2006-11-14 18:26:58 · 5 answers · asked by TyMill 1 in Science & Mathematics ➔ Physics
will decrease as the mass remains the same and the volume increases
2006-11-14 19:30:28 · answer #1 · answered by raj 7 · 1⤊ 0⤋
density is equal to mass/volume think of kg/m^3. The amount of stuff within a certain box or space. So we are not changing the mass right? but the volume is changing right? so the density goes.... down. If the metal changed to a liquid or gas would this clear anything up? What is less dense steam or an ice cube? the only way they would be the same is if we forced the steam to take the same dimensions as the ice cube -- this would take lots of pressure. And we now see the familiar relationship PV=nRT=NkT
2006-11-15 02:59:10 · answer #2 · answered by xian gaon 2 · 1⤊ 0⤋
Since the mass is conserved (same number of molecules and weight for the bar) but the volume is increased the density is reduced.
Density is mass per unit volume (often described as weight per volume since gravity is usually constant in the lab and weight is usually easy to measure).
2006-11-15 02:53:02 · answer #3 · answered by Mike K 1 · 1⤊ 0⤋
Its density remains the same. Means to say that the initial density is equal to the final density. There is no change in the density of iron block.
2006-11-15 02:37:44 · answer #4 · answered by Deep 1 · 0⤊ 2⤋
The mass is the same at M and the volume increases to V + dV so the density is d = M/(V + dV), which decreases with increasing dV.
2006-11-15 02:57:08 · answer #5 · answered by d/dx+d/dy+d/dz 6 · 1⤊ 0⤋