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Submarines change their depth by adding or removing air from rigid ballast tanks, thereby displacing seawater in the tanks. Consider a submarine that has a 700m3 air-ballast tank originally partially filled with 100m3 of air at 1500 kPa and 15oC. For the submarine to surface, air at 1500 kPa and 20oC is pumped into the ballast tank, until it is entirely filled with air. The tank is filled so quickly that the process is adiabatic and the seawater leaves the tank at 15oC. Determine the final temperature and mass of the air in the ballast tank.
vehicles arrive at a tollbooth according to the function lambdat 5.2 - 0.20t where lambdat is innbspvehicles per
Draw the free-body diagram of member ABC which is supported by a smooth collar at A, rocker at B, and Find the Find the force of CD, and the force acting at point A & B
Briefly explain how each of the following influences the tensile or yield strength of a semicrystalline polymer and why: (a) Molecular weight (b) Degree of crystallinity (c) Deformation by drawing (d) Annealing of an undeformed material
Submit your cost analysis for the materials, along with a scaled drawing of the truss, identifying on the drawing the tensile and compressive force in each member. Also include your calculations of the complete force analysis.
It was observed that the truck traveled a distance of 120 ft after the brake was engaged before coming to a complete stop. If instead the driver brings the truck to a velocity of 90 mph and completely engages the brake
A wrought iron water line connecting two reservoirs at 20°C has a length of 1500 m, a diameter of 75 cm, two elbows (90º, long-radius, flanged), a fully open gate valve, and a reentrant pipe entrance.
Use the bisection method to find the root of the equation f(x) = x 2 - 4sin(x) = 0. For initial bracketing interval [a,b] , take a=1 and b = 3.
A glass tube with inside diameter of 2-mm is inserted vertically into a dish of mercury at 20°C. Determine the difference in mercury levels inside and outside the tube.
Two pipes, one circular and one square, have the same cross-sectional area. Which has the larger hydraulic radius, and by what percentage
A space is at a temperature of 75 F, and the relative humidity is 45 percent. find the partial pressures of the air and water vapor
A rectangular gate is inclined at an angle of 30 degrees from the horizontal. It is 4 ft wide by 6 feet long. If it is hung from its upper end which is 8 feet below the waters top edge, what minimum applied force (bottom) is needed to open the gat..
assume hydrostatic uplift varies uniformly from full hydrostatic head at the heel of the dam to zero at the toe. consider 1m length of dam.
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