(1) A solid weight 0.04 Newton in air and 0.024 newton when fully immersed in liquid of density 300 kilogram per metre cube.What is the volume of the solid?

Question

(2)The density of a body is 5*10^3 kilogram per metre cube and it weights 1 newton in air and.Calculate the apparent weight of the body when when totally immersed in water.(density is 10^3 kilogram per metre cube)

Answer 1

weigh=mg=.04
mass= .04/9.8=4.08grams

in liquid:
weight= mg-bouyancy
= mg-volume*density=mg-V*300g/liter

.024=4.08-v*300g/liter

v= = 4.06 grams*1000cm^3/300g
= 13.52 cm^3 check all that.

2. volume=mass/density=1/(9.8*E3)
volume= 102 cm^3

bouyancy= 102cm^2*1g/cm^3

apparent weight= 1-9.8N/kg*.102kg
= 1-.98 N=.02N check math.

Answer 2

A solid cube of side has a mass of 250g. What is its density in kgm-3?