its own databases which contain all the necessary information required for the work. It is obvious that if something is wrong with the computer‚ the job is failed. It does not worth mentioning‚ that the modern age of information has made people dependent of their computers greatly and it influences the human life controversially. On the one hand‚ people gain the opportunity to fulfill more work and spend less time on it; on the other
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How many electrons does Mg2+ have? (1 mark) Mg2+ has 10 electrons. A magnesium atom has 12 electrons with 2 of the 12 being valence electrons. Therefore the atom will lose the valence electrons which are located on the outermost shell to stabilize itself (outermost shell) as atoms tend to do what it easiest. Since magnesium lost 2 electrons it becomes positive as it is giving away electrons to stabilize other atoms. Hence magnesium then becomes Mg2+ because it lost 2 of the 12 electrons. Given
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Transport Processes (SKKK 2313) ASSIGNMENT # 1 1. Consider a steam pipe of length L=20 m‚ inner radius r1=6 cm‚ outside radius r2=8 cm‚ and thermal conductivity k=20 W/m.k. The inner and outer surfaces of the pipe are maintained at average temperatures of T1=150oC and T2=60oC‚ respectively. Obtain a general relation for the temperature distribution inside the pipe under steady conditions‚ and determine the rate of heat loss from the steam through the pipe. Assume that heat transfer is one-dimensional
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the atom and of covalent and ionic bonding that students have used so far emphasizes the attractions between bonding atoms. The nucleus‚ electrons‚ and double-headed arrows show that the protons and electrons from one atom attract the oppositely charged electrons and protons of the other atom‚ resulting in bonding. The energy levels show that only valence electrons are involved in bonding. After students understand the important role of attraction of opposite charges‚ you may introduce them to a common
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Transportation Planning -- Introduction The formation of a nation’s transportation system‚ historically‚ has been evolutionary‚ not the result of a grand plan. 10/25/2011 developing in small increments that accumulate to bring about significant change a method of doing something that is worked out in advance 1 Transportation Planning -- Introduction The system now in place is the product of many individual decisions to build or improve its various parts‚ such
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Is Our Society too Dependent on Computers? Computers have found their way into just about every aspect of our lives‚ and in most cases‚ they make things easier for us. They allow people to work from home‚ socialize with friends and family‚ and they provide an ever-welcome stress relief from school or work. Since their invention‚ people far and wide have become increasingly dependent on computers. Children today are growing up in a world where computers are needed to do everything from controlling
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cell transport mechanisms. These types of transports are passive and active transport. The difference between active and passive is that passive does not require energy and active does require energy. The reason passive does not require energy is because it travels down a concentration gradient. On a concentration gradient molecules naturally move from high to low concentration. In active transport‚ molecules move from low to high concentration. There are three different types of transports for passive
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reasons‚ opinions‚ and motivations. It provides insights into the problem or helps to develop ideas or hypotheses for potential quantitative research. Quantitative research is explaining particular data by collecting numerical data that are analysed using mathematically based methods. Quantitative is much more specific than Qualitative but often is not necessary and takes up more time. Here are examples of them both when looking at surveys: Qualitative: Focus
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trips travelled through the use of transport in the decade 1995 to 2005. This has been the case as vehicles such as cars have become more affordable and convenient to use in terms of their mobility. * In total around 159.08 billion Euros were spent by UK households on transport in 2005 * 51% of total expenditure in 2005 was on transport. There has been a prediction that by 2025 that there will be an extra 4 million trips made every day by a form of transport. * 15% of final household expenditure
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Public transport is a fantastic idea. It’s cheap‚ it’s accessible‚ it’s safe‚ it’s quick and it’s better for the environment. If this is the case‚ then why is it that it’s still vastly underutilised by the general public? Well‚ the description above is wrong. All of these positive statements have actually turned public transport into a nightmare. Whilst on public transport‚ all I feel is misery and anguish at the prospect of the journey continuing and wondering why I left my car at home. The worst
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