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1.Due to a crash at a railroad crossing, an overpass is to be constructed on an existing level highway. the existing highway has a design speed of 50 mi/h. The overpass structure is to be level, centered 26 feet above the railroad, and 180 feet long. How much existing highway (in feet) must be reconstructed to provide appropriate vertical alignment?.
2.A ferryboat queuing lane holds 40 vehicles. If vehicles are processed (tolls collected) at a uniform deterministic rate of 5 vehicles per minute and processing begins when the lane reaches capacity, what is the uniform deterministic arrival rate if the vehicle queue is cleared in 35 minutes after vehicles begin to arrive (in veh/min.)?
A bacteria culture grows with constant relative growth rate. After 2 hours there are 600 bacteria and after 8 hours the count is 75000 a.) Find the intitial population.
The height (in meters) of a projectile shot vertically upward from a point 2 m above ground level with an initial velocity of 24.5 m/s is h2+24.5t-4.9t^2 after t seconds. a) When does the projectile reach its maximum height? b) What is the maximum..
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
Water flows in a 100-m long pipe at 3 m/s. If the water temperature is 20 degrees C, determine the minimum valve-closure time to avoid creating the water-hammer pressures. What is the maximum water-hammer pressure that can occur
Three shafts and four gears are used to form a geartrain which will transmit 7.5 kW from the motor at A to a machine tool at F. (Bear- ings for the shafts are omitted from the sketch.) Knowing that the frequency of the motor is 30 Hz
The structure consists of a wood frame with plywood roof deck, wall sheathing and floor deck. general form of the building construction is to be determined by the designer.
Determine the compressive strengths of the following
Air enters an adiabatic compressor at 100 kPa and 17 degrees C at a rate of 2.4 m^3/s. It exits at 257 Degrees (C). The compressor has an isentropic efficiency of 84%. Neglecting the changes in kinetic and potential energy
To imagine the diagram, the collar at point A (unstretched) is on the same x-axis as the anchor @ C, while the collar point B (stretched) is located downwards-left to point A, forming a 30 degree angle with the y-axis (vertical). In other words, the ..
If the elevation difference between the water surfaces is y = 25 + x/11 metres, what minimum pipeline diameter will be required to convey the design discharge? Once your design is complete, determine the actual discharge. The value of x equals 23.
The area shown is revolved about the x axis to form a homogeneous solid of revolution of mass m. Using direct integration, express the mass moment of inertia of the solid with respect to the x axis in terms of m and h
a cu triaxial test with sigmac 20 psi is performed on a sand and a deviator stress of 80nbsppsi fails the specimen.
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