A stack of 20 NT is denser than a stack of 5 NT, because the volume and mass of a stack of 20 NT is bigger than the volume and mass of a stack of 5 NT. To calculate the density of a matter, just use mass/volume, so maybe heavier or bigger stuff is denser.
Friday, October 10, 2008
Which is more dense—a stack of 5 NT coins or a stack of 20 NT coins?
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