Two metal spheres are made of the same material and have the same diameter, but one is solid and the other is hollow. If their temperature is increased by the same amount,
A) the solid sphere becomes bigger than the hollow one.
B) the hollow sphere becomes bigger than the solid one.
C) the two spheres remain of equal size.
D) the solid sphere becomes heavier and the hollow one lighter.
E) the solid sphere becomes lighter and the hollow one heavier.

Question

Quizplus · Accepted Answer

The two spheres have the same material and diameter, which means they have the same coefficient of thermal expansion. This means they will expand by the same amount when their temperature is increased. Therefore, their size will remain the same.

Two Metal Spheres Are Made of the Same Material and Have