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Determine the maximum tensile stress σt(due to pure bending about a horizontal axis through C by positive bending moments M) for beams having cross sections as follows (see figure).
(a) A semicircle of diameter d
(b) An isosceles trapezoid with bases b1= b and b2= 4b/3, and altitude h.
(c) A circular sector with α = π/3 and r = d/2
As shown, a 130 lb bungee jumper wants to jump from the top of a 655 ft high bridge and be able to just touch the water below. Given that the bungee cord has a spring constant of 2.33 lb/ft, what should the bungee cord's relaxed length, l, be for ..
steam flows steadily through an adiabatic turbine. the inlet conditions of the steam are 10 mpa 450 ordmc and 80 ms and
A new motorcycle is being developed to meet new gas mileage standards recently passed by the federal government. An engineer tested three model designs by randomly assigning the motorcycles in a blind study (the riders recorded the mileage but did no..
liquid water enters a 25-kw pump at 100kpa pressure at a rate of 5kgs. determine the highest pressure the liquid water
A piston-cylinder assembly contains a two-phase liquid-vapor mixture of H2O at 160 lbf/in.2 with a quality of 70%. The mixture is heated and expands at constant pressure until a final temperature of 480oF is reached. Determine the work for the proces..
A fluid is flowing in a pipe, the pressure drop is 12 psi per 1000 ft. We now double the flow rate, keeping other parameters constant. What is the pressure drop if the new Reynolds’ number is a) 10 and b) 108?
A pitot static tube on an airplane is flying at standard sea level reads 1.04x10^5 M/m^2. Calculate the velocity of the airplane.
A 1/10 scale model is to be constructed to verify the performance targets of the prototype turbine and to determine its cavitation limits. The head of water available for the model tests is 5.0 m. When tested under dynamically similar conditions a..
A glass/epoxy laminate with a fiber orientation of 30 degrees is subjected to a shear stress t_xy (or tau_xy) which can be positive or negative.
Determine (a) the temperature of the air at the compressor exit, in 8C, and (b) the heat transfer, in kJ per kg of air flowing. (c) Sketch the process on p-y and T-s diagrams and associate areas on the diagrams with work and heat transfer, respect..
determine the temperatures of surface 1 through 4 of the furnace cavity of example 13.3 if the entire furnace
In which boiling regime does the chip operate after the power dissipation returns to its design value? To return to the nucleate boiling regime, how much must the clock speed be reduced relative to the design value?
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