An egg is placed at the bottom of a bowl filled with water.Salt is slowly added to the water until the egg rises and floats.From this experiment,one concludes
A)calcium in the egg shell is repelled by sodium chloride.
B)the density of salt water exceeds the density of egg.
C)buoyant force does not always act upward.
D)salt sinks to the bottom.

Question

Quizplus · Accepted Answer

The experiment demonstrates that the density of the saltwater exceeds the density of the egg, which causes the egg to float. The buoyant force acts upward, but the egg rises because the force of the saltwater's density is greater than the force of gravity on the egg. The experiment does not provide evidence for options A and D. Option C is not a valid conclusion from the experiment because the buoyant force always acts upward in liquids regardless of whether an object sinks or floats.

An Egg Is Placed at the Bottom of a Bowl