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A dish of liquid water is placed on a table in a room. After a while, all of the water evaporates. Taking the water and the air in the room to be closed system, can the system be regarded as a pure substance during the process? After the process is completed?
a preheater involves the use of condensing steam at 100? on the inside of a bank of tubes to heat air that enters at 1
a polyethylene bar having diameter d14 inches is placed inside a steel tube having inner diameter d2 4.01 inches. the
in a piston cylinder device 5kg of air at 200kpa and 227oc is compressed to 500kpa at 100oc. determine the entropy
A stationary gas turbine power plant operates on a simple ideal Brayton cycle with air as the working fluid. The air enters the compressor at 95 kPa and 290 K and the turbine at 760 kPa and 1100 K. Heat is transferred to the air at a rate of 35,00..
.How does data screening differ from data cleaning?
the basketball player likes to release his foul shots with an initial speed v0 23.5ftsec. what values of the initial
a light inelastic string of length 1.5m fixed at one end carries a particle p of mass 4 kg at the other end. if the
carousle conveyors are used for storage and order picking for small parts.the conveyors rotate clockwise or counter
When these stops occur, it takes an average of 10.0 min to diagnose the problem and make repairs. Determine (a) line efficiency and (b) average actual production rate.
water is to be pumped from a dam to a storage tank 20 m above at a rate of 70 ls. the electric power needed to achieve
A block of metal has a 90 notch cut from its lower surface. The notched part rests on a circular cylinder of diameter 2.0 cm, as shown in Fig. 4.15. If the lower surface of the par is 1.3 cm above the base plane, how deep is the notch?
please use ees to solve this problem.one method for storing hydrogen involves cooling it so that it liquefies. figure
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