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Coulomb's Law (Electric Force) Solutions Library

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41 solutions

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? Q = 

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