Quiz 2 final _2_

These are the questions and the corresponding figure for the questions, make sure for each question the answers are neat and readable.

In April 2010, the worst oil spill ever recorded occurred when an explosion and fire on the Deepwater Horizon offshore oil-drilling rig left 11 workers dead and began releasing oil into the Gulf of Mexico. One of the attempts to contain the spill involved pumping drilling mud into the well to balance the pressure of escaping oil against a column of fluid (the mud) having a density significantly higher than those of seawater and oil.In the following problems, you may assume that seawater has a specific gravity of 1.03 and that a hypothetical subsea wellhead is 7167 ft below the surface of the Gulf.             Gauge Pressure Estimate the gauge pressure (psig) in the Gulf at a depth of 7167 ft. ______psig

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Squeezing a Brass Sphere A solid brass sphere is initially surrounded by air, and the air pressure exerted on it is 1.00 x 105 N/m2 (normal atmospheric pressure). The sphere is lowered into the ocean to a depth where the pressure is 2.00 x 10' N/m2. The volume of the sphere in air is 0.35 m³. By how much does this volume change once the sphere is submerged? SOLUTION Conceptualize Think about movies or television shows you have seen in which divers go to great depths in the water in submersible vessels. These vessels must be very strong to withstand the large pressure under water. This pressure squeezes the vessel and ---Select--- its volume. Categorize We perform a simple calculation involving the following equation, so we categorize this example as ---Select-- problem. ΔF ΔΡ volume stress A B = = - AV Δν volume strain Solve the equation above for the volume change of the sphere: VAP AV = - B Substitute the numerical values (Enter your answer in m3.): AV = m3 The negative sign…

5) In class, we showed that the temperature increases when gas is used to fill a tank. In words a non-scientist and non-engineer family member or friend would understand, explain why this happens. I encourage you to actually explain this to someone you know!

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Task3

5. A human being has an average venous blood pressure of 12 mm Hg (Hg = mercury). The density of Hg (mercury) is 13,530 kg/m3. How high does a saline bag have to be raised to just barely equal to that of the blood in the vein) of saline through a line and needle inserted into a person's vein? The density of saline is 1020 enable the flow (that is, the pressure of the saline at the needle kg/m3.

Chapter Five Example: H.W Example : Pressure in A Decelerating Tank of Liquid The tank on a trailer truck is filled completely with gasoline, which has a specific weight of 42 lbf/ft3 (6.60 kN/m³). The truck is decelerating at a rate of 10 ft/s2 (3.05 m/s²). (a) If the tank on the trailer is 20 ft (6.1 m) long and if the pressure at the top rear end of the tank is atmospheric, what is the pressure at the top front? (b) If the tank is 6 ft (1.83 m) high, what is the maximum pressure in the tank? 204 Now if the tank is assumed to be opened find the following: If the tank on the trailer is 20 ft (6.1 m) long and 6 ft (1.83 m) high, what is the pressure at the top front and bottom rear? and what is the maximum pressure in the tank? The width of truck is 2 m. 201

Help with Part 4

XYZ Company Ltd has consulted your firm Zig-Zag Energy over an intention to generate electricity in Ghana. Being the senior project engineer for Zig-Zag Energy, management has asked you to prepare a detailed technical report in respect to the project. a) Discuss the major factors to take into consideration when consulting on such projects.                                                                                                           A tank containing air is stirred by a paddle wheel. The work input to the paddle wheels is 2000KJ and the heat transferred to the surrounding from the tank is 6000KJ. b) Determine the change in the internal energy of the system                                              There has been a sharp differences between the board of Blue-Blue Energy over which of the energy sources (hydroelectric power plant-HEP and Coal fired plant) is best for power generation. As an energy expert, you were confronted by the debating faction for your opinion. You…