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The skier leaves the 20 degree surface at 10 m/s. (a) Determine the distance d to the point where he lands. (b)What are the magnitudes of his components of velocity parallel and perpendicular to the 45 degree surface just before he lands?
A coal-fired power plant produces a net electrical output of 500 MW. The composition of the coal burned is C= 72 %, H= 6 %, S= 3.5 %, O= 6 %, N= 1 %, and ash= 12 % by weight. It's heating value (HV) is 30200 kJ/kg. The net thermal efficiency is 36..
The force exerted on the hand causes torsion of the humerus. Let us assume the cross-section of this wrestler's humerus is approximated as hollow (the marrow has little structural strength) with an outer diameter of 19.0 mm and an inner diameter o..
The center 0 of the wheel is mounted on the sliding block, which has an acceleration of a0= 8 m/s2 to the right. At the instant when theta=45 degrees, theta dot is = 3 rad/s and theta double dot is = -8 rad/s2.
A nuclear facility in a coastal region is built to withstand ocean wave forces. Suppose the annual maximum wave height of the ocean waves (above the sea level) is a lognormal random variable with mean height of 4.0 meters and a c.o.v. of 0.8
The tunnel is supplied with 1500 kg dry air/h at 50°C and 10% RH, and the air leaves at 25°C in equilibrium with the product at 50% RH. Determine the moisture content of product leaving the dryer and the final water activity.
Consider a piston/cylinder arrangement that has a linear spring mounted such that as the piston rises to a certain point it will encounter the spring, which will offer a downward component of force as the piston rises further.
An experiment was conducted to determine the hydraulic conductivity of an artesian aquifer. The piezometric heads at two points 150m apart were found to be 55 m and 48.5 m above a datum.
A 110 cm^3 sample of wet soil has a mass of 106 g and a degree saturation of 100%. When oven-dried, the mass is 81 g. Determine the 1) water content, 2) specific gravity, 3) void ratio, and unit dry weight of soil particles.
A gate (shaped like .25 of a cylinder with radius R=3m) is used to control the flow of water through a canal.The height of the water in the tank is 30m. How much force must be applied to keep the gate from opening? The gate is 30m wide.
Briefly explain the difference between piezometer and tensiometer with respect to the working principle, special design consideration and limitation of the instrument.
On a particular highway, a permanent speed measuring device at one particular location has determined, over many months of observations, that the mean and standard deviation of vehicle speeds at that point are 52 miles per hour and 4 miles per hou..
A quartzite sample in a compression testing machine is 180mm long and 54mm in diameter. what is the stress under a load of 100kN? if the modulus of elasticity is 102kN/mm2, find the strain develope in the sample.
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