Consider the system shown in the figure. If a change of 0.9 kPa in the pressure of air causes the brine- mercury interface in the right column to drop by 5 mm in the brine level in the right column while the pressure in the brine pipe remains constant, determine the ratio of A2/A1. Air Brine pipe SG - LI Water Area. A Arca, A Mercury SG- 13.56 A) 0.344 B) 0.443 C) 0.434 D) 0.400

4- Consider the system shown in the figure. If a change of P kPa in the pressure of air causes the brine- mercury interface in the right column to drop by d mm in the brine level in the right column while the pressure in the brine pipe remains constant, determine the ratio of A₂/A₁. P (kPa) d (mm) 6 Sum of last 2 digits of 35 YorkU ID# ending with 0, 2, 4, 6, 8 Sum of last 2 digits of 45 YorkU ID# ending with 1, 3,5,7,9 7 Area, A₁. Air Water Mercury SG = 13.56 Brine pipe SG = 1.1 Area, A₂

Number 15. complete solution and box final answer

for the compound manometer what would be an advantage or disadvantage in this measure