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An arcjet delivers 0.26 N of thrust. Calculate the vehicle velocity increase under gravitationless, dragless flight for a 28-day thrust duration with a payload mass of 100 kg. Take thruster efficiency as 50%, specific impulse as 2600 sec, and specific power as 200 W/kg. This is not an optimum payload fraction; estimate an Is which would maximize the payload fraction with all other factors remaining the same.
What is the degree of a binary, minimal polynomial of a primitive 17-th root of unity .How many such polynomials do exist? Prove that each is its own reciprocal. Determine these polynomials explicitly.
Why natural convection and radiation to the surroundings. Taking the body temperature 0.5 cmbeneath the skin to be 37°C, determine the skin temperature of the person.
ENSC3019 - Determine the percentage of mass transfer resistance in gas film out of the overall resistance - determine the height of the packings (m), based on the above information.
If one of the machines has its field excitation adjusted such that it delivers 125 A lagging current, determine the armature current, power factor, excitation voltage, and power angle of each machine.
describe the principles of a vapour adsorption refrigeration system and compare this to a vapour recompression system.
The critical temperature and pressure of acetonitrile are 548 K and 47.7 atm, respectively.
For the a-b-c phase sequence, take t = 0 at the instant when the flux linkages with the a-phase are maximum.
Select a set of eigenvectors and determine the state feedback gain matrix that assigns the desired eigen structure. Verify that the closed-loop state matrix has the correct eigenstructure.
The batch fermentation of glucose to glutamic acid using Brevibacterium divaricate is described in detail in US patent 2,978,384. In Example I in the patent a 10.5 wt% glucose feed was fermented for 72 hours at 30 °C
Job Analysis of a Chemical Engineer, Develop documentation for human resources professionals to manage a specific employment position. The materials you create would assist human resources professionals to choose
A well is producing from a saturated oilreservoir with an average reservoir pressureof 3000 psig. Stabilized flow test dataindicates that the well is capable of producing400 STB/day at a bottom-holeflowing pressure of 2580 psig.Calculate the remai..
The fictitious compound, pandemonium fluoride (PnF2) has a Ksp value in water of 3.091×10-9M3 at room temperature. Calculate the solubility of PnF2 in water. Express your answer in units of molarity.
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