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An engineer has to design a rod made with the same steel to carry a load of 150 kips without yielding. He desires to have a factor of safety against yielding of 1.5. What should be the cross-sectional area of the circular rod? Show all of your calculations.
Assume any un-given information to be variables
What is the TCE concentration in ppm if the tank is held at (a) 4 degrees C and (b) 35 degrees C (c) What is the TCE concentration in ppm if the tank is filled with hexane instead of water
The density of an ideal gas decreases by 10% when compressed isothermally from 10 atm to 11 atm. Determine the percent decrease in density of the gas if it compressed isothermailly from 1000 atm to 1001 atm.
The center to center spacing to the two tanks is 14 m. The new tank imparts 150 kPa at the ground surface. Find the increase in vertical stresses due to the weight of the two tanks mid- way between the two tanks at the center of the clay layer.
A 12kw (shaft output) motor is available to run a non-cooled compresor for helium. The pressure is to be increaded from 80 kPa to 120 kPa. If the compressor is 70% efficent, calculate the volume flow rate into the compressor.
Calculate carbonate, noncarbonate, and total hardness Na+ = 27.8 mg/L Cl- = 35.6 mg/L Ca+2 = 48mg/L CO3-2 = 30 mg/L Mg+2 = 12mg/L HCO3- = 61 mg/L K+ = 12 mg/L SO4-2 = 48 mg/L
How many trips would one rubber-tired Herrywampus have to make to backfill a space with a geometrical volume of 5400 cubic yard. The maximum capacity of the machine is 30 cubic yard (heaped), or 40 tons.
During the following day the sun melts the ice cover. Determine the new depth if the flow rate remains the same and the surface roughness of the ice is essentially the same as that for the bottom and sides of the river.
This project is expected to have a first cost of $2,000,000 and an annual maintenance cost of $50,000. In addition, major repairs costing $250,000 will be required after 25 years and each 15 years thereafter.
If an 18.9 L (5 gallon) bucket of PCE is released (and equally distributed) into a 3.79x10^8 L (100,000,000-gallon) aquifer, will the PCE standard of 5 microgram/L under the Safe Drinking Water Act be exceeded
A car dealership offers $2000 cash back; financing at 3.49% APR for 60 months or 0% APR for 60 months when you purchase a car. What is the break even point and when would it be better to choose one option over the other.
A more conservative increase from 27.5 mpg in 2011 to 35 mpg by 2020 is supported widely in Washington. California and 13 other states + the District of Columbia hope to increase that stander to 35 mpg by 2017 and 40 mpg by 2020.
The 3.5-Mg engine is suspended from a spreader beam having a negligible mass and is hoisted by a crane which exerts a force of 40 kN on the hoisting cable. Determine the distance the engine is hoisted in 2.4 s, starting from rest.
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