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Water is to be boiled at sea level in a 30-cm-diameter mechanically polished AISI 304 stainless steel pan placed on top of a 3-kW electric burner. If 60 percent of the heat generated by the burner is transferred to the water during boiling, determine the temperature of the inner surface of the bottom of the pan. Also, determine the temperature difference between the inner and outer surfaces of the bottom of the pan if it is 6 mmthick.
Compare the time constants RF CF with the period of the waveform for parts (a) and (b). What can you say about the time constant and the ability of the circuit to integrate?
Determine the distance to the centroid C of the composite area shown in the figure.
2 forces are acting -20 and 20 ft away from the origin. each force is 1000 lbf and they are acting 60 degrees from the
a r-12 plant is to develop 5 tons of refrigeration. the condenser and evaporator temperature are to be 40c and -10 c
q1. 1.5 kg of oxygen n2 and 0.15 kg of helium he2 are separated by a partition in a vessel.nbsp the nitrogen is at 5
a nozzle is a device that is used to increase the velocity of a flowing fluid. it does this by reducing the pressure.
a household refrigerator with a cop of 1.2 removes heat from the refrigerated space at a rate of 60 kjmin. determine a
What is the average heat flux based on inside area of the tubes? What is the average temperature gradient in the water on the inside surface of a tube
a force acts at the origin of a coordinate system in a direction defined by the angles qx 65.0deg and qz 69.7deg.
Steam from a superheater at 7 bar. 300 t is mixed in steady adiabatic flow with wet steam at 7 bar, dryness fraction 0.9. Calculate the mass of wet steam required per kilogram of superheated steam to produce steam at 7 bar, dry saturated.
two suppliers manufacture a plastic gear used in a laser printer. the impact strength of these gears is measured in
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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