Question

5. What is the relationship (if any) between the condition of the penny and its mass? Explain.

6. Comment on how (if at all) the observed condition of the penny affects the calculated density.

Answer 1

Hi,

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(5)

If the question is about a metal/solid penny, then there is no relation ship between the condition of a penny and its mass. There will be no change in the mass of a penny as long as it's volume is constant or remain unchanged. If the penny undergo some sort of rusting or corrosion, then there is a chance of change in material of penny, which causes a density variation, which results in a very small variation of mass of the penny, even if the volume remains constant. But in normal cases, this situation is not possible, since the materials/metals used for the making of pennies are usually don't undergo corrosion. (eg; Copper, Zinc, Silver, etc...)

(6)

We know that, Density of a material is always constant. So the observed condition won't affect the calculated density. Even if the volume of the penny changes, there will be no change can be observed in the density of the material. But as I said earlier, If the penny undergo some sort of rusting or corrosion, then there is a chance of change in material of penny, which causes a density variation, which results in a very small variation of mass of the penny, even if the volume remains constant. But in normal cases, this situation is not possible, since the materials/metals used for the making of pennies are usually don't undergo corrosion. (eg; Copper, Zinc, Silver, etc...)

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