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The 300-Mg jet airliner has three engines, each of which produces a nearly constant thrust of 240 kN during the takeoff roll. Determine the length s of runway required if the takeoff speed is 220 km/h. Compute s first for an uphill takeoff direction from A to B and second for a downhill takeoff from B to A on the slightly inclined runway. Neglect air and rolling resistance
A waster water treatment operator runs a sludge volumeindex test in a liter cylinder and finds at the end of 30 minutessettling, the solids occupy 200mL. He knows the suspendedsolids concentration in his aeration tank from which he got thesample is 4..
What is the percentage error in the bulk unit weight if the soil is the percentage error in the bulk unit weight if the soil is 95% saturated but assumed to be 100% saturated
If an additional 11ft lane is added (each direction) and all other factors stay the same, what will be the new level of service?
a section of highway has a speed flow relationship of the form q= au^2 + bu it is known that at capacity ( which is 3100 veh/h) the space-menu speed of traffic is 28 mi/h. determine the speed when the flow is 1500 veh/h and the free flow speed.
A flat rectangular metal plate measures 17.63 + and - 0.02 inches by 26.85 + and - 0.04 inches. A circular hole of diameter 11.42 + and - 0.03 inches is cut out of the plate.
Starting from x = 0 with no initial velocity, the acceleration of a race car is defined by the relation a = 6.8e- 0.00057x , where a and x are expressed in m/s 2 and meters, respectively. Determine the position of the race car when v = 30 m/s.
With a probable maximum allowable foundation pressure of 2000 psf, if column loads of a new building will be approximately 63,000lbs. How wide will a square spread footing need to be in order to carry one column?
velocity of water in the nozzle is given by V=2t/(1-.5x/L)^2. L = 4ft. When x=.5L and t=3s what is the local acceleration along the centerline. What is the convective acceleration.
What percent increase in shear force would be experience on the flat sides of a 40 ft long truck trailer as the truck speed increases from 65 mph to 75 mph. Kinematic viscosity of the air is 1.6x10^4 ft^2/s.
The guy wires AB and AC are attached to the top of the transmission tower. The tension in cable AB is 8.6 kN. Determine the required tension T in cable AC such that the net effect of the two cables is a downward force at point A.
Using a safety factor of 2.00 and neglecting the pile dead weight, find the length of a 1' diameter circular concrete pile required to take a design load of 50 kips in a soil composed of two layers.
A lake with constant volume 10x10^6 m^3 is fed by pollation free stream with flow rate 50m^3/s. fator dumps 5m^3/s of nonconservative waste with concentration
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