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What is the standard mass-density of a cubic decimeter of pure water?

What is the standard mass-density of a cubic decimeter of pure water? - Physics Forum

What is the standard mass-density of a cubic decimeter of pure water? - Physics Forum. Discuss and ask physics questions, kinematics and other physics problems.


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  #31  
Old 07-15-2005, 07:43 PM
Gene Nygaard
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Default What is the standard mass-density of a cubic decimeter of pure water?



Sam Wormley wrote:

What's your point? That's the same number I gave you, isn't it? It
differs from what Eric Weisstein gave, to the precision to which he
gave it, doesn't it?

1.00000 g/cm³
0.99997 g/cm³
-------------
0.00003 g/cm³

Did you forget that according to the general rules of mathematics,
trailing zeros after the decimal point are supposed to be significant?

Do you remember when 1 ml was 1.000028 cm³? Or the earlier value
used, 1.000027 cm³? Do you know why that was? Hint: look up the 1901
redefinition of the litre.

Invert those numbers and see what you get.

Why in the world do you suppose the litre was redefined?

This is indeed a well known, generally accepted fact, Sam. Just admit
that you quoted a source which was incorrect.

Gene Nygaard.

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  #32  
Old 07-15-2005, 08:53 PM
freddy osbourne
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Default What is the standard mass-density of a cubic decimeter of pure water?

according to schaums outline contiunuum mechanices....the amount of mass
occupying a volume V at time t is given by the integral m=int(ro(x,t)dV) in
which ro(x,t) isa contiuous function fo coordinates called mass density...
"Puppet_Sock" <[Only registered users see links. ]> wrote in message
news:1121262152.985687.11640@o13g2000cwo.googlegro ups.com...


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