(Solved): 11. A pressure gage connected to a tank reads \( 500 \mathrm{kPa} \) at a location where the atmosp ...

11. A pressure gage connected to a tank reads \( 500 \mathrm{kPa} \) at a location where the atmospheric pressure is \( 94 \mathrm{kPa} \). Determine the absolute pressure in the tank. (5 marks) 12. Two oil tanks are connected to each other through a manometer. The densities of oil and mercury are \( 720 \mathrm{~kg} / \mathrm{m}^{3} \) and \( 13,600 \mathrm{~kg} / \mathrm{m}^{3} \), respectively If the difference between the mercury levels in the two arms is \( 80 \mathrm{~cm} \), determine the pressure difference between the two tanks. ( 8 marks)