Question

1) Find the mass of an ice cube of edge 2 cm. The density of ice is 9000 kg/m^3.

2) A beaker weighs 120 g when empty and 200 g when filled with kerosene. Find the volume of the beaker. The density of kerosene is 800 kg/m^3.

3) A metal ball weighs 1.8 kg. The volume of the ball is 250 cc. Find the density of the metal.

4) A metallic object of irregular shape displaces 21 mL of water when it is immersed in a measuring cylinder containing water. If it's mass is 56.7 g, what is the density of the metal?​

Answer 1

1.

Edge=2 cm=0.02 m

Vol=0.02^3=0.0008 m^3

den=9000kg/m^3

Mass=Den×Vol=9000×0.0008=72 Kg

2.

Mass of kerosene=80g=0.08 Kg

Den=800kg/m^3

Vol=M/Den=0.08/8000=0.00001m^3