A cup of water containing an ice cube at 0°C is filled to the brim.The tip of the ice cube sticks out of the surface.As the ice melts,you observe that
A) the cup overflows.
B) the cup might overflow but it depends on the actual mass of the ice cube.
C) the water level remains the same.
D) the water level actually goes down.
E) There is not enough information to answer this question.

Question

Quizplus · Accepted Answer

When the ice cube melts, its volume (as water) is equal to the volume of the submerged portion of the ice cube. Since the ice was already at the brim of the cup, the water level will not rise any further. Therefore, the water level remains the same.

A Cup of Water Containing an Ice Cube at 0°C