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Determine the distance s to which 90 kg painter can climb without causing the 4m ladder to slip to its lower end A .The top of 15 kg has a small roller and at the ground the coefficient of static friction is 0.25. The mass center of the painter is directly above her feet.
A 1.50 L buffer solution is 0.250 M in HF and 0.250 M in NaF. Calculate the pH of the solution after the addition of 0.0500 moles of solid NaOH. Assume no volume change upon the addition of base. The Ka for HF is 3.5 x 10-4.
A soil borrow material in its natural state in the ground has a unit weight of 118pcf. Its natural water content is 7%. What is the dry unit weight of this material?
A 6 lane highway has 12 ft lanes and a crown cross-slope of 0.02 ft/ft. The design speed of the road is 60 mph. The station of the PC is 20+00. Determine the station of the point where th superelevation runoff begins
A barge has the trapeziodal shape and is 22 m long into the paper. If the total weight of barge and cargo is 350 tons, what is the draft H of the barge when floating in sea water
A company issues corporate bonds that have a coupon rate of 4%, pays dividends quarterly, and has a term of 10 years. Compute the dividend paid per quarter for each bond.
At a point in a saturated normally consolidated clay layer the soil is subject to an in-situ vertical effective stress of 50kPa. The soil at the point has a moisture content of 44% and a compression index of 0.45. The effective stress at the point is..
Calculate the pressure p and the force T per linear mm along the (imaginary) longitudinal seam in the pipe at a point that is 100 metres below the open (free) water surface of the reservoir.
Estimate the power needed to overcome the aerodynamic drag of a person who runs at a rate of 100 yds in 10 s in still air. repeat the calculations if the race is run into a 20-mph headwind: a 20-mph tail wind.
Why fresh water is required to be fed into this process? Why the recycle stream is included?
determine the tangential component of the acceleration of the sled a) just before it reaches B, b) just after it passes C.
There are 10 vehicles in a queue when an attendent opens a toll booth. Vehicles arrive at the booth at a rate of 4 vehicles per minute. The attendent opens the booth and improves the service rate over time following the function u(t)= 1.1 +0.3t, wher..
Sewage flows through a 12" diameter pipeline then through an 18" diamenter pipeline. The flow is the same (unknown) value in each pipe, and the slope is the same (unknown) contant value for both pipes.
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