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a super tanker is 360m long and has a width of 70m and draft of 25m. assuming that the drag is mainly due to the skin friction at the bottom and side faces and that the boundary layer develops naturally,determine the force and the power required to overcome the skin friction.the ship is travelling in sea water(density1020kg/m^3) and at a speed of 24km/hr
Calculate the mass of methane that must be burned to provide enough heat to convert 363.0 g of water at 43.0°C into steam at 117.0°C. (Assume that the H2O produced in the combustion reaction is steam rather than liquid water.)
A three-phase, wye-connected, 2300-V, four pole, 1000-kVA, 60-Hz synchronous machine has a synchronous reactance Xs = 5 Ω, a field resistance Rf = 10 Ω, and an approximately linear magnetization characteristic (Ef versus If ) with a slope Kag = 200 Ω..
You are the project manager of a team that has been asked to complete the design of a chemical plant up to the stage of design selection. You have three engineers available (plus yourself) and the work must be completed in ten weeks. Develop a pro..
A 50-kW, 250-V, short-shunt compound generator has the following data: Ra = 0.06 Ω, RS = 0.04 Ω, and Rf = 125 Ω. Calculate the induced armature voltage at rated load and terminal voltage. Take 2 V as the total brush-contact drop.
A mixture of ethanol and benzene is separated in a network of distillation and membrane separation steps. In one intermediate step, a near-azeotropic liquid mixture of 8,000 kg/h of 23 wt% ethanol in benzene is fed to a pervaporation membrane cons..
The geometry and dimensions for a section of the blood vessel are shown on the right. Based on the Poiseuille's law the viscous resistance against blood flow through this section is determined to be 0.0002 mmHg•s/ml. If the diameter of the vessel ..
The resulting products are cooled and passed over a medium-temperature shift catalyst that gives an outlet composition corresponding to equilibrium at 350 °C.
Derive an expression for the optimum economic thickness
A sinusoid with the frequency of 125 kHz is sampled at 70,000 samples per second. What is the apparent frequency of the sampled signal?
Search the Internet to find a transverse section of the body that was imaged using computerized tomography (CT) or magnetic resonance imaging (MRI). Print the image and indicate its web address.
The labor force is 100 million and the unemployment rate is 5 percent. One million people quit looking for a job. What is it called when an individual leaves the labor force, and in this case what is the new unemployment rate?
Calculate the ?S for the transfer of one mole of octane to water using the change in multiplicities assumed for the first shell of water molecules surrounding the molecules.
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