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A large two-stage liquid rocket with mass of 30,000 kg is to be launched from a sea-level launch pad. The main engine burns liquid hydrogen and liquid oxygen in a stoichiometric mixture at 2450 kg/s. The thrust nozzle has an exit diameter of 2.6 m. The exhaust gases exit the nozzle at 2270 m/s and an exit plane pressure of 66 kPa absolute. Calculate the acceleration of the rocket at liftoff. Obtain an expression for speed as a function of time, neglecting air resistance.
a piston-cylinder device with a set of stops on the top initially contains 3 kg of air at 200 kpa and 27 degrees
write a matlab program in a script file that finds a positive integer n such that the sum of all the integers 1 2 3
at the beginning of the compression process of an air-standard diesel cycle operating with the compression ratio r 18
electronic components mouted on a flat plate are cooled by convection to the surroundings and by liquied water
a counter flow heat exchanger is used to cool air at 540 k and 400 kpa to 360 k using a 0.05 kgs supply of water at 20
a piece of electronic equipment that is surrounded by packing material is dropped so that it hits the ground with a
a sprinkler essentially consists of a pipe ab mounted on a hollow shaft. the water comes in the pipe at o and goes out
one kilogram of water fills a 150-l rigid container at an initial pressure of 2 mpa. the container is then cooled to 40
refrigerent r-134a at 140 kpa and minus 10 degc is comressed by adiabatic 0.7 kw compressor to an exit state of 700 kpa
assuming that steam can be treated as an ideal gas what would the specific volume of steam be at 600deg f and 120 psia
the turntable of a record player rotates initially at the rate 33 revmin and takes 14.07 s to come to rest. what is the
A paper clip is made of wire 0.7 mm in diameter. If the original material from which the wire is made is a rod 25 mm in diameter, calculate the longitudinal engineering strain and true strain that the wire has undergone during processing.
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