A 15-L kerosene tank (left(ho=820 mathrm{~kg} / mathrm{m}^{3} ight)) is filled with a 2 - (mathrm{cm})-diameter hose

A 15-L kerosene tank \(\left(ho=820 \mathrm{~kg} / \mathrm{m}^{3}\right)\) is filled with a 2 - \(\mathrm{cm}\)-diameter hose equipped with a \(1.5-\mathrm{cm}\)-diameter nozzle meter. If it takes \(18 \mathrm{~s}\) to fill the tank, determine the pressure difference indicated by the nozzle meter.