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1.A coworker is considering the use of a log linear (power) model using weight to estimate the cost of a missile engine. They have performed the following calculations in log space using natural logarithms. Select the corresponding unit space form of this power model equation.
2.The acceleration of point A is defined by the relation a = -1.08sin kt - 1.44 cos kt, where a and t are expressed in m/s^2 and seconds, respectively, and k = 3 rad/s. knowing that x = 0.16 m and v = 0.36 m/s when t = 0, determine the velocity and position of point A when t = 0.5 s
3.Over a long period, total phosphorus (TP) has been discharged to a lake through sewage and surface water runoff at a rate of 10 tons/day. Measures were then taken to reduce the TP load to 1 ton/day. Assume that TP decays by a first order process with a rate constant of 0.001 days^-1. The volume of the lake is 380x10^8 m^3 with a steady-flow in and out of 500 cms (cubic meters per second).
A Charpy V Notch test was conducted for an ASTM A572 Grade 50 bridge steel. the average values of the test results at four different test temperatires were found to be
The double collar B is pin-connected together such that one collar slides over the rotating rod and the other slides over the horizontal curved rod, of which the shape is described by the equation r= 1.5(2-cos)
A machine shop has just stocked 10 spare parts for the repair of machine, Stock replenishments of size 10 pieces each take place every 7 days. The Poisson breakdown of the machine occurs three times a week on the average.
One method of removing phosphate from wastewater effluents is to precipitate it with aluminum sulfate. A plausible stoichiometry (but not exact because aluminum and phosphate can form many different chemical materials) is
Assuming a gage reading in the approach well(haa) of 13 ft, select a Parshall flume capable ofmeasuring a flow of 700 ft/s without submerging the flow.
An engineering student is driving on a level roadway and sees a construction sign 600ft ahead in the middle of the roadway. The students strikes the sign at a speed of 35mi/h. If the student was travelling at 55mi/h
Assume the following equations for the total benefit and totalcost of a reservoir project as afunction of scale, Q, expressed asmillion gallons water delivered per day(MGD):
A moist soil sample wights 346g.After drying at 105 degree celsius it then wights 284g. the specific gravity of the mass and of the soil is 1.86 and 2.70.
A river with 400 ppm of salts (a conservative substance) and an upstream flow of 25 m^3/s receives an agricultural discharge of 5.0 m^3/s carrying 2000 mg/L of salts. The salts quickly become uniformly distributed in the river
Find the settling velocity of a 20 µm diameter particle with density 1500 kg/m3. If this particle had been hurled to a height of 8,000 m during a volcanic eruption, estimate the time required to reach the ground
A larger-diameter pipeline will cost $2.1 million installed, but its operating cost will be only $8000 per month. Which pipe size is more economical at an interest rate of 1% per month on the basis of an annual worth analysis
Determine the force in member AB Determine the force in member AE Determine the force in member BC Determine the force in member BE Determine the force in member CD
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