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A large 600-m-long, 100-m-diameter, cigar-shaped dirigible is planned for cruises for retired engineers. As a first estimate the drag is calculated assuming it to be a flat plate with zero pressure gradient. Estimate the power required for each of four engines if the dirigible is to cruise at 15 m/s. Assume turbulent flow from leading edge and Vair= 1.5 x 10^-5 m^2/s
a 0.4m3 rigid tank initially contains refrigerant-134a at 14 degree c. at this state 70 of the mass is in the vapour
a piston cylinder arrangement has two compartments a and b filled with water as shown in the figurebelow. compartment a
steel balls 12 mm in diameter are annealed by heating to 1150 k and then slowly cooling to 400 k in an air environment
1.a turbine receives 0.1 kgs of hot air at 55 ms velocity at 1.4mpa and 900k. the air leaves at 225ms and 200 kpa and
consider a pistoncylinder arrangement that has a linear spring mounted such that as the piston rises to a certain point
a catheter is a specialised needle intended for long-term insertion into a vein in a patients arm. engineers are
determine head loss and the power required to overcome it given efficiency 73 power of the pump 12hp height 35ft water
plot the reciprocal lattice for a polycrystalline sample of a material with a simple tetragonal structure and lattice
two heavily insulated tanks are connected by a valve. tank a has a volume of 600l and contains water at 200kpa and
oxygen gas enters a well-insulated diffuser at 30lbfin2 440degree rankine with a velocity of 950 fts through a flow
the 150-lb man lies against the cushion for which the coefficient of static friction is mu s 0.5. determine the
discuss whether the following situations should be modeled as closed systems or open systems. clearly define the
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