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A two stage rocket with a total mass of 925kg is traveling at a speed of 6.6 10^3 m/s away from the earth . A predesigned explosion separates into two sections of equal mass that move with a speed of 2800m/s relative to each other along the original line of motion.
a) what is the speed and direction of each section relative to earth after the explosion.
b) how much energy was supplied by the explosion .(hint what is the change in kinetic energy due to the explosion?)
Estimate teh excess solids production of an extended aeration process treating unsettled wastewater with a BOD of 200 mg/l and suspended solids concentration of 240 mg/l, assuming k=0.35.
A wastewater is discharged to a stream with a reoxygenation constant of 0.5 day-1 and a velocity of 1 m/sec. The oxygen saturation concentration in the stream is 11 mg/L.
A ssume that one half of the energy incident on the collector goes to this reservoir, which, in turn, serves as a source for a heat engine. If the temperature of the atmosphere is 70 F,
A person who retires at age 62 can receive Social Security benefits of $1537 per month, but by waiting for the full retirement age of 66, the person will receive $2057 per month.
If the brakes are applied uniformly for 5 sec to bring the rig to a stop from a speed of 20 mph while moving down a 10 percent grade, determine the force P in the coupling between the trailer and the truck. The truck weighs 20,000 lbf and the trai..
If log KSO, calcite (CaCO3(s)) = -8.61 at 50 oC, would calcite be over- or under- saturated in a hot water heater at 50 oC if the water was in equilibrium with calcite at 25 oC (log KSO = -8.30) when it entered the house
The pipe contains two 6 in steel elbows, two fully open gate valves, a fully open 90o angle valve, and a swing check valve. If the discharge end of the pipe is located 20 ft higher than the entrance, what is the pressure difference between the two..
Lines of levels were run requiring n instrument setups. If the rod reading for each backsight and foresight has a standard deviation δ what is the standard deviation in each of the following level lines?
Explain how the presence of the collimation error, e, can be detected in a "Two Peg Test" operation.
A concrete mix with a 3-inch slump, w/c ratio of 0.50, and sand with a fine- ness modulus of 2.4 contains 1700 lb/yd3 of coarse aggregate. Compute the required weight of coarse aggregate per cubic yard.
A hydroelectric facility operates with an elevation difference of 50.0 m with a flow rate of 500 m3/sec. If the rotational speed is 90 rpm, determine the most suitable type of turbine and estimate the power output of the arrangement.
Plot variation with depth from the top to Point C for σ' v and σ h when the soil is at rest and Estimate the undrained shear strength (c u ) of clay. (Assume the shear strengths to be 200 kPa and 2 kPa at Liquidity Index (IL) values of 0 and 1, res..
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