Alight-year is a unit of
a. time.
c. mass.
b. distance.
d. density.

Atotal charge of –6.50 µc is uniformly distributed within a sphere that has a radius of 0.150 m. what is the magnitude and direction of the electric field at 0.300 m from the surface of the sphere? a) 2.89 × 105 n/c, radially inward b) 6.49 × 105 n/c, radially outward c) 4.69 × 105 n/c, radially inward d) 9.38 × 105 n/c, radially outward e) 1.30 × 106 n/c, radially inward

When you push downward on a book at rest on a table, you feel an upward force. does this force depend on friction? defend your answer.

Select the three ways that the parallel-plate capacitor differs from a car battery.