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Determine the value of the coefficient of restitution e which results in the final velocity being perpendicular to the initial velocity v.
A 25-mm-diameter shaft .5 m long is pulled through a cylindrical bearing. The lubricant that fills the 0.3-mm gap between the shaft and bearing is an oil having a kinematic viscosity of 8.0 × 10-4 m2/s and a specific gravity of 0.91.
One of the wells pumps at a rate of 1240 m3/ day and the second well pumps at 850 m3/ day. If the aquifer has a transmissivity of 2000 m2/ day and a storage coefficient of 4 x 10^-4, when would the wells start interfering with each other
A machine costs $20,000 and has a 5-year useful life. At the end of the 5 years, it can be sold for $4,000. If annual interest is 8%, compounded semiannually, what is the equivalent uniform annual cost of the machine
A sample of soil was compacted into a 945 ml.laboratory mold. The mass of the compacted soil was 1850 grams and its moisture content was 13.1%. Specific gravity of solids is 2.70, Compute the moist unit weight, dry unit weight, and degree of satu..
If 30% of supplied water is retained within the consumption areas ( as garden water,...) determine daily average, daily maximum and daily minimum of wastewater using both tabulated coefficients and Gift's formula for peaking factor. N.B. Conduit I..
Which of the following is true for a thermistor with a negative temperature characteristic A) Decreasing temperature produces decreasing resistance in the thermistor. B) Increasing temperature produces decreasing resistance in the thermistor.
A 5 cm diameter, 6 m high pole is fixed in concrete. The pole supports a circular 4 m diameter sign. Estimate the maximum moment that must be resisted by the concrete for a wind speed of 30 m/s (wind is assumed normal to the sign; density of air = 1...
A steel plate which is 1.5 m by 1.5 m and 30 mm thick is lifted by four cables attached to its corners that meet at a point that is 2 m above the plate. Determine the required cross sectional area of the cables
Quinton's refrigerator has just died. He can get a basic refrigerator or a more efficient refrigerator with an energy star designation. Quinton earns 4% compounded annually on his investments, he wants to consider a 10-year planning horizon
draw a flow net. show flow lines flow channels and equipotential lines. using flow nets please provide an estimate of
Disregarding frictional losses, determine the highest rate of heat transfer to the air in the duct without affecting the inlet conditions.
After lunch, they start shoveling snow and burn calories at a rate of 360 Cal/h for the woman and 480 Cal/h for the man. Determine how long each one of them needs to shovel snow to burn off the lunch calories
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