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In 2010, the Rosetta space probe passed within about 3,000 km from an asteroid known as Lutetia (the Latin name for the city of Paris). The shape of Lutetia can be approximated as spherical, with a diameter of about 100 km and density of 3,600 kg · m?³ . Assume that the mass m of Rosetta at the moment of the closest approach was 800 kg.
What was the magnitude of the force of gravity between Rosetta and Lutetia at the moment of the closest approach? Express your answer in Newtons.
What are the corresponding values of T1 and T2 for q"s = 106 W/m2? If q"s were increased to 1.5 X 106 W/m2, could the foregoing results be extrapolated to infer the corresponding values of !l.Te, T1, and T2?
a feedwater heater uses extracted steam p1500kpax1100 to preheat feedwater t250 celcius p2500kpa. assuming no heat
A steam turbine is operated ith an input temp of 800C and exhaust temp of 150C. What is the maximum amount of work the turbine can do for a given heat input Q? Under what conditions is the maximum achieved?
the pressure in a steam main is 12 bars.a sample of steam is drawn off and passed through a throttling calorimeterthe
a power cycle operates between hot and cold reservoirs at 1000 k and 300 k respectively. for each claimed set of data
Give two advantages and two disadvantages of decentralized and semicentralized peer-to-peer architectures.
water in 50 liter rigid container is initially at 500 kpa and 350c. as the result of heat transfer the water obtains
a horizontal cantilever of length l supports a load w uniformly distributed along its length. the cantilever is proped
air at 27 degc 1 atm and 50 relative humidity enters and evaporative cooling unit consisting of a heating section
the two bars shown in the figure are used to support a load p. when unloaded joint b has coordinates 0 0. after load p
Dislocations are line defects that can be looked as extra half planes inserted into the crystal lattice. Point defects can be defined as edge and screw dislocations
four 4.0 lbm of co2 are contained in a piston-cylinder system. the co2 is initially at a temperature t1500degr and
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