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An experiment involves heating a very small sphere that is suspended by a fine string in air with a laser beam in order to induce the highest sphere temperature possible. After inspecting Equation 9.64, a research assistant suggests inducing a uniform downward airflow to exactly offset free convection from the sphere, thereby minimizing heat losses and maximizing the steady-state sphere temperature. In the limiting case of a very small sphere, what is the minimum value of the convection heat transfer coefficient expressed in terms of the sphere diameter and thermal conductivity of the air?
Draw a diagram of a simple gene finding HMM that might be useful for prokaryotes. The HMM should contain hidden states for exons and intergenic regions, and it should guarantee that exons have lengths that are multiples of three.
What is the compressibility exponent for the cake if the resistance of the filter medium is negligible?
find the impedance of the series combination and determine the voltage across the series combination. Sketch the phasor diagram showing all quantities involved.
Design the manufacture of (tones/day) Ferrous sulphate monohydrate from waste pickle liquor. Pickling is generally associated with the removal of scale with mineral acid. Sulphuric acid is the most commonly used pickling acid.
Is this level of resolution sufficient for finding the entrance to a building? Can dead reckoning and inertial guidance help when GPS signals are lost?
At steady state with a feed concentration of 4 gmol/lit., and mean residence time of 65 sec in the second reactor, the concentration of feed to second from the first is found to be 2 gmol/lit., while that of the stream leaving the second is 1 gmol..
For the segment Y3 to be turned on, develop the logic expression and find one possible logic circuit to realize the output in each case.
Finding the Heat of Reaction (Enthalpy) from Heats of Formation, Calculate the heat of reaction at the standard reference state for the following reactions
The sphere is hung from the ceiling and you pull the other half with the force of your body weight. Will the hemispheres come apart? Support your answer with calculations.
The total volume of hydrogen gas needed to fill the Hindenburg was 2.0 108 L at 1.0 atm and 25C. How much heat was evolved when the Hindenburg exploded, assuming all of the hydrogen reacted?
Does there exist a kinetic differential equation for which all the conditions (4.24) hold except the inequalities and which is still induced by a deficiency zero mechanism (although surely not by a generalised compartmental system)?
If the gases enter the reactor at 348.15 K (75"C), if conversion is 80%, if no side reactions occur, and if the reactor operates adiabatically, what is the temperature of the gases leaving the reactor? Assume ideal gases.
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