What is the temperature of the air and the duct surface
Air at 3x10-4 kg/s and 27o C enters a rectangular duct that is 1 m long and 4 mm by 16 mm on a side. A uniform heat flux of 600 W/m2 is imposed on the duct surface. What is the temperature of the air and the duct surface at the outlet?
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If a strain of -0.087 is measured by a strain gage, what stress must the Aluminum be experiencing? If the bar is pourus nd you have a strain of 0.04 at a stress of 60,000psi , what is the effective modulus of the material?
The end of a robtoic arm extends along the path of the limacon r = (1+.5 cos [theta])m. at the instant that [theta] = pi/4, the arm has angular rotation [theta]' = .6 rad/s, which is increasing at [theta]'' = .25 rad/s^2.
If a coal-burning electrical generating plant burns 2 tons of coal to generate 6000 kWh of electricity, calculate the efficiency of the plant as the ratio of electricity output to fuel energy input.
The mass and volume of an American penny made after 1982 are 2.5 g and 0.36 cm3. How many pennies can be placed in the racquetball boat without sinking it? (The density of water is 1000 kg/m3.)
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Determine the cycle efficiency of steam power plant working under the following data: Boiler pressure: 80 bar; condenser pressure: 0.1 bar, turbine inlet temperature: 5000C.
What is the percent of explained variation determined by the regression line? How do you determine the percentage?
At a given instant train E has a speed of 20m/s and an acceleration of 14m/s^2 acting in the direction shown (75 degrees to the left of the track).
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