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Find the expression for the ratio of the stagnation pressure after a shock wave to the static pressure before the shock wave as a function of k and the Mach number upstream of the shock wave Ma1.
Person spining has his arms outward. The moment of inertia is 52kg*m^2 and ang. speed 3.80 revolutions/ second. if the persons arms are down. moment of inertia goes to 35kg*m^2. find the new angular speed
1 What is the magnitude of the reaction force at pin B in lbs? 2 What is the reaction force in the x direction at pin A from ground on member AB in lbs? 3 What is the reaction force in the y direction at pin A from ground on member AB in lbs? 4 What..
If an embankment is placed that adds an average additional stress of 32psi to the clay, compare the settlement from the laboratory consolidation test to the settlement from the estimated field consolidation curve.
The 2 blocks are released from rest when r =0.8m and theta=30d. Neglecting the mass of the pulley and the effect of friction in the pulley and between block A and the horizontal surface.
The dye appears 14 days later in an observation well 75 ft away from the injection point. Compute the seepage velocity and estimate the hydraulic gradient in the aquifer if the porosity of the soil is 42%.
why the highest head of the water in the excavation is mathematically guaranteed to occur on the edge of the excavation. explain in mathematical and/or physical.
Is depreciation equivalent to both investment and expense which have been categorized as environmental conservation cost
Use LRFD and select an American Standard Channel shapefor the following tensile loads. Dead load=54 kips live load= 80 kips and wind load=75 kips. The connection will be with two 9inch long longitudinal welds.
The two disks each have a mass of 18 kg and are attached at their centers by an elastic cord that has a stiffness of k= 1.6 kN/m. Determine the stretch of the cord when the system is in equilibrium and the angle of the cord.
If the BOD5 of a municipal wastewater is 310 mg/L and the BODU is 340 mg/L, determine the BOD reaction rate constant (base e). What would be the 3 day 30°C BOD Assume, temperature coefficient = 1.047.
A heat pump that operates on the ideal vapor compression cycle with refrigerant-134a is used to heat a house.
A well pump test was made in a surface layer of sand 10m thick overlying impervious clay. Before the test the water table was at 1.5m depth. After steady state had been reached in the tests
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