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A ball is dropped inside an evacuated tube so that there is no aerodynamic drag acting on the ball. At one point it is at a height of 2.5 m and is dropping at a speed of 1.0 m/s. What will be the height of the ball when its speed is 5.0 m/s? Take g= 9.81 m/s2
saturated ammonia vapor leaves an evaporator at 10 f and 0.5 lbms. the velocity must be less than 15 fts. what is the
Refrigerant - 12 as saturated vapor at 0.5 MPa is isentropically compressed by a compressor in a refrigeration plant to 0.9 MPa. Determine the enthalpy change for the process and the final fluid phase.
a 0.75m3 tank contains nitrogen at 150kpa and 40degc. 2.0 kg of oxygen are added to the tank. what is the final
ethane gas is burned in a steady-flow process with 30 excess air both of which enter separately at 25 0 c and 1 atm.
the system is released from rest in the position shown. the masses of the collar a and the box b are ma 90 kg and mb
a gate having a cross section as shown an opening 5 ft wide and 4ft high. the weights 400 lbs and its center of gravity
an ideal gas at 20 bar and 400 celcius is being fed into an adiabatic turbine to generate electricity at a rate of 278
A piston-cylinder contains 0.1 kg of superheated steam at 180 ¯ C and 5.0 bars. The piston is frictionless and freely floating. Heat is added until the final volume is twice the initial volume.
a system that operates in a reversible cycle receives energy by heat transfer from a 24.8oc reservoir at a rate of 25.5
1. a circular hovercraft is to levitate at a gap height of 2.5 mm after picking up a payload. the hovercraft has a
an earthen channel n0.03 has a bed width of 5.0 m a water depth h 1.5 m a 45deg side slope and a channel slope of
the a-36 steel plate has a thickness of 12 mm and other dimensions. r30mm p60mm ab200mm bc800mm cd200 width120mm. the
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