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Coulomb's Law (Electric Force) Solutions Library

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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 there are point charges of magnitude Q, 2Q, 3Q, and 4Q.a. Determine the magnitude of the force on the charge 2Q....

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

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

Coulomb's Law (Electric Force)

Q. Three charges are placed at the following (x, y) coordinates: charge + 6.0x10  -6 C at (0, 0.5 m), charge + 2.0x10 -6 C at (0.7, 0 m), and charge -...

Solved • Jan 3, 2017

Coulomb's Law (Electric Force)

Q. An oil droplet with 4 excess electrons is held stationary in a field of 1.27x10  4 N/C. What is the radius of the oil drop? (The density of the oil...

Solved • Jan 3, 2017

Coulomb's Law (Electric Force)

Q. Four charges −5×10−9 C at (0m, 0m), −8×10−9 C at (1m, 5m), 9×10−9 C at (3m, 1m), and 7×10−9 C at (3m, −3m), are arranged in the ( x, y ) plane (as ...

Solved • Dec 28, 2016

Coulomb's Law (Electric Force)

Q. Two identical small charged spheres hang in equilibrium with equal masses as shown in the figure. The length of the strings are equal and the angle...

Solved • Dec 28, 2016

Coulomb's Law (Electric Force)

Q. Four charges are arranged as shown in the figure below each with a positive (red) charge or a negative (blue) charge. Find the net total force (mag...

Solved • Dec 27, 2016

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) increasing acceleration. B) con...

Solved • Dec 27, 2016

Coulomb's Law (Electric Force)

Q. A point charge Q = -12 μC, and two other charges, q 1 and q2, are placed as shown. The electric force components on charge Q are Fx = +0.005 N and ...

Solved • Dec 26, 2016

Coulomb's Law (Electric Force)

Q. Electrical and gravitational forces follow similar equations with one main difference: A) Gravitational forces obey the inverse square law and ele...

Solved • Dec 26, 2016

Coulomb's Law (Electric Force)

Q. What is the magnitude of an electric field that balances the weight of a plastic sphere of mass 2.2 g that has been charged to -3.0 nC? A) 7.2x106...

Solved • Dec 26, 2016

Coulomb's Law (Electric Force)

Q. Two equally charged spheres of mass 1.0 g are placed 2.0 cm apart. When released, they begin to accelerate at 779 m/s2. What is the magnitude of th...

Solved • Dec 26, 2016

Coulomb's Law (Electric Force)

Q. At what separation will two charges, each of magnitude 6.0 μC, exert a force of 0.70 N on each other? A) 1.1 x 10-5 m B) 0.23 m C) 0.48 m D) 0....

Solved • Dec 23, 2016

Coulomb's Law (Electric Force)

Q. Three identical point charges, Q = 3μC, are placed at the vertices of an equilateral triangle as shown in the figure. The length of each side of th...

Solved • Dec 23, 2016

Coulomb's Law (Electric Force)

Q. Three charges, q1, q2 and q3 are placed left to rigth in a straight line. The distance between q1 and q2  is twice the distance between q 2 and q3....

Solved • Dec 22, 2016

Coulomb's Law (Electric Force)

Q. Two point charges of +60.0 μC and -12.0 μC are separated by a distance of 20.0 cm. A +7.00 μC charge is placed midway between these two charges. Wh...

Solved • Dec 21, 2016

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 mB) 3.67 mC) 3.12...

Solved • Dec 21, 2016

Coulomb's Law (Electric Force)

Q. Two charges, Q1 and Q2, are separated by a certain distance R. If the magnitudes of their charges are doubled and their separation is halved, then ...

Solved • Dec 21, 2016

Coulomb's Law (Electric Force)

Q. Two small beads having charges q1 = +9Q and q2 = -Q are fixed on a horizontal insulating rod. The distance between q1 and q2 is d = 1.5 m  The thir...

Solved • Dec 21, 2016

Coulomb's Law (Electric Force)

Q. An equilateral triangle  ABC. A positive point charge +q is located at each of the three vertices A, B, and C. Each side of the triangle is of leng...

Solved • Dec 21, 2016

Coulomb's Law (Electric Force)

Q. Two positive point charges Q and 2Q are separated by a distance R. If the charge Q experiences a force of magnitude F when the separation is R, wha...

Solved • Dec 21, 2016

Coulomb's Law (Electric Force)

Q. Two identical,  0.25 μC charges hang from the end of electroscope leaves. If, in equilibrium, the electroscope leaves deflect from one another to a...

Solved • Dec 20, 2016

Coulomb's Law (Electric Force)

Q. What is the net electric force on the 1 C charge? Consider the 1 C to placed directly in the center of the arrangement.  

Solved • Dec 20, 2016

Coulomb's Law (Electric Force)

Q. What is the difference between the electric force on a charge q when moved from a distance d to a distance 3d. Consider the initial electric force ...

Solved • Dec 20, 2016

Coulomb's Law (Electric Force)

Q. Find the magnitude and direction of the net electrostatic force on q 1 due to q 2 and q3 as shown in the figure. The charges are q 1 = +4.0 μC, q2 ...

Solved • Dec 20, 2016

Coulomb's Law (Electric Force)

Q. A dipole with negative charge of -5.0 x 10 -6 C on the x-axis at x = -3.0 cm, and a positive charge of 5.0 x 10-6 C on the x-axis at  x = + 3.0 cm....

Solved • Dec 19, 2016