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A large spacecraft has a mass of 125,000 kg. Its orbital maneuvering engines produce a thrust of 50 kN. The orbiter is in a 400 km circular earth orbit. A delta-v maneuver transfers the spacecraft to a coplanar 300 x 400 km elliptical orbit. Neglecting propellant loss and using elementary physics (linear impulse equals change in linear momentum, distance equals speed times time), estimate
(a) the time required for the Dv burn and
(b) the distance traveled by the spacecraft during the burn.
(c) Calculate the ratio of your answer for (b) to the circumference of the initial circular orbit.
(d) What percent of the initial mass was expelled as combustion products?
Create a detailed Risk Assessment for the Project Team. Assessing each risk involves determining the likelihood that the risk eent will occur and the degree of impact the event will have on the project. Each of these factors can be assigned a rating..
Master Card has a series of cute commercials that list a series of accounting items and costs leading to a priceless product. Cell phones are often advertised as being free. In economics, it is said that nothing of value is either free or priceles..
toms pizza sells for 5.00 ea and serves an average of 425 customers per week. during a recent sale tom lowered the
The State Department of Transportation has called for tenders to supply 10,000 gallons of blue reflective paint to be delivered within two months. You can foresee fitting in a production run of the blue paint and have decided to bid on the job.
Suppose a market is characterized by a unionized and a non-unionized sector. Both sectors initially have supply given by Q=10,000+25w, and demand by Q=20,000-10w,
choose an industry you have not yet written about in this course and one publicly traded corporation within that
A monopolist has two types of customers. There are 100 of TYPE A, who will each pay up tp $10 for a single unit of the good, and 50 of TYPE B, who will each pay up to $8.00.
Briefly discuss the contractual clauses that you would offer retailers--and to which the retailers would agree--in order to accomplish your goals.
In the Google search space, type "alcohol." Use the titles and summaries of the papers to answer the following questions relating to elasticity: Do the mentally ill have perfectly inelastic demands for cigarettes and alcohol?
Calculate the money multiplier for Dec 2006, one year prior to the Great Recession. Please show all work.
1. the owner of a small car-rental service is trying to decide on the appropriate numbers of vehicles and mechanics to
the chapter notes that the rise in the u.s. trade deficit during the 1980s was due largely to the rise in the u.s.
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