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You are designing a remote-area power supply based on a miniature wind turbine that is 20% efficient. Meteorological data indicates an average wind speed of 24 km/h at an air temperature of 10oC and pressure of 0.9 atm. The rotor has a diameter of 1.25 m. What is the electrical power available?
Determine the mass flow rate of the air passing through this engine and the rates of heat addition and rejection when this engine produces 1000 hp. Assume constant specific heats at room temperature.
A satellite is in Earth orbit with an altitude at perigee of 555.0 km and an altitude at apogee of 1200.0 km. a. What is the semi-major axis of the orbit? b. What is the eccentricity? c. If the true anomaly is 160 degrees, what is the satellite's ..
A launch approaches a wharf at a speed of 10.5 knots(=5.4m/s).The engine are put in the reverse when the launch is 10 m from the wharf, the retardation being 1.25m/s squared. will the launch come to rest before hitting the wharf.. If not, with wha..
Estimate the blood pressure in each branch, assuming that blood vessels behave as rigid tubes, that we have frictionless flow, and that the vessel lies in the horizontal plane. What is the force generated at the branch by the blood? You may approx..
If water leaves the basement at 88C, determine the rate of heat loss from the weather.
A satellite is in Earth with an altitude at perigee of 550 km and an altitude at apogee of 5000 km.
a triangular field with vertices opq has sides op=402m,pq=388m,and qo=254m. find the perpendicular distance from the vertex p to the opposite side.
determine the actual and minimum theoretical operating costs, each in $/day.
Also, compare with the efficiency of an Otto cycle operating with the same maximum pressure.
What is the composition, in atom percent, of an alloy that consists of 5.5 wt% Pb and 94.5 wt% Sn?
Determine the minimum no of teeth required on pinion in order to avoid interference which is to gear with 1 a wheel to give a gear ratio of 3 to 1
Consider 6.0 kg of austenite containing 0.45 wt% C, cooled to below 727 degrees Celcius (1341 degrees Farenheit).
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