Reading...
Play button
Play button
Use LEFT and RIGHT arrow keys to navigate between flashcards;
Use UP and DOWN arrow keys to flip the card;
H to show hint;
A reads text to speech;
9 Cards in this Set
- Front
- Back
|
16.1---Calculate the magnitude of the repulsive force between a pair of like charges, each of one microcoulomb, separated by a distance of one centimeter.
|
90 N
|
|
|
16.3---Two equal charges of 3.7 uC are placed a distance x apart. What must be the value of x if the force between the charges is 4 x 10^-8 N?
|
1.8 km
|
|
|
16.7---Two charged Styrofoam balls are moved so that the force between them becomes twelve times greater than it was originally. What is the ratio of their new separation to their original separation?
|
0.29
|
|
|
16.11---Two conducting spheres of the same size have charges Q(1)= -4.0 x 10^-6 C and Q(2)= +8.0 x 10^-6 C, and their centers are separated by 3.0 cm. (a) What is the force between them? (b) What would be the force if the spheres were touched together and again separated by the same distance?
|
a.) -320 N, attractive
b.) 40 N, repulsive |
|
|
16.19---Four equal point charges +q are placed at the corners of a square of edge length L. Find the force on any one of the charges.
|
(square root of 2 + 1/2) k q^2 / L^2, diagonally outward
|
|
|
16.23--- a proton of charge q = 1.60 x 10^-19 C is placed in a region of uniform electric field with field strength E = 1.46 x 10^5 N/C. What is the electric force on the proton?
|
2.3 x 10^-14 N
|
|
|
16.38--- An electric field of 11.6 N/C directed due north is superposed on an existing electric field of 16.9 N/C directed due east. What are the magnitude and the direction of ht resultant field?
|
magnitude = 20.5 NC
direction = 34.5 degrees |
|
|
16.63---How far apart must two protons be if the Coulomb force between them is equal to the weight of a single proton at the earth's surface? Assume that the two protons are far removed from any other charges. The charge of the proton. The charge of the proton is 1.60 x 10^-19 C, and its mass is 1.67 x 10^-27 kg.
|
0.119m
|
|
|
16.65--Four point charges with magnitude 5.0 uC are placed at the corners of a square that is 30 cm on a side. Two charges, diagonally opposite each other, are positive, and the other two sides are negative. What are the magnitude and the direction of the force on one of the charges?
|
2.3 N diagonally inward
|
