The heights of 16-18 year old young adults varies between males and females. My prediction is that the majority of males are taller than females.
Statistics coursework S1 Task A: Measurements The heights of 16-18 young adults varies between males and females. My prediction is that the majority of males are taller than females. I have decided to take a sample of 100 16-18 young adults from Havering Sixth Form College and measure their heights with a tape measure. My two populations will be male and females and I will obtain 50 male heights and 50 female heights. I have chosen to take a sample of 100 because small sample sizes may give inaccurate results whereas a larger sample size may be impractical and time consuming. Therefore I feel a sample size of 100 will give a efficient set of results and a meaningful conclusion could be deduced. To insure that the data I collected wasn't biased I didn't look at each persons height to ensure that the data I collected was even for both populations and within both populations. Also because height isn't affected by whether you are athletic or not or whether you eat lots or who you are friends with, the data I collected cant be bias for that aspect of my data collection and also I didn't collect my data at a modeling studio, of which nearly everyone there would be over 6ft and would make my data collection bias and unfair. So overall the data I collected wasn't bias and was accurate to use for my investigation. I decided to investigate the difference in heights between
paper cones investigation
Investigation Report Aim Theory When an object is dropped in air, it accelerates. If it is allowed to drop far enough then it can reach its terminal velocity. This is the maximum velocity of the object during its fall and occurs when the upward force of air resistance acting on the object equals the weight of the object. So at terminal velocity... (P.31, Complete Physics, 1999, Pople, Oxford University Press, ISBN 0-19-914734-5) (P.33, Physics 1, 2000, Cambridge University Press, ISBN 0-521-78718-1) Looking for a formula for air resistance... F = force of air resistance ? = density of air = 1.2kgm-3 c = coefficient of drag for the object / dimensionless A = cross-sectional area of object hitting the air / m2 v = velocity of the object / ms-1 (http://damonrinard.com/aero/formulas.htm) Looking for a formula for the weight of an object... W = m.g W = weight / N m = mass / kg g = acceleration due to gravity, 9.81Nkg-1 (P.55, Physics, 1991, Robert Hutchings, Nelson, ISBN 0-17-438510-2) So putting these formulae together... From the Physics AS course, v = velocity x = displacement t = time so References to the specification Forces and Motion 2821 Forces, Fields and Energy 2824 Aim of your investigation The aim of this work is to investigate the relationship between the time taken for a paper cone to fall and the mass of the cone. Variables
What are the Main Difficulties for a twenty-first Century reader in fully appreciating Dr Jekyll and Mr Hyde(TM)
What are the Main Difficulties for a twenty-first Century reader in fully appreciating 'Dr Jekyll and Mr Hyde' The most prominent factor that affects how a twenty-first century reader can fully appreciate the novella, is simply the 'old-fashioned' grammar and vocabulary. This novella displays expressions that have either died out or changed meaning over the years. There are concepts within the novella that may have been controversial and new at the time it was written but have now have been discovered as a result of scientific advancement. The description in the novella is limited in such a way that the reader has to know a lot about London before the introduction of modern transport and roads. "...the low growl of London..." (p21), which most likely refers to the sounds of a horse and cart going along the cobbled roads. Although nowadays the 'low growl' could be related to the noise of cars, it is not a thought-provoking image as the reader has to relate the sound to something in the reader's experience and cars are an unrealistic idea to imagine in this novella. A twenty-first century reader could have difficulties in understanding the surroundings, as the writer assumes that the knowledge of the conditions is already there and he just needs to build on that. A likely difficulty for a twenty-first century reader is that this novella frequently switches between
Artificial Cardiac Pacemakers
