Question

2. A barrel contains a 0.120 m layer of oil floating on water that is 0.250 m deep. The density of the oil is 600 kg/m³. What is the gauge pressure at the oil- water interface and at the bottom of the barrel?

Answer 1

$p_1=p_0+\rho_1gh_1=102~kPa,$

$p_2=p_1+\rho_2gh_2=105~kPa.$