. Fi...

Solved • Mar 29, 2017

Coulomb's Law (Electric Force)

#### Q. A positive charge Q is fixed on a very large horizontal frictionless tabletop. A second positive point charge q is released from rest near the stat...

Solved • Jan 4, 2017

Coulomb's Law (Electric Force)

#### Q. Two identical small charged spheres are a certain distance apart, and each one initially experiences an electrostatic force of magnitude F due to t...

Solved • Jan 4, 2017

Coulomb's Law (Electric Force)

#### Q. Two charges q1 and q2 are separated by a distance d and exert a force F on each other. What is the new force F ′ , if charge 1 is increased to  q ′...

Solved • Jan 4, 2017

Coulomb's Law (Electric Force)

#### Q. Two charged particles of equal magnitude (−Q and +Q) are fixed at opposite corners of a square that lies in a plane (see figure below). A test char...

Solved • Jan 3, 2017