Aluminum has a positive coefficient of thermal expansion. Consider a round hole that has been drilled in a large sheet of aluminum. As the temperature increases and the surrounding metal expands, the hole diameter will
A) increase.
B) decrease.
C) remain constant.
D) depends how much metal surrounds the hole
Question 2
A hunter points a rifle horizontally 3.30 m above the ground. The bullet leaves the barrel at 325. m/s.
(a) How long did it take for the bullet to strike the ground?
(b) How far horizontally did it travel?