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The elastic ball bounces down a flight of rigid stairs. Determine the height h of the steps if all the trajectories between successive steps are identical. Use e = 0.85 and the initial velocity 6 m/s.neglect friction. (Theta=70 degrees)
A small chunk of the original sample had a wet weight of 140.9 grams and weighed 85.2 grams after drying. Compute the water content, using the correct number of significant figures.
The 75 lb block is released from rest 5 ft above the plate. Determine the compression of each spring when the block momentarily comes to rest after striking the plate.
A soil sample with a water content of 14.5% and unit weight of 128.2 lb/cu. ft. was dried to a unit weight of 118.8 lb/cu. ft. without changing its void ratio. What is its new water content (in %)?
At what temperature does the liquid solidify? What is the composition of this last remaining liquid phase?
Calculate the force (in Kn) a punch press must exert if it is to punch out a large washer from a strip of 5-mm thick sheet steel with an ultimate shear strength of 400 MPa.
Compute points on the velocity profile from the pipe wall to the centerline of a 3/4-in Type K copper tube if the volume flow rate of water at 60 degrees F is .50 gal/min.
Identical bricks 0.1m wide, and weighting 2kg are placed on a plate (assume the plate has neligible weight). Calculate the total weight (and force F required to balance the plate).
Describe the crystalline or atomic structure of the following minerals: 1) Brucite 2) Gibbsite 3) Bentonite 4) Illite
Give one possible characteristic or property of sanstone and of the quartzite that made you decide not to select it for your concrete project?
The maximum gage pressure is known to be 8MPa in a spherical steel pressure vessel having a 250mm diameter and a 6mm wall thickness. Knowing that the ultimate stress in the steel used is (sigma u)= 400MPa, determine the factor of safety with respe..
A Silane contains 90.31 % silicon and 9.69 % hydrogen by mass. The compound has a molar mass of 62 g/mol. Determine the compound's empirical and molecular formula.
How does aggregate size influence the coefficient of permeability of concrete? List other factors that determine the permeability of concrete in a structure.
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