Research questions : Why is the constant beating of the heart important? What causes the heart to beat abnormally? What are the implications of having an abnormal heart beat? What is an artificial pacemaker and how does it regulate an abnormal heart beat? How are artificial pacemakers implanted? What are the advantages and disadvantages of using an artificial pacemaker? What are some alternatives used instead of artificial pacemakers? The importance of the heart The heart is an essential organ possessed by every living human. It is vital as it pumps blood rich in oxygen (received from the lungs) to every living cell within the body and pumps deoxygenated blood to the lungs (from the body)1. In the opposite diagram of a human heart, the blue sections represent the transport of deoxygenated blood and the red sections represent the transport of oxygenated blood. The heart is necessary in sustaining the lives of every single human being. This is because without oxygen, cells cannot carry out the process of cellular respiration (the release of energy from glucose). This means that the body cells will have insufficient energy to carry out regular functions needed for sustaining life. Every single cell in the human body is affected by the beating of the heart, as enough oxygen has to be supplied for them to function properly. Without the constant beating of the heart,
T-total coursework
Part 1 Investigate the relationship between the T-total and the T-number 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 2 3 0 1 2 9 20 21 The T-number is always the number at the bottom of the T, so in this case (the yellow T) it is 20. The sum of all the numbers in the T is the T-total. In this case, the T-number, (which will now be called n) is 20, and the T-total, (which will now be called T) is 37. If the number at the bottom of the T is n, these are the other numbers in terms of n, bearing in mind that the width of the grid is 9 (by 9): n-19 n-18 n-17 0 n-9 2 9 n 21 The number above the T-number is (n-9) because this number is exactly one row above (n). The width of the grid is 9, so by moving up 1 cell from (n), I am decreasing the value by the width of the grid (9). The cell above (n-9) is (n-18) as the value has been decreased by the width of the grid again. The cell to the left of (n-18) is (n-19) as it has been decreased by 1. The cell to the right of (n-18) is (n-17) as it is 1 more than (n-18). When these 5 terms are added together I get: (n) + (n-9) + (n-17) + (n-18) + (n-19) = 5n - 63
An Investigation into the effect of caffeine on reaction times
An investigation into the effect of caffeine on reaction times and short term memory Aim To investigate the effect of varying doses of caffeine on performance in simple reaction time and short term memory tests. Research and Rationale Having carried out the core practical on the effect of caffeine on the heart rate of Daphnia, I wanted to investigate the effect of caffeine on other functions of the body, and how this effect comes about. Caffeine is a natural pesticide, found in the leaves, beans and fruit of over 60 plants1, however in humans it acts as a central nervous system stimulant, reducing fatigue and restoring alertness2. It is said to be the most widely used drug in the world, with an average intake of 241mg per person, per day according to a Bristol survey3. I therefore decided to explore how it could affect reaction times and the extent of short term memory, as these are two factors involved in alertness. It has a similar structure to adenosine, meaning it binds to adenosine receptors in the brain. Caffeine and adenosine - http://en.wikipedia.org/wiki/Image:Caffeine_and_adenosine.svg - 22.10.08 When a nerve impulse travels through the synaptic knob, opening the Ca2+ channels, it triggers the release of adenosine, which is synthesised and stored inside the synaptic knob. Normally, the adenosine acts as a neurotransmitter when it is released into the
To Kill a Mocking Bird Essay. In the book, To kill a Mockingbird, Harper Lee highlights the meaning of the narrative using novel standpoint, structure and irony. Harper Lee investigates the absurd attitudes of adults towards race and status
EN3UO Mr. Miller June 16, 2009 To Kill a Mockingbird An innocent child is unaware of the realities of the world until they witness through experiences and teachings, ethics and morals. A book, in the same way, consists of characters, whose experiences, feelings and thoughts convey a subtle theme or message that is usually ethically accurate. The theme represents the controlling idea of the book and the central purpose for which the author decided to write the novel. The theme of the book is usually what the author wants the reader to take away from the book. As a crucial element of a novel, the way in which the author generates the meaning of the book is significant. The author can express the theme effectively not only through the characters present in the novel but also through specific writing styles, the focus being form and text. In the book, "To kill a Mockingbird", Harper Lee highlights the meaning of the narrative using novel standpoint, structure and irony. Harper Lee investigates the absurd attitudes of adults towards race and status in the Deep South in the 1930s through the eyes of Scout Finch. The novel illustrates the conscience of a town that is suffused in prejudice, violence and hypocrisy, which is understood through a black man's struggle for justice. Harper Lee mainly emphasizes the irrationality of prejudice thoughts of a town, along with other themes
Investigating how language has changed in children's literature; in relation to interaction between children and characters of authority in a boarding school setting.
