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Math Help - finding mass from density

  1. #1
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    finding mass from density

    i know that density=mass/volume. so m=d*v. but i want to find the mass of something that has a density of 100kg per m^3. so is the mass just 100kg then? that seems too simple...
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  2. #2
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    Quote Originally Posted by isuckatcalc View Post
    i know that density=mass/volume. so m=d*v. but i want to find the mass of something that has a density of 100kg per m^3. so is the mass just 100kg then? that seems too simple...
    You need to know the volume as well.

    1 m^3 of the material, exactly, would be 100 kg. 5 m^3 would be 500 kg.

    Kind of light. Is it balsa wood?
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  3. #3
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    it's a snowflake
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  4. #4
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    Quote Originally Posted by isuckatcalc View Post
    it's a snowflake
    Good lord, then, order me 6 \times 10^5 cubic meters. I want a snow day.
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  5. #5
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    Quote Originally Posted by isuckatcalc View Post
    i know that density=mass/volume. so m=d*v. but i want to find the mass of something that has a density of 100kg per m^3. so is the mass just 100kg then? that seems too simple...
    If you have 1 cubic meter of the material,
    then the mass will be 100 kg.

    It's really that simple.

    The problem is to find the volume of the snowflake.

    .
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  6. #6
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    Smile

    Quote Originally Posted by isuckatcalc View Post
    i know that density=mass/volume. so m=d*v. but i want to find the mass of something that has a density of 100kg per m^3. so is the mass just 100kg then? that seems too simple...
    hi 100 kg/m^3,which is the density of something,means that in each 1 m^3 you'll find 100 kg of that thing.
    So the mass will equal 100 Kg only when the volume is 1 m^3.
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