Aim The aim of this experiment is to calculate the average human reaction time for a simple task. Hypothesis If the activity is repeated a number of times‚ then the reaction time will decrease‚ therefore the slower the reaction time‚ the further the ruler will fall. Variables - which variables are you going to: Change? (Independent Variable) The Independent Variable in this Investigation is the reaction time. Measure? (Dependent variable) The Dependent Variable in this Investigation is how
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EDUCATION in its broadest‚ general sense is the means through which the aims and habits of a group of people lives on from one generation to the next. Education as a science cannot be separated from the educational traditions that existed before. Adults trained the young of their society in the knowledge and skills they would need to master and eventually pass on. In pre-literate societies this was achieved orally and through imitation and story-telling etc .Oral language developed into written
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(kon-JEN-ih-tal) heart defects are problems with the heart’s structure that are present at birth. These defects can involve: The interior walls of the heart The valves inside the heart The arteries and veins that carry blood to the heart or the body Congenital heart defects change the normal flow of blood through the heart. There are many types of congenital heart defects. They range from simple defects with no symptoms to complex defects with severe‚ life-threatening symptoms. Congenital heart defects are the
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the rate of reaction without itself being used up in the process. Enzymes provide an alternate reaction pathway by lowering the activation energy needed for a reaction to occur. For two molecules to react they must collide with each other‚ however‚ they have to collide with sufficient energy. Sufficient energy means that between them they have enough energy to overcome the energy barrier to reaction. This is called the activation energy. Even though enzymes can alter the rate of reaction‚ they lack
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BMR (basal metabolic rate) Basal metabolic rate (BMR)‚ and the closely related resting metabolic rate (RMR)‚ is the amount of energy expended while at rest in a neutrally temperate environment‚ in the post-absorptive state (meaning that the digestive system is inactive‚ which requires about twelve hours of fasting in humans). The release of energy in this state is sufficient only for the functioning of the vital organs‚ the heart‚ lungs and kidneys and the rest of the nervous system‚ intestine‚
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‘Kinetics’ is the study of chemical reactions. The speed of a reaction can vary depending on many variables such as the nature of the reactants‚ particle size‚ concentration and temperature. For a chemical reaction to occur‚ there must be a collision between reactants. The reaction rate is slower when the reactants are large and complex molecules because it takes longer for the molecules to combine together creating a chemical reaction. More than 2000 years ago‚ Democritus‚ who was a philosopher
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Reaction on Reaction Paper The first thing that came to my mind when I have heard about Reaction paper is “What exactly is it?” and before I get an understanding of that‚ I resisted that change. But later‚ when I have studied about it and understood its purpose‚ I have started thinking “Why people avoid change at the first look without an analysis?” The general human tendency is to live in a comfortable zone in which he has lived for quite some time. He draws a circle‚ thinks that circle is his
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How Enzyme Concentration can Affect Rate of Reaction The purpose of this investigation was to see how the concentration of an enzyme affected the rate at which a substance was broken down. We did this by using a white protein called casein. Casein is found in milk powder‚ it is a protein and used mainly as a binding agent in foods‚ because it is mad to proteins and joins to a phosphoric acid it belong to a group called the phophoproteins. In terms of in milk it is said to be healthier if it is
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ARTICLE www.hbr.org Why Satisfied Customers Defect by Thomas O. Jones and W. Earl Sasser‚ Jr. Included with this full-text Harvard Business Review article: 1 Article Summary The Idea in Brief— the core idea The Idea in Practice— putting the idea to work 2 Why Satisfied Customers Defect 14 Further Reading A list of related materials‚ with annotations to guide further exploration of the article’s ideas and applications Product 6838 Why Satisfied Customers Defect The Idea in Brief The Idea in Practice
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Some Factors that Affect the Rate of a Reaction BACKGROUND: Chemical reactions occur at different rates. In this experiment I will consider some of the key factors that influence the rate of a reaction: * nature of reactants - particle size * temperature * catalysts According to the collision theory‚ the rate of a reaction depends on the frequency of collisions between reacting particles. The more frequent the collisions‚ the faster the rate of the reaction. However‚ in order
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