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1.The flowrate in a rectangular channel is 20 m3/s. The width of the channel is 4 m and the depth of flow is 5 m. If there is an increase in the channel bottom elevation (?z) with NO energy loss, what is the maximum value of ?z possible with no increase in upstream flow depth?
2.A baseball is a perfect sphere with a diameter of 0.1 m. A ball player throws this baseball at 100 miles per hour (mph) in standard air. ? air = 1.20 kg/m3 ? air = 1.51 x 10-5 m2/s 1 m/s = 2.237 mph (a) Find the Reynolds number for the motion of this baseball through air. (b) Determine the drag force on the baseball under these conditions in N.
The time between truck arrivals at the station is exponentially distributed with a mean arrival rate of 1.5 veh/min. the time it takes vehicles to be weighed is exponentially distributed with a mean rate of 2 veh/min.
We are analysing energy efficiency of four different cars, A (3.2 miles/kwh), B (42 mpg using Clean Diesel), C (22 mpg using corn based ethanol E85), and D (28 mpg using regular gasoline). Now accounting for all of the energy used, including extra..
A 20-lb package is thrown with a speed of 9 ft/s onto the 100-lb cart at the given angle of 30 degrees. It slides on the smooth cart and strikes the spring. If the spring has a spring constant k= 200 lb/in
The flow depth and velocity before the jumo are 0.8 m and 7 m/s respectively. The flow depth and velocity after the jump are 2.46 m and 2.28 m/s respectivly. Assuming a flat channel, determine a) the energy loss due to the jump, hl (head loss)
radioactive wastes are stored in a spherical type 316 stainless steel tank kss 13 wmk of inner diameter 1 m and 1 cm
determine the components of the 800 lb force f along the oblique axes a and b. also, determine the projections of f onto the a and b axes
Define the f/m ratio in the context of biological treatment of wastewater, and relate the f/m ratio to the exponetial growth and declinign growth phases of a bacterial culture.
the concrete girder supports the two column loads, if the siol pressure under the girder is assumend to be uniform, determine its intensity w and the placement d of the column at B
A circular rc girder for the foundation raft of water tower has dia 10m.the udl load transmittedby 8 coloumn on te girder being 300 kn/m.the width of the beam is 500 mm and the over depth.
a piston-and-cylinder device contains 5 kg of water initially at 150 C and 0.20 MPa. The frictionless piston is then pushed slowly in an isothermal process until the volume of water becomes 10% of its initial value.
A corporation issues a new 10 year bond that has a coupon rate of 4.65% with quarterly dividend payments. Alex purchases 200 of these bonds at a price of $98.75, for a total investment of $19,750. Assuming he holds them to maturity, what will be h..
How fast will it be going when it hits the ground?
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