Q & A

QUESTION 1

At a depth of 8 km in the ocean the pressure is

81.8 MPa. Assume that the specific weight of seawater at the surface is

10.05 kN/m3 and that the average volume modulus is 2.34 109 N/m2 for that

pressure range.

(a) What will be the change in specific volume between that at the

surface and at that depth?

(b) What will be the specific volume at that depth?

(c) What will be the specific weight at that depth?

QUESTION 2: Pressure Difference in a Manometer

a) Write an expression for the water difference between points A and B, in terms

of γw , the specific gravity of the oil, SGoil, the levels of the fluids z’s at A, B, C, D

and E.

b) Determine the pressure difference between locations A and B in the figure below. The

water has a γw = 9800 N/m3 and the oil specific gravity, SGoil= 0.85