Author Question: The fact that a pin placed carefully on the surface of the water can remain there without sinking is ... (Read 32 times)

brutforce · **on:** Jul 29, 2018

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 2

The critical angle for a beam of light passing from water into air is 48.8. This means that all light rays with an angle of incidence greater than this angle will be

A) absorbed.
B) totally reflected.
C) partially reflected and partially transmitted.
D) totally transmitted.
E) totally polarized.