The fact that a pin placed carefully on the surface of the water can remain there without sinking is best explained by
A) gravitation.
B) gauge pressure.
C) surface tension.
D) Archimedes' principle.
E) viscosity.

Question

Quizplus · Accepted Answer

The surface tension of the water is what allows the pin to remain on top of the water. Surface tension is the cohesive force between the water molecules at the surface, creating a sort of "skin" that resists penetration by the pin.

The Fact That a Pin Placed Carefully on the Surface