a. What is the change in air pressure in pascals between the floor and the ceiling of the a room with walls that are 8 ft tall? b. A diver in the ocean (SG = 1.03) records a pressure of 1.5 atm on her depth gage. How deep is she? c. A hiker starts a hike at an elevation where the air pressure is 960 mbar, and he climbs 1240 ft to a mountain summit. Assuming the density of air is constant, what is pressure in mbar at the summit? d. Lake Pend Oreille, in northern Idaho, is one of the deepest lakes in the world, with a depth of 370 m in some locations. This lake is used as a test facility for submarines. What is the maximum gage pressure that a submarine could experience in this lake? e. A 55 m tall standpipe (a vertical pipe that is filled with water and open to the atmosphere) is used to supply water for firefighting. What is the maximum gage pressure in the standpipe?