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A sky diver with a mass of 70 kg jumps from an aircraft. The aerodynamic drag force acting on the sky diver is known to be FD =kV2, where k=.25 N.s2/m2. Determine the maximum speed of free fall for the sky diver and the speed reached after 100 m of fall. Plot the speed of the sky diver as a function of time and as a function of distance fallen.
for a wind speed of 6 ms a stack gas exit velocity of 20 ms a stack diameter of 4 m a heat emission rate of 15 mw and
this comes from the book fundamentals of engineering thermodynamics authors michael j. moran and howard n. shapiro 6th
r-134a is contained in a vertical cylinder fitted with a frictionless piston and a set of stops and the volume is
At a section in a passage, the pressure is 150 kPa (abs), the temperature is 10 deg C, and the speed is 120 m/s. For isentropic flow of air, determine the Mach number at the point where the pressure is 50 kPa (abs). Sketch the passage shape.
consider a house in winter. it is heated by the sun at a rate of 2 kw. electrical appliances in the house are drawing
a certain body is weighed at an elevation of 30000 ft where g32.08 ftsec2 by a spring balance that was calibrated at
air at 30 celcius and 2 mpa flows at steady state in a horizontal pipeline with a velocity of 25ms . it passes through
given atmospheric air enters a 10m long 150-mm diameter uninsulated heating duct at 60 celcius and 0.04 kgs. the duct
the 2 Mg car increases its speed uniformly from rest to 25 m/s in 30s up the inclined road. determine the maximum power that must be supplied by the engine, which operates with an efficiency of 0.8. also, find the average power supplied by the eng..
In the an ideal turbo jet, the engine is designed such that the turbine work is divided equally between the compressor and the propeller. The gas from the turbine discharges to a nozzle for additional thrust.
an engine operates on an air-standard brayton cycle with reheat. the work required to compress the air in one stage
draw a free body diagram for each of the two situations. use the "radial" Newton's law to find the tension in the string at each of these situations.
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