I needed help in answering nos. 13-16..Thank you 13. Which of the following is shown by the spacing between field lines?A. their directionB. their positionC. their strengthD. both A and B14. How are charges of larger magnitude built up in an object?A. by adding electronsB. by removing electrons15. If the distance between two charged bodies is increased four times its original value, which willC. by adding protonsD. either a or bbe the magnitude of the force they exerted?C. four times of its original valueD. one - sixteenth of its original valueA. one - fourth of its original valueB. one - eighth of its original value16. Which of the following determines the magnitude of the force exerted by two charged bodies?A. type of charge and the distance between themB. amount of charge and their directionC. type of charge and the magnitude of their massesD. amount of charge and the distance between them

By concept of field lines and coulombs law

13. Which of the following is shown by the spacing between field lines? A. their direction B. their position C. their strength D. both A and B 14. How are charges of larger magnitude built up in an object? A. by adding electrons B. by removing electrons 15. If the distance between two charged bodies is increased four times its original value, which will e magnitude of the force they exerted? A. one - fourth of its original value B. one - eighth of its original value 16. Which of the following determines the magnitude of the force exerted by two charged bodies? A. type of charge and the distance between them B. amount of charge and their direction C. type of charge and the magnitude of their masses D. amount of charge and the distance between them C. by adding protons D. either a or b C. four times of its original value D. one- sixteenth of its original value

13. Which of the following is shown by the spacing between field lines? A. their direction B. their position C. their strength D. both A and B 14. How are charges of larger magnitude built up in an object? A. by adding electrons B. by removing electrons 15. If the distance between two charged bodies is increased four times its original value, which will e magnitude of the force they exerted? A. one - fourth of its original value B. one - eighth of its original value 16. Which of the following determines the magnitude of the force exerted by two charged bodies? A. type of charge and the distance between them B. amount of charge and their direction C. type of charge and the magnitude of their masses D. amount of charge and the distance between them C. by adding protons D. either a or b C. four times of its original value D. one- sixteenth of its original value

College Physics

1st Edition

ISBN:9781938168000

Author:Paul Peter Urone, Roger Hinrichs

Publisher:Paul Peter Urone, Roger Hinrichs

Chapter18: Electric Charge And Electric Field

Section: Chapter Questions

Problem 61PE: Integrated Concepts Figure 18.57 shows an electron passing between two charged metal plates that...

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Integrated Concepts Figure 18.57 shows an electron passing between two charged metal plates that create an 100 N/C vertical electric field perpendicular to the electron's original horizontal velocity. (These can be used to change the electron’s direction, such as in an oscilloscope.) The initial speed of the electron is 3.00106 m/s, and the horizontal distance it travels in the uniform field is 4.00 cm. (a) What is its vertical deflection? (b) What is the vertical component of its final velocity? (c) At what angle does it exit? Neglect any edge effects.
Integrated Concepts An electron has an initial velocity of 5.00106m/s in a uniform 2.00105N/C strength electric field. the field accelerates the electron in the direction opposite to its initial velocity. (a) What is the direction of the electric field? (b) How far does the electron travel before coming to rest? (c) How long does it take the electron to come to rest? (d) What is the electron’s velocity when it returns to its starting point?
Using the symmetry of the arrangement, determine the direction of the force on q in the figure below, given that qa=qb=+7.50C and qc = qd = 7.50C. (b) Calculate the magnitude of the force on the charge q, given that the square is 10.0 cm on a side and q = 2.00 C.
An object with negative charge is placed in a region of space where the electric field is directed vertically upward. What is the direction of the electric force exerted on this charge? (a) It is up. (b) It is down. (c) There is no force. (d) The force can be in any direction.
A particle having a positive charge of C experiences an upward force of 8 N when placed at a certain location in space. What is the magnitude and direction of the electric field at that point? What would be different about your answer if the particle possessed a negative charge of C?
Why do most objects tend to contain nearly equal numbers of positive and negative charges?
An electron is accelerated by a constant electric field of magnitude 300 N/C. (a) Find the acceleration of the electron. (b) Use the equations of motion with constant acceleration to find the electrons speed after 1.00 108 s, assuming it starts from rest
Compare and contrast the Coulomb force field and the electric field. To do this, make a list of five properties for the Coulomb force field analogous to the five properties listed for electric field lines. Compare each item in your list of Coulomb force field properties with those of the electric field—are they the same or different? (For example, electric field lines cannot cross. Is the same true for Coulomb field lines?)
(a) Find the direction and magnitude of an electric field that exerts a 4.801017 N westward force on an electron (b) What magnitude and direction force does this field exert on a proton?
(a) Two point charges q1 and q23.00 m apart, and their total charge is 20 C. (a) If the force of repulsion between them is 0.075N, what are magnitudes of the two charges? (b) If one charge attracts the other with a force of 0.150 N, what are the magnitudes of the two charges? Note that you may need to solve a quadratic equation to reach your answer.
(a) Using the symmetry of the arrangement, show that the electric field at the center of the square in figure 18.46 is zero if the charges on the four comers are exactly equal. (b) Show that this is also true for any combination of charges in which qa= qd and qa = qc
A Van de Graaff generator is charged so that a proton at its surface accelerates radially outward at 1.52 1012 m/s3. Find (a) the magnitude of the electric force on the proton at that instant and (b) the magnitude and direction of the electric field at the surface of the generator.