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A roadway has a 4% grade intersecting a -7% grade at at station 18+50.00. The grades are connected by an 800 foot vertical curve. A sign is proposed to be installed at Station 15+00.00. The bottom of the sign is 7 feet above the roadway. For drivers heading from Station 40+00 to Station 10 + 00, when will they be able to see the full sign? Assume a driver's eye is 3 feet above the surface of the roadway.
an observer has determined that the time headways between successive vechile on a section of the highway are exponentially distributed and that 65% of the headways btw vehicles are 9 seconds or greater.
Sketch a streamline, pathline, and streakline, For a given flow the velocity from time t=0 to t=5s was u=2 m/s, v=0. Then from t=5s to t=10s the velocity was u=+3 m/s, v=-4 m/s. A dye streak was started at t=0
The member is 24ft long with pinned end supports and is laterally supported in the weak direction at the one-third points of the total column length. Use 50 ksi steel.
air flows through a horizontal iron tube (e=0.15m) at Q=5.7x10-2 m3/s. find the pipe diameter if the pressure drop is 3.5kPa per 30.5m of pipe. air density = 1.23kh/m3 dynamic vicosity = 1.79 x 10-5 N.s/m2)
A simple steam power plant operates at steady state with water circulating through the components with a mass flow rate of 100 kg/s. Stray heat transfer, kinetic energy and potential energy effects are negligible.
The blower on an air conditioning unit produces 80 cubic feet per minute of air in the ductwork. What is the air flow in cubic meters per hour
The velocity of the bed is limited to a maximum value of 150mm/s to the right and 300mm/s to the left; the acceleration is successively equal to 150mm/s^2 to the right, zero 150 mm/s^2 to the left, zero, etc.
Sketch and annotate the wedge described above.
Consider your cooking gas contains 80% propane and 20% butane. While burning on a cooktop, assume it burns with 200% excess air. If no heat is lost, determine the maximum possible flame temperature.
A sample of dry soil is mixed uniformly with 16 wt% water and then compacted into a cylindrical mold in the laboratory. The volume of moist soil is 1x10-3 m3 and its mass is equal to 1.60 kg.
Natural gas is stored in very large vessels consisting of a floating tank and a liquid seal. The pressure in the tank is constant because the weight of the floating tank is constant. In the morning, the temperature of the natural gas is 300 K.
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.
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