00:01
Hello and welcome to chapter 1, problem 24 in physics for scientists and engineers with modern physics.
00:08
So this problem gives us the dimensions of a certain room and the density of air.
00:13
And it asks us two different questions about it.
00:16
So first thing i have is we're going to eventually convert from meters to feet and vice versa.
00:22
So we have our conversion down here.
00:24
One meter is 3 .28084 feet.
00:30
And so we also have a rudimentary design of our room over here.
00:33
So first thing is what we asked us to calculate is the volume of the room in cubic feet.
00:40
So we can go about this two different ways.
00:42
We can convert these lengths individually here into feet and then do our volume calculation, or we can do our volume calculation in meters and then convert to feet at the end.
00:54
The only thing if we do that, though, is to remember when we have a cubic, when we have a cubic unit, the conversion factor must also be cubed.
01:03
So in this case, one meter would be this 3 .28084 cubed, feet cubed...