[coolfield7]

Hi, I had some questions related to density. In my Physics book it says, for example, aluminum has the density of 2700 kg/m3(squared) and 2.7 g/cm3(squared). Won't there be more then just 2.7 grams packed into cm3? How is this calculated?

I'm also not understanding how 1 g/cm3 can be equal to 1000 kg/m3. I've seen the formula but how is this physically possible?

My last question is, how is 1 kg/m3 equal to 10,000 kg/cm3?

My brain is really boggled by these, it would be great if you could explain them.

Thanks you!

[Reinvented25]

It has to do with changes being made to each side of the ratio...

2700 kg/m^3 =
2,700,000 g/m^3 =
2.7 g/cm^3

Multiply by 1000 to convert from kg/m^3 to g/m^3.
[1 kg = 1000 g]

Divide by 1,000,000 to convert from g/m^3 to g/cm^3
[1 cubic meter = 1 million cubic centimetres]

Hope that helps, but if not let me know!

[coolfield7]

It has to do with changes being made to each side of the ratio...

2700 kg/m^3 =
2,700,000 g/m^3 =
2.7 g/cm^3

Multiply by 1000 to convert from kg/m^3 to g/m^3.
[1 kg = 1000 g]

Divide by 1,000,000 to convert from g/m^3 to g/cm^3
[1 cubic meter = 1 million cubic centimetres]

Hope that helps, but if not let me know!

Ok I get it! Thanks a lot!