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A bicyclist of mass 70kg supplies 300 watts of power while riding into a 3m/s headwind. The frontal area of the bicyclist and bicycle together is 0.362 m2, the drag coefficient is 0.88, the coefficient of rolling resistance is 0.007. Determine the speed V of the bicyclist.
propane gas enters a continuous adiabatic heat exchanger at 40degc and 250 kpa and exits at 240degc superheated steam
Determine the thermal efficiency of the cycle and the net specific work. Assume each turbine stage isentropic efficiency to be 99% and assume the FWH is open.
what two outcomes characterize the response of an opaque surface to incident radiation? which outcome affects the
a two cylinder engine with cranks at right angles developes 75 kw at mean speed 400 revmin.the coefficient of speed
In the paragraphs that follow, answers are provided to a number of key questions about desogestrel-only pills. What is the desogestrel-only pill?
a 0.2 m3 tank containing helium at bar and 22 c will be used to supply 4.5 moles per minute of helium at atmospheric
hot combustion gases enter a gas turbine at .8mpa and 1500 k at a rate of 2.1 kgs and exit at .1 mpa and 800 k. if heat
a tensile force of 8 kn is applied to the ends of a solid bar of 7.35 mm diameter. under load the diameter reduces to
three cstr are to be used in series. the second reactor has a volume twice that of the first and the third reactors.
a computer cpu chip operates at steady state with d-c electrical input of 4.5 amps at 9 volts. to prevent the chip from
a jeep tows a 400kg block uip a 45deg incline. the coefficients of friction between the block and the ground are us0.5
a solid square cross-sectional bar bxb with a yield stress of 250 mpa is subjected to a compressive axial force p 140
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