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(a) Suppose that you have pits of roughly 0.002 mm diameter in a metallic heater surface.
At about what temperature might you expect water to boil on that surface if the pressure is 20 atm.
(b) Measurements have shown that water at atmospheric pressure can be superheated about 200?C above its normal boiling point. Roughly how large an embryonic bubble would be needed to trigger nucleation in water in such a state.
A prismatically shaped gate placed at the end of a freshwater channel is supported by a pin and bracket at A and rests on a frictionless support at B. The pin is located at a distance 4 h = in. below the center of gravity C of the gate. Determine ..
what are the motivations for an organization to have a good supply chain management scm system? define scm in your own
Perform a transient analysis on a Resistor-Capacitor circuit, and measure capacitor charge and discharge times. Determine the steady state values of current, voltage, and the time constants for a Resistor-Capacitor circuit.
The impedance of a capacitor is inversely proportional to the frequency and the capacitor effectively blocks dc voltage.
Determine the minimum cable force T and critical angle ? which will cause the tow truck to start tipping, i.e., for the normal reaction at A to be zero. Assume that the truck is braked and will not slip at B. The truck has a total mass of 4 Mg and..
Media is to be batch sterilized in a 100 liter fermenter before it is used to grow microorganisms. Using 0.001 as the probability of an unsuccessful sterilization, compute the time required for sterilization at 121°, 125°, 130°C, and 135°C
Activator rod AB exerts on crank BCD a force P directed along line AB. Knowing that P must have a 100-N component perpendicular to arm BC of the crank, determine
Plot the displacement diagram. Find the profile for a cam with a base radius of 4 cm (Assume knife edge follower). If the rotational speed of the cam is 240 rpm, what would be the dwell time in seconds and how long will it take the follower to rise ..
good understanding of Mil-Std-499 and Mil-Std-499A
The weight of bodies may change somewhat from one location to another as a result of the variation of the gravitational acceleration g with elevation. Accounting for this variation using the relation in Prob. 1-9,
Two discrete-time systems T1 and T2 are connected in cascade to form a new system T as shown in figure. Prove or disprove the following statements.
1. if 8000m3d of wastewater from an industry has a bod5 of 190 mgl and k 0.17 per day base 10a. how much oxygen kgday
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