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a simply supported beam with a span of 8m is to carry, in addition to its weight, a superimposed dead load of 18kN/m and a live load of 30kN/m both over the entire span.
Hydraulic cylinders with a stroke of 72 inches are available with bore sizes from 2 o 8 inches. Hydraulic piston pumps with an operating pressure range from 200 to 3000 psig are available with pumpi
An engineering student has been given the assignment of designing a hydraulic holding system for a hay baling system. The system has four cylinders with 120 mm diameter pistons with a stroke of 0.32
KNowing that after being snugly fitted, the nut at C is tightened one full turn, determine (a) the tension in rod CD, (b) the deflection of point C of the rigid member ABC
A pickle producing plant produces and discharges a waste brine solution with a salinity of 13,000 mg/L NaCl at a rate of 0.14 MGD into a stream.
A projectile is fired up into the air at a speed of 161 m/s at an angle of 64° relative to the horizontal. Determine the maximum height the projectile will reach.
Each exerts a force of 600 N directed at a t= 20.0° anglerelative to the forward motion of the boat. If the boat moves withconstant velocity, find the resistive force exerted by the water on the
An ocean outfall diffuser that discharges treated wastewater into the Atlantic Ocean is 5,000 m from a public beach. The wastewater contains 10^5 coliform bacteria per milliliter. The wastewater dis
Calculate the mass of the green house gas and ozone depleting substance CFC-11 (chemical Formula = CCl3F) in the atmosphere. Use units of GtC (giga tonnes carbon)
At the Omaha, Nebraska, dock, the minimum demand for casual workers during the 7 days of the week (starting on Monday) is 20, 14, 10, 15, 18, 10, and 12 workers.
Write a brief paragraph summarizing the following Habitat Simulation Method used to analyze environmental flow requirements.
The acrylic plastic rod is 200mm long and 15mm in diameter. If an axial load of 300N is applied to it, determine the change in its length and the change in its diameter. Ep = 2.70 GPa, Vp = 0.4.
Consider a tensile test on polycrystalline copper which has a yield strength of 20,000 PSI and a tensile strength of 40,000PSI. The engineering strain at maximum load in a tensile test was 25%.
A 3105 Aluminum alloy wire is to be drawn to give a 1-mm diameter wire having a yield strength of 20,000 PSI. assume that there is no friction in the wire drawing process
A 0.02wt% C steel is to be carburized at 1200°C in 4 hrs with a point 0.6mm beneath the surface reaching 0.45wt%C. calculate the carbon content required at the surface of the steel.
A Kennedy half dollar has a mass of 1.150 X 10-2 Kg. The coins is a mixture of silver and cooper, and in water weights 0.1011 N. What is the mass of the silver
Link BC is 6 mm thick, has a width w= 25 mm, and is made of a steel with a 480 MPa ultimate strength in tension. What is the safety factor used if the structure was designed to support a 16 kN load
water at 150 degrees in a beaker is placed in an airtight chamber. Air is gradually pumped out of the container. What reduction below atmospheric pressure of 14.7 psi must be achieved before water b
A first order reaction occurs in a PFR at the rate of 2.1 hr^-1. The reactor volume is 1400L and flow is 15 gpm. If the influent concentration is 200 mg/L, then what is the effluent concentration
The James River flows in from the East at 50 m^3/s and joins the Jackson River flowing at 500 ft^3/min just outside Charlotte, NC. The turbidity in the James River is 6.8 NTU.
The James Rives flows in from the East at 320 m^3/min and joins the Jackson River flowing at 605 m^3/min just outside the town of Charlotte, NC. The concentration of BOD in the James River is 14 mg/
Using estimates of rainfall, evaporation, and water consumption, the town engineer developed the following model of the water volume in the reservoir as a function of time
Pure water at 50 degrees Fahreneit stands in a glass tube of 0.04-in diameter at a height of 6.78 in. Compute the true static height.
When the ambient air is at 70 degrees Fahreneit, 14.7 psia, and contains 21% oxygen by volume, 4.5 lb of air are pumped into a scuba tank, capacity 0.75 ft^3. What volume of ambient air was compress