Question

2. An object will sink in a liquid if the density of the object is greater than that of the liquid. The mass of a sphere is 9.83 g. If the volume of this sphere is less than __________ cm3, then the sphere will sink in liquid mercury (density = 13.6 g/cm3).

Answer 1

first blank:

D=13.6=9.83/V

V<=9.83/13.6

Answer 2

Density=13.6=9.83/Velocity

Velocity=9.83/13.6

Answer 3

I don't understand how one gets velocity from mass = volume x density.