00:01
Hello and welcome to chapter 1, problem number 15 in physics for scientists and engineers with modern physics.
00:07
So this problem gives us some information about a piece of lead and asks us to calculate the density in standard si units.
00:16
So the catch in this problem is that the dimensions that they give us or the information they give us about this piece of lead is in the wrong dimension.
00:25
Not necessarily the wrong, but it's not exactly in the si units.
00:28
So we're given that the mass is 23 .94 grams, and the volume is 2 .1 centimeters cubed.
00:37
So we have the conversions over here to the right in red and green.
00:42
So we're going to have 1 ,000 grams is 1 kilogram, but the catch here is remembering that we have centimeters cubed for our volume.
00:50
So it's not just simply 100 centimeters is equal to 1 meter.
00:53
When our units are cubed, so must be the number itself.
00:56
So much be the number itself...