A common 5-liter metal can will float in air if it is
A)evacuated of air.
B)filled with a very large amount of helium.
C)thrown high enough.
D)no way, unless the displaced air weighs more than the can and its contents!

Question

Quizplus · Accepted Answer

The can will only float in air if the weight of the displaced air is greater than the combined weight of the can and its contents according to the Archimedes' principle. Evacuating the air or filling it with helium will not change the weight of the can and its contents, and throwing it high enough will not affect its buoyancy in air.

A Common 5-Liter Metal Can Will Float in Air If