Apply the grid method (p. 11) to each situation.
a. What is the change in air pressure in pascals between the floor and the ceiling of a room with walls that are 8 ft tall.
b. A diver in the ocean (S 1.03) records a pressure of 2 atm on her depth gage. How deep is she?
c. A hiker starts a hike at an elevation where the air pressure is 940 mbar, and he ascends 1200 ft to a mountain summit. Assuming the density of air is constant, what is the 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 350 m in some locations. This lake is used as a test facility for submarines.
What is the maximum pressure that a submarine could experience in this lake? e. A 60 m tall standpipe (a standpipe is vertical pipe that is filled with water and open to the atmosphere) is used to supply water for fire fighting. What is the maximum pressure in the standpipe?