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The station of the PC is 20+00. Determine the station of the point where th superelevation runoff begins, the station whe the tangent runoff begins and the station where the curve is fully superelev
A model grain dryer is being used to investigate the drying process. It is discovered that the load cell which supports the dryer indicates that the mass of the dryer and its contentsinitially incre
A business wishes to discharge salt into a river. the concentration of salt from the business is 210 mg/L. the flow of water in the river (upstream) is 0.5 m^3/s. Upstram the concentration of salt i
At 100 km downwind (y=10m), what is the concentration of NOx in g/m^3. The wind speed at the top of the stack with a height of 100m is 6.5 m/s and an inversion layer of 750m Pressure air = 95kPa
The rivets are 10 mm in diameter, spaced a distance s = 24.4 mm apart, and have an average shear strength of 35 MPa. Determine the maximum internal pressure in MPa if the rivets are not to shear.
Is it possible to have a copper-silver alloy of composition 50 wt% Ag-50 wt% Cu that at equilibrium, consists of α and β phases having mass fractions Wα = 0.6
an incident occurs on a freeway that has a capacity in the northbound direction, before the incident, of 4000 veh/h and a constant flow of 2900 veh/h during the morning commute.
A 2,000 lb uniformly-weighted crate is attached by light, inextensible cables to the truss. Simply determine the support reactions at A and E of the truss
find teh minimum speed at which the train could pass over the tank and lift water up to teh full 4 m height. (hint: consider the locomotive to be stationary and neglecting all losses)
A power plant operates a regenerative Rankine cycle with a reheat, one closed and one open feedwater heater and has a net power output of 1.2 x 109 Btu/hr.
A plane can fly 305 mph in still air. If it can fly 185 miles downwind in the same amount of time it can fly 120 miles upwind, find the velocity of the wind.
An early NASA/DOE wind turbine consisted of a 125.0-ft diameter, two-bladed horizontal axis rotor. Maximum power was achieved at a wind speed of 19.0 miles/hr.
A section view of a dam shown and water is stored at an elevation of 6 m above the base. the water flows through the dam in a concreate opening 2m high and 3 m wide. there are no losses or friction.
a reinforced concrete beam with a section of 12 inches width and 24 inches depth is reinforced with 3no. 9 bars. fc'=5000psi and fy=60000psi. a 2 inch cover is used and the beam has a simply support
A colonist spaceship is a cylinder 3000m long and has a radius of 300m. The ship is spinning so the colonists experience gravity on the 'barrel'. No one lives on the end.
Assuming the center of gravity of the student aligns with the axis of the pole and the pole has an elastic behabior, how high can they climb (in meters, m) just before the pole buckles
The uniform 30 kg bar OB is secured to the accelerating frame in the 30 degree position from the horizontal by the hinge at O and roller at A. if the horizontal acceleration of the frame is a equals
At the same instant the frame h, not the horizontal blade, rotates about a vertical axis with a constant angular velocity w=0.9 rad/s, measured relative to h
The flywheel of a prototype car engine is under test. The angular position of the flywheel is given by x = (3.0rad/s3)t3 and the diameter of the flywheel is 36cm.
A left-turn movement has a maximum arrival rate of 200 veh/h. The saturation flow of this movement is 1400 veh/h. For this approach, the yellow time is 4 seconds, all red time is 2 seconds and total
Design a circular radial-flow clarifier for a town with a projected population of 45,000. Assume that the wastewater flow is 400 L/capita-day. Size the system for a 2-hr detention time at average fl
The coal-fired boilder supplies 70 MW to the steam while thermal energy is rejected to a nearby lake whos average temperature is 15 C. What is the minimum required temperture of the boiler to meet t
Three point loads 10,000, 7500 and 9000 kN act in line 5m apart near the surface of a soil mass. Calculate the vertical stress at a depth of 4m vertically below the centre (7500kN) load.
determin the force in memebers de, hg and he of the trees and state if the members are in comperhemsion
A small aircraft with a wing area of 250 ft2 and a weight of 2200 lb has a lift coefficient of 0.4 and a drag coefficient of 0.05. 1) How much power is required to maintain straight and level flight