The tail of a comet is longest when the comet is
a. closest to the Sun.
b. farthest from the Sun.
c. closest to Earth.
d. farthest from Earth.
Question 2
An object that is negatively charged will
a. repel a rubber rod stroked with fur.
b. repel a glass rod stroked with silk.
c. be polarized.
d. none of these