1. Density is mass divided by volume

But then mass is volume times density, but density is mass divided by volume

Let Volume be x,
mass is y,
density is z

Then z = y / x

And y = x * z but z is y / x then it turns out y = x * y / x or xy / x, we reduce and it turns out y = y, which is mass = mass and no matter what volume is, the mass will not change.

It should be clarified that this is a rest mass

Or have I made a mistake somewhere?  2.

3. You just appear to be bewildered by basic algebra...

It should be blatantly obvious that y=y...  4. Originally Posted by Anffaeledig Density is mass divided by volume

But then mass is volume times density, but density is mass divided by volume

Let Volume be x,
mass is y,
density is z

Then z = y / x

And y = x * z but z is y / x then it turns out y = x * y / x or xy / x, we reduce and it turns out y = y, which is mass = mass and no matter what volume is, the mass will not change.

It should be clarified that this is a rest mass

Or have I made a mistake somewhere?
Well of course you get y=y if you do what you have done.

Think: if I spend some money M to get a number of oranges, N, I can write the price per orange P as M/N. And that means that M=N*P.

So I can do the same thing as you did, viz. I can write M =N*(M/N) which reduces to M=M. Does that mean the money I have to spend does not depend on how many oranges I buy?  5. [QUOTE = exchemist; 632740] [QUOTE = Anffaeledig; 632735]
(M / N)
[/ QUOTE]

hooks (this is me and my mind)   6. Originally Posted by Anffaeledig [QUOTE = exchemist; 632740] [QUOTE = Anffaeledig; 632735]
(M / N)
[/ QUOTE]

hooks (this is me and my mind) Yes, it is.  Bookmarks
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