00:01
When an object is immersed in a fluid that experiences an upward force called buoyant force, which is solved as the product of density of the fluid, times the acceleration due to gravity g, and volume that is displaced by the object.
00:14
In this problem, we're given that with a sample that weighs 275 neutrons in air, but apparently weighs lower at 195 neutrons when submerged in alcohol with a specifically gravity of 0 .7.
00:27
We want to know the volume of the sample in cubic meters.
00:30
And for that there be the density.
00:34
We note that in alcohol where the sample will be submerged, the buoyant force is the difference between the actual weight of 275 and apparent weight of 195.
00:50
Thus the amount of buoyant force is equal to 80 neutrons.
00:58
This is equal to the product of the density of the fluid.
01:04
Intrusion to gravity and the volume that is displaced.
01:07
Density of the fluid, given with the specific gravity, is going to be solved as the specific gravity times the density of water, as our reference.
01:22
Density of water is 1000.
01:25
Therefore, density of alcohol, our fluid here, is equal to 700 kilograms per cubic meter.
01:33
The volume that is displaced, if the object is totally submerged in the fluid, is the same as the volume of the object itself...