Tuesday, December 16, 2008

How Dense is it?

Today during block we will explore what density is. How do you calculate density?

Remember the triangle? Well, the triangle works for Density equations also.
D= Density M=Mass V=Volume

Example: If a bar of gold has a mass of 38 g and a density of 19 g/cm3, what is the volume of the bar of gold?

Equation: Volume = mass/density

Volume = 38 g = 2 cm3
________
19g/cm3



Homework
p. 131 Do practice problems 1-2 Show Work!


Remember, when the amount of water displaced has the same weight as the object in the water it floats in the middle. This is called neutral buoyancy.