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Question: A room is to be heated by a coal-burning stove, which is a cylindrical cavity with an outer diameter of 32 cm and a height of 70 cm. The rate of heat loss from the room is estimated to be 1.5 kW when the air temperature in the room is maintained constant at 24°C. The emissivity of the stove surface is 0.85, and the average temperature of the surrounding wall surfaces is 14°C. Determine the surface temperature of the stove. Neglect the heat transfer from the bottom surface and take the heat transfer coefficient at the top surface to be the same as that on the side surface. The heating value of the coal is 30,000 kJ/kg, and the combustion efficiency is 65 percent. Determine the amount of coal burned a day if the stove operates 14 h a day. Evaluate air properties at a film temperature of 77°C and 1 atm pressure. Is this a good assumption?
The bitwise-manipulation operators perform simultaneous bit manipulations and enable programs to process large quantities of binary information well.
The Manager of the Supermarket would like to be able to compute the unit price of items sold there. To do this the program must input the name and the price of item and its weight in pounds and ounces.
define the concept of a primary key in a relational table. Could the primary key be a combination of multiple columns, or is it only in one column.
Explain the installation steps and the key decisions you would take during installation of any STATSPACK utility to collect data useful for measuring performance of database system.
What is a database management system? Discuss each of the five important software components of a database management system.
There are memory-port controllers that allow interfacing multiple memories to computer systems. What is the difference between a memory-port controller.
read the questions below and formulate a brief answer. your response to each question should be at least 2-5 sentences
Write a program that inputs the 20 incomes into an array and then sorts the array into decreasing order - Prepare a program to sorts the array into decreasing order.
Write the definition of a method named copy receives a reference to a Scannerobject associated with a stream of input. The method reads all the Strings remaining to be read from the stream and displays them, one on a line with no other spacing, on..
a sub-graph G'(V',E') of G such that for any two nodes u,v in V', there is an edge e=(u,v) in E'. In addition, G' should be the maximum in terms of size. That is, for any other G'' with the above property, we have |G''| no larger than |G'|.
write a 2- to 3-page paper describing your companys intranet.include how the information is laid out and what security
business intelligence knowledge management and expert systems are powerful tools that allow corporations to analyze
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