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    coolfield7's Avatar
    coolfield7 Posts: 21, Reputation: 1
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    #1

    Nov 12, 2013, 03:56 AM
    Hi, I have some questions related to density.
    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's Avatar
    Reinvented25 Posts: 7, Reputation: 3
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    #2

    Nov 12, 2013, 04:33 AM
    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's Avatar
    coolfield7 Posts: 21, Reputation: 1
    New Member
    		  
    #3

    Nov 12, 2013, 08:20 AM
    Quote Originally Posted by Reinvented25 View Post
    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!
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