Question

The weight of a certain crown in air was found to
be 14 N and its weight in water is 12.7 N. Was it
[if R.D of gold is 19.3, Ywater = 9.81 kN/m]​

Answer 1

Answer:

I CANNOT UNDERSTAND YOUR QUESTION.. PLEASE UPLOAD FULL QUESTION..

Answer 2

Answer:

The Crown is not of pure gold

Explanation:

According to the question, the weight of the crown in the air $C_{a}$ = 14 N and the weight of the water $C_{w}$ = 12.7 N.

Weight in air - weight in water = buoyant force

$C_{a}-C_{w}=14-12.7=1.3 N\\SG=\frac{12.7}{1.3}+1 \\=10.77$

So, the RD of the crown is lesser than that of pure gold.

So, the crown is not made up of pure gold.