Physics, asked by drkdas1, 10 months ago

A golden-colored cube is handed to you. The person wants you to buy it for 60 thousand, saying that it is a gold nugget. You pull out your old geology text and look up gold in the mineral table, and read that its density is 19.3g/cm​.You measure the cube and find that it is 2 cm on each side, and weighs 40 g. What is its density? Is it gold? Should you buy it?

Answers

Answered by kaushtubh777singh
39

Answer:

Explanation:

Volume of cube=side³

=2*2*2

=8 cm³

Mass of cube=40g

Its density=mass/volume

=5g/cm³

which differs the value given in the text hence it is not gold and u shld not bye it...

Instead u shld call the police for arresting the person...

Answered by nitinkumar9lm
15

Answer:

The density of the cube is 5 gm/cm^{3}. The cube is not gold so I will not buy it.

Explanation:

  • The mass of the object divided by its volume gives the density of the object.
  • We can check the purity of a substance by comparing its density with the density of pure material.

The formula used for density is given by:

D=\frac{M}{V}

where M= the mass of the object.

            V= object volume.

Step 1:

Given the cube of side s= 2cm.

The volume of the cube, V= s*s*s

                                            = 2*2*2  cm^{3}

                                            =8  cm^{3}

Density of cube =(\frac{40 }{8 } } ) gm/cm^{3}

                          =5 gm/cm^{3}

Step 2:

The gold has a density =19.3 gm/cm^{3}

So, cube density is less than that of gold.

Hence, the cube is not of gold. I will not buy it.

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