7) A mountain lake has an average temperature of and a maximum depth of 40 m. The barometric

pressure is 598 mm Hg. Determine the absolute pressure at the deepest part of the lake.

8) Closed tank contains compressed air and oil (SGoil=0.9) as is

shown in Figure. A U-tube manometer using mercury (SGHg=

13.6) is connected to the tank as shown. The column heights a

h1= 36 in, h2=6 in, h3=9 in. Determined the pressure reading of

the gage.

9)

10)

11)

12)