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1.a) Show that the c/a ratio (height of the unit cell divided by its edge length) is 1.633 for the ideal hcp structure.
b) Comment on the fact that real hcp metals display c/a ratios varying from 1.58 (for Be) to 1.89 (for Cd)
2.A 1200 ft. equal tangent crest vertical curve is currently designed for 50 mi/hr. A civil engineering student contends that 60 mph is safe in a van because of the higher driver’s eye height. If all other design inputs are standard, what must the driver’s eye height in the van be for the student’s claim to be valid?
which design checks that are performed on a rectangular clarifier are not performed on a circular clarifier
A NCSU student turned on his/her 150 W fan inside his/her room, 4m * 6m * 6m, before going to class in the morning of a summer day, excepting to find his/her room cooler when he/she returns at night.
For Oil (SG=0.86, u=0.025 Ns/m^2) flow of 0.3m^3/s through a round pipe with diameter of 500 mm, determine the Reynolds number. Is the flow laminar or turbulent
A permanent endowment at the University of Alabama is to award scholarships to engineering students. The awards are to be made beginning 5 years after the $10 million lump-sum donation is made.
Assume the specific gravity is 2.7. Given this information, determine (a) the phase diagram of the soil, (b) the void ratio, (c) the porosity, (d) the dry density, and (e) the saturated density.
What is the shear rate in the water between a sliding and standing plate, if V = 10 ft/s is the moving plate velocity and 0.1 in. is the distance between the plates
Five organic compounds (A through E) were tested for suitability for biofiltration control. Their retardation ratios (in order) were 5, 8, 13, 21 and 34.
A compression member is subjected to service loads of 165 kipsdead load and 535 kips live load. The member is 26 feet long andpinned at each end. Use A992 steel and select a W14shape.
The installation of a radon abatement device is recommended in any home where the mean radon concentration is 4.0 picocuries per liter (pCi/L) or more, because it is thought that longterm exposure to sufficiently high doses of radon can increase t..
draw a flow net. show flow lines flow channels and equipotential lines. using flow nets please provide an estimate of
The diffrence b/n the sum of angles of a plane triangle and the sum of angles of sph triangle is one second. when the triangle on the earth surface has an area of about
(1) a constant wind velocity that is twice the mean wind velocity and operating half the time; and (2) a constant wind velocity that is three times the mean wind velocity operating one-third of the time.
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