00:01
Tensity is the property of the material that is solved as the ratio of the mass and the volume.
00:07
So we have t as the density, m is the mass, v is the volume.
00:12
In this problem, we're given with a spherical star that has an average radius of 7 .0 times 10 to the power of 5 kilometers.
00:27
The average mass is 2 times 10 to the power of 36 kilograms.
00:32
So 2 times 10 to the 36.
00:38
We wish to find the average density of this star and express it in the unit of gram per cubic centimeter.
00:52
So let us start by expressing the given radius and mass in terms of centimeter and grams respectively.
01:04
7 .7 times 10 to the power of 5 kilometers will be converted into centimeters.
01:10
By first noting that 1 kilometer is 1 ,000 meter and then 1 meter is equivalent to 100 cm so we wrote it this way because we get to cancel the kilometer and meter and get the unit which we desired as centimeter so solving this gives us the ranges in terms of cm a 7 times 10 to the power of 10 next is the mass we're going to express the mass in terms of grams so the mass is 2 times 10 to the power of 36 kilograms...