Question

A 230mg piece of gold is hammered into a sheet measuring 23cm x 17cm. What is the thickness of the sheet in meters? Density of gold is 19.32g/cm3

Answer 1

Answer:

t= 0.0003 mm

Explanation:

Given that

mass ,m = 230 mg

m  = 0.23 g

Area ,A= 23 x 17 cm²

A= 391  cm²

Density ,ρ = 19.32 g/cm³

Lets take thinness of the sheet =  t cm

We know that

Mass = Density x Volume

m = ρ A t

Now by putting the values in the above equation we get

0.23 = 19.32 x 391 x t

$t=\dfrac{0.23}{19.32\times 391}\ cm$

t=0.000030 cm

t= 0.0003 mm

That is why the thickness of the sheet will be 0.0003 mm.