The depth to which an inverted drinking glass must be pushed beneath the surface of water so that the volume of enclosed air is squeezed to half is
A) 76 cm.
B) 29.4 m.
C) 10.3 m.
D) 20.6 m.
E) 14.7 m.

Question

Quizplus · Accepted Answer

According to Boyle's Law, the pressure and volume of a gas are inversely proportional. To compress the air to half its volume, the pressure must double. At sea level, atmospheric pressure is equivalent to 10.3 meters of water, so the glass must be submerged to 10.3 meters to double the pressure and halve the volume.

The Depth to Which an Inverted Drinking Glass Must Be