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Electronic components mouted on a flat plate are cooled by convection to the surroundings and by liquied water circulating through a U-tube bonded to the plate. At steady state, water enters the tube at 20 degree C and a velocity of 0.4m/s and exits at 24 degree C with a negligible change in pressure. The electrical components receive 0.5kW of electrical power. The rate of energy transfer by convection from the plate-mounted electronics is estimated to be 0.08 kW. Kinetic and potential engerfy effects can be ignored. Determine the tube diameter, in cm.
Evaluate the reduction in pump BHP required by heating the oil from 50° F to 100° F. Suppose efficiency of 80% (HP)
Simics Central Simics can simulate real workloads at reasonable speeds Is the reported performance a result of optimization or simulator simplicity? What are some of the potential drawbacks of making a completely general simulation environment?
how many grams of Na3PO4 will be needed to produce 250 mL of a solution of a solution that has a concentration of Na+ ions of 1.5 M.
in a tempering process glass plate which is initially at a uniform temperature ti is cooled by suddenly reducing the
Determine the distance d between the cars at which the driver of car A must apply his brakes to just avoid colliding with carB.
a common aluminum alloy al-2024 contains 4.4 wt. copper 1.5 wt. magnesium and 0.6 wt. manganese. the balance is
the vertical motion of mass a is defined by the relation x10sin2t15cos2t100. determine a the position velocity and
a rectactangular surface is placed in a vertical position in fresh water with its top and bottom edges horizontal. if
Water is being pumped from a large lake to a reservoir 30 m above at a rate of 5x10-3 m3/s by a 12 kW (shaft) pump. If the irreversible head loss of the piping system is 8m, determine the mechanical efficiency of the pump.
Entropy explained in this solution, Liquid H2O at 8 MPa and 40 degrees C is heated reversibly at constant pressure until the temperature reaches 600 degrees C
A vessel with a volume of 0.0011 m3 is filled with dry saturated steam at a pressure of 95 kPa. It is then sealed and cooled to 250C. Determine the amount of heat that must be removed.
determine the smallest allowable value of the coefficient of static friction between the collar and the rod if the collar is not to slide when a) a =15° b)a = 45°. Indicate for each case the direction of the impending motion.
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