Contents Contents Page Number Introduction 3 Hypothesis 3 Methodology 3 Initial description of 'The Doctor' 4 Initial description of 'Miss Loy' 4 Initial description of 'Miss Potts' 4 Initial description of 'Albus Dumbledore' 4 Discourse 5 Grammar 5 Semantics 7 Phonology 8 Graphology 9 Speech extract from Tom Brown's School Days 0 Speech extract from School Girl Chums 1 Speech extract from Malory Towers 1 Speech extract from Harry Potter and the Philosophers Stone 2 Comparison between extracts involving exchanges between lead characters, and characters of authority 2 Conclusion 5 References 6 List of Tables Table Number Name of Table Page Number Books chosen for comparison 3 2 Acknowledged frameworks 3 List of Figures Figure Number Name of Figure Page Number Comparison of sentence type in initial description of character 5 2 Number of adjectives in the initial description of character 7 3 Word count demonstrating conversation dominance 3 4 Number of adjectives in the speech exchange 4 Introduction Stories of children at boarding schools have always been a popular genre choice amongst both young and young adult readers. They emulate scenarios that children can identify with, more specifically the relationships between the students and their teachers/head teachers. As a result the language used
The Synthesis Of Phenacetin From p-Acetamidophenol
CH1751B - EXPERIMENT 15 The Synthesis Of Phenacetin From p-Acetamidophenol Introduction: "Phenacetin is an analgetic and an antipyretic reagent which acts in the body by temporaririly inhibiting prostaglandin synthesis in the central nervous system". Aim: * To synthesise Phenacetin from p-Acetamidophenol and purify it by recrystallisation. * Analyse purity of Phenacetin produced, by comparing the melting point with the literature values, the appearance and the Infrared Spectrum. Method: Sodium metal (0.6g, cut into small pieces) was cautiously placed into a dry 100cm3 round flask by taking the flask to the "sodium" balance and placing the sodium directly into the flask. A dry reflux condenser was attached and industrial methylated spirits (IMS, 15cm3) was added. A vigorous reaction occurred for 5-10 minutes under reflux until most of the sodium had dissolved. Once the solution had cooled 3.8g of p-acetamidophenol was added. Through the top of the condenser ethyl iodide (3.0cm3) was introduced to the pale green mixture and the mixture boiled at reflux temperature (20-25°). Ethyl iodide was obtained from a burette in the fume hood few minutes before its use, due to its flammable nature and harmful vapour. A darkening green colouration occurred while p-acetanilide dissolved changing through to brown and then yellow. Once the reflux was completed 40cm3 of water was
Fitzgerald uses Chapter 6 to show how the love story of Gatsby and Daisy begins to crumble.
Fitzgerald slowly reveals Gatsby's history to build up the mystery to who he really is. Fitzgerald has Nick use a semantic field of fabrication as he tells of Gatsby's 'imagination' and 'Platonic conception of himself' as a teenager to highlight the facade that revolves around Gatsby. The references to 'conception' and 'inventions' emphasise Nick's, and possibly Fitzgerald's view that Gatsby himself and the world around him are constructions and is epitomised by his materialistic ways to please Daisy. Fitzgerald ensures this history is not directly from Gatsby's voice, giving possibility that Nick has constructed the description to allow the mysteriousness of Gatsby to build. Fitzgerald also has Nick claim he breaks the chronology 'to clear this set of misconceptions away' as he tells the story of 'James Gatz', yet it seems ironically placed in Chapter 6 due to Gatsby's naive claim later that he can 'repeat the past'. Gatsby's history is placed in Chapter 6 to allow the reader to piece together Gatsby's past, giving insight to why he feels it necessary to 'fix everything just the way it was'. By Fitzgerald revealing more details of Gatsby's history the reader can realise how shallow he is, heightening the genre of the novel as an American Tragedy as it begins to become clear that Gatsby's facade is due to the American Dream. Fitzgerald uses Chapter 6 to show how the love
