Question

What would be volume of 15gms of steel in C.C, if it's specific gravity is 7.8?

Answer 1

The steel will float if we make the upthrust it will experience by water more or equal to its weight.

Let V be the volume of steel immersed in water.

so it will displace V volume of water.

Upthrust on this=Vdg

d is the density of water=1g/cc

Upthrust=Vdg

=10V

weight of 1 gram of steel=7.8g

to float,

7.8 x 10=10V

v=7.8cc

so, if we are given 1 gram steel, if we beat it and bend it such a way that its volume is more than 7.8cc(may be in the shape of boat)

then it will float.

Answer 2

Answer:

15 gram having specific gravity as 7.8?