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A ball is released from rest relative to the elevator at a distance h1 above the floor. The speed of the elevator at the time of ball release is υ0. . Determine the bounce height h2 of the ball (a) if υ0 is constant and (b) if an upward elevator acceleration α = g/4, begins at the instant the ball is released. The coefficient of restitution for the impact is e.
A sand sample has a porosity of 38% and specific gravity of solids of 2.66. Find the void ratio and wet unit weight in lb / ft3 if the degree of saturation is 35%.
The steel rails of a continuous, straight railroad track are each 60 ft long and are laid with spaces between their ends of 0.25 inches at 70 degrees F. At what temperature will the rails touch end to end? What compressive stress will be produced in ..
In accordance with BCA, what are the assessment methods and how may they be used to determine that a building solution complies with the performance requirements?
A plane gate of uniform thickness holds back a depth of water as shown. Find the minimum weight need to keep the gate closed. theta=30degrees L = 3m w = 2m
The rigid bar abcd is supported by a pin at B and restrained by identical steel bars at C and D, each of area 250mm 2 . if the temperature is increased by 8 0 C, find out the force P that will cause the bar at c to be stress-free.
Write a MATLAB code to visualize the bilinear functions (N1, N2, N3, N4) of a 4-node quadrilateral element in the natural domain. In your code use the MATLAB function surf
A wastewater treatment plant produces 34, 500 pounds of secondary sludge each day. Wastewater flows into the plant at a rate of 5.6 MGD and has an influent BOD of 325 mg/L. How many pounds of BOD are destroyed by this plant each day
Consider a box model for an air shed over a city that is 1 X 105 m on a side, with a height of 1200 m induced by a temperature inversion. Winds with no SO2 blow at 4 m/s agains one side of the box.
Determine the average normal stress in the links
A car is travleing towars a 20 degree slope at 60 mph. The wheels have a radius of 12 in. and the car's wheelbase is 100 in. What is the angular rotation rate of the car immediately after the front wheel contacts the slop
If this rod is to be used again with an initially straight axis, determine the maximum permissible deflection that may be allowed during testing procedures. Young's Modulus = 210 kN/mm2 and Yield stress of the steel= 240 N/mm2.
For an interest rate of 12% per year compounded every 2months, determine the nominal interest rate per (a) 4 months (b) 6months, and (c) 2 years
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