Bulk modulus of Elasticity and compressibility - bulk modulus example problems with solution

Explanation of Bulk modulus of Elasticity and compressibility with understandable problems solutions has been made in this video.
0:01 A solid lead sphere of volume 0.5cm3 is dropped in the ocean to a depth of about 2000m where the pressure increases by 2e7Pa. Lead has a bulk modulus of 7.7e9Pa. What is the decrease in the volume of the sphere?
04:10 The bulk modulus of kerosene is 1.3 GPa. When a pressure of 1.8 MPa is applied to a liter of kerosene, its volume decreases by
06:27 The fractional change in the volume of oil is 1 percent when a pressure of 2e7N/m2 is applied. The bulk modulus and its compressibility is?
07:25 compressibility factor