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During a test flight in which a 9000-kg helicopter starts from rest at t = 0, the acceleration of its center of mass from
What is the magnitude of the total external force on the helicopter (including its weight) at t = 6 s?
Steam flows steadily through an adiabatic turbine. The inlet conditions of the steam are 10MPa, 450C and 83 m/s, and the exit conditions are 10kPa, 92 percent and 42 m/s. The mass flow rate of the steam is 12 kg/s.
Given a lifting (rotating) cylinder in cross flow of radius a with a lift coefficient of C1=5, calculate the peak (suction) pressure coefficient, Cp. Use potential flow relations and assume 2-D.
Water vapor is cooled in a closed, rigid tank from 520°C and 100 bar to a final temperature of 270°C. Determine the final pressure, in bar, and sketch the process onT-y and p-y diagrams.
The microstructure of a copper-silver alloy at 775°C (1425°F) consists of primary and eutectic structures. If the mass fractions of these two micro constituents are 0.75 and 0.25, respectively, determine the composition of the alloy (expressed in wt...
fresh snow absorbs 80 percent of the incident solar radiation with wavelengths shorter than lambda1 0.4 microm 10
a carefully controlled tensile test is conducted on a metal alloy specimen. the original diameter is 10 mm and the gage
An air-cooled condenser is rated at 40 tons will be installed at an elevation of 5000 ft (1640 m) above sea level. The manufacturer advises a correction factor of 0.89 at an altitude of 5000 ft (1640 m). Determine the condenser rating at this elev..
1. (a) In your own words describe briefly the phenomenon of luminescence. (b) What is the distinction between fluores- cence and phosphorescence?
a male reactor operator receives a whole body dose equivalent of 0.96 rem over a period of one week while working with
in an actual refrigeration cycle using r-12 as the working fluid the refrigerant flow rate is 0.05 kgs. vapor enters
Application: λ/4 monopole. A quarter-wavelength monopole antenna is used at 100 MHz. The antenna is placed vertically above a conducting surface.
a cylindrical rod with a diameter of 25mm is subjected to a torque of 500n?m and axial tensile force of 40kn.i draw a
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