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Air flows into a convergent-divergent nozzle with an exit area of 1.59 times the throat area of 0.005 m2. The inlet stagnation state is 1 MPa, 600 K. Find the back pressure that will cause subsonic flow throughout the entire nozzle with M = 1 at the throat. What is the mass flow rate?
The National Institute for Occupational Safety and Health (NIOSH) sets standards for CCl4 in air at 12.6 mg/m^3 of air (a time average over 40 hr). The CCl4 found in a sample is 4800 ppb. Does the sample meet the NIOSH standard
Offer an explanation as to why covalently bonded materials are generally less dense than ionically or metallically bonded ones.
An eighteen inch diameter sandstone column is subjected to an axial compressive force of 2x10^6 lb / ft. Find the factor of safety based on the ultimate compressive force. For the ultimate compressive stress of sandstone=85Mpa.
The length of the cord is 1050 mm, and the effects of the radius of the small pulley A may be neglected.
A C10x20 catilever beam is 12 feet long, supported on the right side. The beam supports two point loads: Load 1 is 2500 lbf and is located 2.5 feet from the wall. Load 2 is 1300 lbf and is located 12 feet from the wall.
A drop of water forms under a solid surface. assume the drop has the shape of a hemisphere just before seperating. find an expression for the diameter, D
Determine the maximum rimpull of the tractor in each of the indicated gears if the efficiency is 92%. If the tractor is operated over a haul road whose slope is +2.5% with rolling resistance of 80 lb/ton
what is the expected standard error of the misclosure in the sum of the angles for an eight-sided traverse?
The horizontal ground lengths of a three-sided closed-polygon traverse were measured in feet as follows: AB = 501.92, BC = 336.03, and CA = 317.88 ft. If the average orthometric height of the area is 4156.08 ft and the average geoid separation is ..
A torque of T = 3.00 kN-m will be applied to the hollow thin-walled aluminum alloy section. If the section has a uniform thickness of 4 mm, determine the magnitude of the maximum shear stress developed in the section.
Given for a simple curve: R = 500 ft, I = 58º08'40" and the station of the PI is 38+17.25. Set up the field notes for staking out the curve with deflection angles and incremental chords.
Determine the normal force, shear force and bending moment diagrams for the frame. Part AC is subjected to a distributed load which varies linearly in intensity
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