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The 10-Mg helicopter carries a bucket containing 500 kg of water, which is used to fight fires. If it hovers over the land in a fixed position and then releases 50 kg> s of water at 10 m> s, measured relative to the helicopter, determine the initial upward acceleration the helicopter experiences as the water is being released.
Three lb of water is contained in a piston–cylinder assembly, initially occupying a volume V1 5 30 ft3 at T1 5 300°F. The water undergoes two processes in series: Constant-temperature compression to V2 5 11.19 ft3, during which there is an energy tra..
a spherical copper shell of inside radius 5cm and wall thickness 1cm loses heat to the surrounding air which is
an electrical conductor is composed of a steel core 116 inch in diameter surrounded by a 364 inch thick shell of
automotive exhaust systems often use two catalytic converters. the exhaust temperature is a key factor which determines
a piston-cylinder device contains steam initially at 1 mpa 450degc and 2.5 m3. steam is allowed to cool at constant
a closed nonreactive system contains species 1 and 2 in vaporliquid equilibrium. species 2 is a very light gas
from time t0 to t5 hr radioactive steam is released from a nuclear power plant located at x -1 mile and y 3 miles.
Calculate the enthalpy and entropy of saturated steam vapor at 594 K using compresibility table. Assume an ideal reference state of 25 C and 3.166 kPa.
Estimate the slope dp/dt of the ice +water line using the triple point information. Specific entropy of ice at the triple point is -1221J/kgK , specific entropy of liquid water at triple point is 0.0 J/kgK. Determine therefore the temperature in Cels..
A luge and its rider, with a total mass of 98 kg, emerge from a downhill track onto a horizontal straight track with an initial speed of 39 m/s.
draw the free-body diagram and write the corresponding elemental equation for a spring element with the following
a diesel engine has a compression ratio of 20 and a cutoff ratio of 2. air is at 95 kpa and 290 k at the beginning of
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