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Question: Repeat Problem, assuming the circuit board to be positioned horizontally with (a) chips facing up and (b) chips facing down.
Problem: A 50-cm × 50-cm circuit board that contains 121 square chips on one side is to be cooled by combined natural convection and radiation by mounting it on a vertical surface in a room at 25°C. Each chip dissipates 0.18 W of power, and the emissivity of the chip surfaces is 0.7. Assuming the heat transfer from the back side of the circuit board to be negligible, and the temperature of the surrounding surfaces to be the same as the air temperature of the room, determine the surface temperature of the chips. Evaluate air properties at a film temperature of 30° C and 1 atm pressure. Is this a good assumption?
explain key differences between viruses and other malicious codes. Identify three different types of viruses, and describe main differences between each one.
Two game tiles, numbered 1 through 9, are selected at random from a box without replacement. If their sum is even, what is the probability that both numbers are odd?
On the basis of your readings, refine your topics, thinking about what we know, what we do not know, and other possible ways the topic could be studied.
Write down technical paper on "Our goal is to aid programmers create program of high quality - programs that reliable, efficient, and reasonably.
In this lab, you will prepare a Data Dictionary based on the list of elements. Also, your task will be determined the tables, their relationships, primary and foreign keys. Based on this analysis, you will create Database Schema, relational tables..
Describe what you feel is a content delivery system. find at least two examples of content delivery system on the internet and provide URL to these examples in your response to this question.
Connect the outputs of three 3-state buffers together, and add additional logic to implement the function.
Explain why replacing the extracellular with choline has little effect on the resting potential of an axon. Calculate the new resting potential with 90% of the extracellular removed. Why is the same not true if is replaced? (Assume the conductance..
Image that you are a member of a development team that is creating a large and important web-based application. This application is critical to the company and must be available 24 hours per day.
In reaching a conclusion, you might like to consider the effect of substituting the values of class variables into the bodies of the methods that use them.
In a chemical process plant, liquid isobutane at 50°F is being transported through a 30-ft-long standard 3/4-in Schedule 40 cast iron pipe.
Following on from the previous assignment, the CIO was comfortable with what has been proposed by you in the first assignment and would like to see three key elements be investigated and reported further in this assignment.
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