Extracted text: PEGN 251 Midterm Fall 2021 5. A very small drop of fluid 1 immersed in fluid 2 is sitting on a solid surface. Based on the image to the right, which of the following statements are correct? O is the contact angle of fluid 1 to solid surface relative to fluid 2 b. 0 is the contact angle of fluid 2 to solid surface relative to fluid 1 c. Fluid 1 is the wetting phase to solid surface relative to fluid 2 d. Fluid 2 is the wetting phase to solid surface relative to fluid 1 e. The pressure of fluid 1 should be higher than that of fluid 2 nearby The pressure of fluid 1 should be lower than that of fluid 2 nearby g. The pressure of fluid 1 is the same as that of fluid 2 nearby а. Solid f. 6. Equation p = Po + pg(h – ho) describes distribution of hydrostatic pressure in Any fluids b. Incompressible fluids c. Compressible fluids а. 7. An object can float both above water (specific gravity = 1.0) and oil (specific gravity = 0.8). What can you infer from Archimedes principle and balance of forces? a. The buoyancy force on the object when it is floating above water is more than the buoyancy force on it when it is floating above oil. b. The buoyancy force on the object when it is floating above water is less than the buoyancy force on it when it is floating above oil. c. The buoyancy force on the object when it is floating above water is the same as the buoyancy force on it when it is floating above oil. d. When floating, the volume of the object below the surface of water is more than the volume of the object below the surface of oil. e. When floating, the volume of the object below the surface of water is less than the volume of the object below the surface of oil. When floating, the volume of the object below the surface of water is the same as the volume of the object below the surface of oil. f. 8. In drilling, a gas “kick" is a pocket of gas that enters the wellbore when the hydrostatic pressure from the drilling fluid is not enough to resist the pressure of the reservoir. As the gas pocket rises in the wellbore, assume that the measured surface weight of drill string does not change, what happens to the weight-on-bit (WOB)? a. Increase b. Decrease No change c.