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given a 22.414 liter volume of air at STP containg: 21.224kPa oxygen, 79.119 kPa nitrrogen, 0.946kPa argon,and 0.036 k carbondioxide. Find the gram molecular weight of the air.
A 3-mm thick panel (1 m x 1 m) of aluminum alloy (k = 177 W/m. K, Cp = 875 J/kg. K, and p(rho)= 2770 kg/m3) is heated in a large oven with air at T = 175oC and a convective heat transfer coefficient of h = 40 W/m2.K.
A disabled automobile is pulled by means of two ropes as shown. The tension in AB is 400 lb and the angle is 20. knowing that the resultant of the resultant of the two forces applied at A is directed along the axis of the automobile, determine by ..
Calculations with steam mixed with additional steam at a different pressure, A steam press at 650Kpa + dryness fraction of 0.9% flows along a pipe at a rate of 3.5Kg per second
Under the 200% DB depreciation, what is the cumulative depreciation through the end of year four? The useful life of the mixing tank is 9.5 years.
Assess the adequacy of this existing curve in light of the reconstruction design speed of 60 mi/h and, if the existing curve is inadequate, compute a satisfactory curve length.
Two box culverts each is 0.61 m by 0.61 m and has n = 0.013, Ke = 0.05, Cd = 0.85, L = 30 m, So = 0.7%, and HW = 1.5 m. a. What is the design flow capacity for free outlet condition b. What is the design flow capacity for tailwater of TW = 1 m
Write the mass balance equation for a completely mixed lake with an impulse input of mass,M, added at time t=0. Assume the lake is of constant volume, V, with continuous outflow, Q, and a conservative substance.
calculate the alkalinity as CaC03 of water that contains 85mg/l of HCO3, 120 mg/l of CO3 and 2 m/l of OH.
Define flow at a hydraulic jump (upstream and downstream) in terms of the types of flow and corresponding Froude number. What is the depth of water at each section (upstream and downstream) compared to critical depth
A 500 lb flywheel is shown. A 100 lb block is held by a light cable wrapped around the hub of the flywheel the radius of which is 2 ft. If the system is released from rest and the weight has a velocity of 11 ft/sec after 5 s
Under these conditions flow is expected to be turbulent, but for a clean air, very smooth enterance (with guided vanes) to the tube and no tube vibration, it may be possible to maintain laminar flow.
What is the probability that a random sample of 20 time intervals between eruptions has a mean longer than 95 minutes?
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