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An adiabatic argon unit compresses argon at 200 kPa and 27C to 2.18 MPa. If the Argon leaves this compressor at 513C.What is the isentropic efficiency of the compressor?
Estimate the time when the temperature at the geometric center of a 6 cm diameter apple held in 2`C water stream reaches 3oC. The initial uniform temperature of the apple is 15`C.
Nairobi has a birth rate of 3.3 individuals per individual per year and a death rate of 3.2 individuals per individual per year. If the carrying capacity were 105, what would the population be in 25 years
What is the span length of a uniformly loaded simple beam with a wide-flange cross section if the maximum bending stress is 12,000 psi, the maximum deflection is 0.1 in, the height of the beam is 12 in
The 30-Mg freight car A and 20-Mg freight car are moving towards each other with the velocities of VA= 20km/h and VB=10 km/h. A spring mounted on A has k=3 MN/m Determine the maximum compression of the spring mounted on car A.
The frame ACD is hinged at A and D and is supported by a cable that passes through a ring at B and is attached to hooks at G and H. If the tension in the cable is 1125 N (thus 1125 N in section BG and 1125 N in section BH)
How many short tons of coal are required by this plant per year, assuming it operates continuously? If 10% of the coal mass remains as residual ash, how many tons will develop in the ash pile over 25 years?
A pipe is to be installed under the ground on a bed of aggregate 6 in. thick. The entire weight on the aggregate from pipe and soil above the pipe is 1800 lbs. per linear foot of pipe. What is the pressure on the soil if theta is 45 degrees
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.
Given s=.30/(60-u), where s is the spacing (space headway) in miles, and u is the speed in miles per hour, derive the relationships u-k, u-q, and q-k. Also, estmate the capacity (qmax) of the roadway.
Water flows down a spillway at the rate q = 15 m^3/s into a horizontal channel where v1 = 20 m/s. Determine the depth of flow in the channel y2 that will casue the hydraulic jump to occur in the channel. Determine the headloss hL in the jump.
Design a Portland cement concrete mix for a loading dock driveway slab. The concrete will be exposed to deicing chemicals and subjected to freezing and thawing in a moist condition. This is severe environmental exposure.
number 9 compression bars in a column are to be lap spliced. there is no excess steel, and the bars are enclosed by a spiral of 3/8 inch diameter wire having a pitch of 3 inch.
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