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The boundary layer associated with parallel flow over an isothermal plate may be tripped at any x-location by using a fine wire that is stretched across the width of the plate. Determine the value of the critical Reynolds number Rex,c,op that is associated with the optimal location of the trip wire from the leading edge that will result in maximum heat transfer from the warm plate to the cool fluid.
Explain the operation of an on-delay relay.
a 12x36 and 9 high empty prism composed of a material with an elastic modulus of 345000 psi 9000 psi yield stress the
determine diameter of a circular rod of ductile material with a fatigue strength ,e=280 Mpa. Add a tensile yield strength of 350 Mpa. The member is subjected to a varying axial load from 700 kN to -300kN. Assume Kt=1.8 and factor of safety=2.
A closed system consisting of 8.25 lb of a gas undergoes a process during which the relation between pressure and volume is pV^n = constant. The process begins with p1 = 18 lbf/in^2 , v1 = 1.25 ft^3 /lb and ends with p2 = 53 lbf/in^2 , v2 = 0.5 ft^3 ..
Consider atmospheric air at 25°C and a velocity of 25 m/s flowing over both surfaces of a 1-m-long flat plate that is maintained at 125°C. Determine the rate of heat transfer per unit width from the plate for values of the critical Reynolds number..
a converging nozzle with an exit area of 0.05 m2 is connected to a reservoir containing air with a stagnation pressure
an 18-m-long steel wire of 5-mm diameter is to be used in the manufacture of a pre-stressed concrete beam. it is
a temperature scale is defined by the equation tsti lim pi-0 pspi1.36609 as in gas thermomery but now the reaumur
the molar volume of al2o3 at 25 degrees celsius and 1 atm is 25.715 ccmol. its coefficient of thermal expansion is 26
a 1.5 in-diameter bar has been machined from a steel 1050 su 100ksi sy 84ksi. this part is to withstand a fluctuating
A tapered column of modulus E and mass density ρ varies linearly from a radius of r1 to r2 in a length L, and is hanging from its broad end. Find the total deformation due to the weight of the bar.
Knowing the speed at point 1 of a fluid upstream of a sphere and the average speed at point 2 in the wake of in the sphere, can one use the Bernoulli equation to find the pressure difference between the two points? Provide the rationale for your d..
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