a submarine has a water tank. when the tank is filled then submarine sink in the water. and when the tank is empty then submarine float in water.
use the formula density= mass / volume
as mass increases(when the tank is full of water), the density of the submarine increases and it submerge into the water and vice versa.
I have a marker which float in water.
They use ballast tanks to contain sea water or air to control their depth
does Arsenic float or sink
it will float as long as it is not fully covered water.
scoria will sink but pumice will float.
Yes and no. Rubber bands can float and sink in water. They will float on the water for awhile and then will sink. But not all the time the rubber bands will float on the water for awhile. Sometimes it will immediately sink.
Submarines change their depth by use of ballast tanks. To dive, they open their tanks so that they become filled with water. They also angle their dive planes. To surface, they pump the water out of their tanks and fill them with pressurised air.
float
Float.
A needle sink in water.
Promethium sink in water.
Silicon will sink in water.