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2. A golden-colored cube is handed to you. The person wants you to buy it for
$100, saying that it's a gold nugget. You pull out your old geology text and
look up gold in the mineral table, and read that its density is 19.3 g/cm3. You
measure the cube and find that it is 2 cm on each side, and has a mass of 40g.
What is its density? Is it gold? Should you buy it?

Respuesta :

Answer:

Volume of the cube is 2*2*2 = 8cm^3.

Divide the weight (40g) over the volume (8cm^3).

Density is 5g/cm^3. Definitely not gold.

Explanation:

Yes, the given golden-colored cube is gold .The density of gold is 32 gm/cm³ and we must buy it.

What do you mean by density?

Density is a  mass of a unit volume of a material substance.

The formula for density is d = M/V, where d is density, M is mass, and V is volume.

Density is commonly expressed in units of grams per cubic centimetre.

To calculate density-

given

mass=40gm

side of cube =2cm

therefore, volume=(side)³

=8cm³

density=?

density=mass/volume

density=40/8

density=5 gm/cm³

The handed golden-colored cube is gold with its density 5gm/cm³ and  hence we must buy it.

Learn more about density ,here:

https://brainly.com/question/15164682

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