An object weighs 0.25N in air and 0.01N when immersed in water. Calculate

Question

(a) its relative density
(b) its apparent weight in a liquid of density 800kgm^-3

Answer 1

0.1kg

Answer 2

Relative density is equal to 0.25 : 0.01 = 0.25/0.01 = 25

Answer 3

a) R.d = 1.04