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In a falling-ball viscometer, a steel sphere with a diameter of 1.200 in drops through a heavy syrup and travels 18.0 in. in 20.40 s at a constant speed. Compute the viscosity of the syrup. The syrup has a specific gravity of 1.18. Note that the free-body diagram of the sphere should include its weight acting down and the buoyant force and the drag force acting up. The steel has a specific gravity of7.83. See also Chapter 2.
Consider the conditions of Example 9.3, including the effect of adding insulation of thickness t and thermal conductivity k = 0.035 W/m · K to the duct. We wish to now include the effect of radiation on the outer sur- face temperatures and the tot..
a 20 bbl influx of 9 lbmgal salt water enters a 10000 ft well containing 10 lbmgal mud. the annular capacity is .0775
How do you the bubble point temperature and Vapor mole fractions at the bubble-point for a mixture at 690kPa that is 10.0mol % ethylene, 40.0 mol % ethane, and 50.0 mole % propane. Use the Depriester chart.
an electrical wire having a diameter of 1.5 mm and covered with a plastic insulation thickness 2.5 mm is exposed to
What is Reynold's Number. Explain by stating the formula.
a copper specimen is cold worked at room temperature and annealed at 100-400c. draw schematic sketches showing how
the inner and outer surfaces temperatures of a 0.5-cm thick 2-m x 2-m window glass in winter are 100c and 30c
a reversible power cycle whose thermal efficiency is 40 receives 50 kj by heat transfer from a hot reservoir at 600 k
1. (a) In your own words describe briefly the phenomenon of luminescence. (b) What is the distinction between fluorescence and phosphorescence?
a large food-processing plant requires 1.5 lbms of saturated or slightly superheated steam at 140 psia which is
Heat is transferred steadily through a 0.2-m thick, 8m x 2 m wall at a rate of 2.6 kW. The inner and outer surface temperatures of the wall are 15 °C and 5 °C respectively. Find the average thermal conductivity of the wall.
consider the following pulse width modulation rc circuit. the circuit consists of a switch two resistors and a
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