Chapter 16 Flashcards
Is it possible for two negative charges to attract each other?
no, they will never attract
A neutral atom always has ________
the same number of protons as electrons
A negatively charged rod is brought near one end of an uncharged metal bar. The end of the metal bar farthest from the charged rod will be charged ________
negative
What are the units of the constant k which appears in Coulomb’s law?
N * m2/C2
Two charged objects are separated by a distance d. The first charge is larger in magnitude than the second charge. Which of the following statements is true?
the charges exert forces on each other equal in magnitude and opposite in direction
Two charged objects attract each other with a certain force. If the charges on both objects are doubled while the distance between them is held constant, the force between them _______`
quadruples
Two charges are separated by a distance d and exert mutual attractive forces of F on each other. If the charges are moved to a distance of d/3 apart, what are the new mutual forces?
9F
increases to the right
9.2 nN
Two point charges, separated by 1.5 cm, have charge values of 2.0 µC and -4.0 µC, respectively. What is the magnitude of the electric force between them?
320 N
What are the magnitude and direction of the electric field at a distance of 1.50 m from a 50.0-nC charge?
200 N/C away from the charge
A 5.0-µC charge is placed at the 0 cm mark of a meter stick and a -4.0-µC charge is placed at the 50 cm mark. What is the magnitude of the electric field at the 30 cm mark?
Two point charges of +3.0 µC and -7.0 µC are placed at x = 0 and x = 0.20 m. What is the magnitude of the electric field at the point midway between them?
Two 1.0-C charges have a force between them of 1.0 N. How far apart are they?
95 km
