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A polymer that contains internal flaws 1.5 mm in length fails at a stress of 30 MPa. Determine the plane strain fracture toughness of the polymer. Assume a polymer specimen of "infinite" width.
A turbine discharges water at 0.4 m3/s under a head of 10.50 m and with an overall efficiency of 80 %. determine what is The power developed.
(a) Use differentiation to find a general expression for the rocket's velocity as a function of time, (b) When is the velocity zero?
A very small country has just gained independence in the year 2000, at which time its population was 1,000. The new country has a birth rate of 0.02 yr-1, death rate of 0.004 yr-1, immigration rate of 0.01 yr-1, and emigration rate of 0.005 yr-1.
Assuming an isotropic and homogenous hydraulic conductivity of 0.0001 cm/s what is the magnitude and direction of specific discharge (q)?
Determine the mass and specific volume of argon gas in a vessel at 150 kPa and 20°C. The vessel is spherical, with radius 5 m.
An entrepreneurial new civil engineering graduate started a lab for testing endocrine disrupting compounds. The lab just broke even the first year, but in years 2 through 5, it made a profit of $97,000 each year.
Also calculate the deflection of the beam to check that it complies with the design limit of L/200. Only variable actions are required for deflection check.
A company that manufactures regenerative thermal oxidizers made an investment 10 years ago that is now worth $1,300,000.
The soil will be excavated from the borrow pit, moistened to increase the water content to 13.5% (assume i will not change the volume of solid mass) and then compacted to a final dry unit weight of 118 pcf.
in an air standard otto cycle , the air at the beginning of the compression stroke is at 95 kpa and 22c ,and the cylinder volume is 0.0028 m^3 . the compression ratio is 9 and 4.3 kj are added during the heat addition process
Given an 18-in. concrete conduit with a roughness coefficient of n = 0.013, s = 0.02, and a discharge capacit of 15 cfs, what diameter pipe is required to triple the capacity
You borrow $1000 and pay off the loan with interest after 4.5 years. The amount paid is $1500. What is the effective annual interest rate for this loan. Use a 6 month interest period.
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