Surface Waves: Understanding its movements I. Introduction We treat here an important wave phenomenon‚ the surface wave. It occurs in many physical systems both mechanical and electromagnetic. Mechanical surface waves can exist at the interface between two media with different densities such as the oceans and air. Ordinary sea waves and tsunamis are surface waves. Seismic events can produce both longitudinal and shear waves at the earth’s surface‚ resulting in earthquakes. Electromagnetic surface
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GCE Examinations from 2009 First AS Award: Summer 2009 First A Level Award: Summer 2010 Biology GCE AS and A BIOLOGY 1 Contents WJEC AS GCE in Biology WJEC A Level GCE in Biology 2009 & 2010 First AS Award - Summer 2009 First A level Award - Summer 2010 Page Entry Codes and Availability of Units 2 Summary of Assessment 3 Introduction 5 Aims 9 Assessment Objectives 10 Specification Content 11 Scheme of Assessment 26 Key Skills 31
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potatoes reacting with Hydrogen Peroxide. In particular I will investigate the effects of changing the surface area of a potato when added to Hydrogen Peroxide. This is because‚ when increasing the surface area of the potatoes it will increase the rate of reaction because there will be more surface area on which particles from the potato and the Hydrogen Peroxide will collide on‚ and with more surface area there would be more particles carrying kinetic energy‚ and by carrying more kinetic energy the chance
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OPERATING & FINANCIAL PERFORMANCE OF THE COMPANY PROFITABILITY RATIOS * Gross Profit marging Gross ProfitSales×100% 2010/2011 2009/2010 = (171‚325‚029/435‚759‚776) *100 = (59‚257‚454/327‚593‚843)*100 = 39.3164% = 18.0887% * Profit Margin = NPBT * 100 Sales 2011/2012 2010/2011 = (41‚896‚089/ 435‚759‚776)
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Ratio Analysis Ratio analysis is basically used to understanding the financial health of a business entity. With the help of ratios we can easily calculate from current year performance of the companies and are then compared to previous years. Ratio analysis conducts a quantitative analysis of information in a company’s financial statements. These Ratios are most commonly used in banking sector can be divided into five main categories Liquidity Ratios Leverage Ratios Profitability Ratios Activity
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Surface Water Pollution Freshwater makes up less than three percent of earth’s water‚ but is the source of virtually all drinking water.55 percent of that water comes from reservoirs‚ rivers‚ and lakes‚ These sources‚ called surface water‚ are vulnerable to pollution discharged out of pipes and precipitating out of the air but the primary source of their pollution today is runoff‚ pollutants washing off the land. These nonpoint or scattered sources are not easily traceable. fertilizers used
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Current Ratio Interpretation From the calculation of the current ratio it is evident that the company’s current ratio for the year 2010 is 1.30:1 ‚2011 is 1.80:1‚ 2012 is 1.54:1 and 2013 is a 1‚53:1‚ that is company’s current assets in year 2013 was Rs. 1.53 for every 1Re of current liability‚ while in the year 2012 the current asset was Rs 1.54 Re of its current liability‚ while in the year 2011 the current assets was Rs 1.80 Re of its current liability‚ and while in the year 2010 the
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Current Ratio 2012 (‘000) 2013 (‘000) (Current Asset)/(Current Liabilities) (Current Asset )/( Current Liabilities) = (RM 308‚510)/RM161‚786 = RM337‚728/(RM 222‚768) = 1.91 : 1 = 1.52 : 1 The table above shows that Dutch Lady has a decreased
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Jay Wainwright 12C Forensic Science Friday 6th September 2013 Experiment; Looking at onion cells using a light microscope. Apparatus; - 1x Light Microscope. - 2x Pipettes. - 1x Beaker (100 ml). - 1x Small Onion. - 1x Knife. - 1x Forceps. - 1x Microscope Slide. - 1x Cover Slip/Glass. - Water. - Iodine Solution. - Marble Tile. - Plastic Gloves. - Window/Strong Light Source. Pre-Practical - Setting Up the Experiment; Place the onion onto a marble tile. Using a knife‚ chop the onion into pieces
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particle -> dilute solution of mineral salts • Cell sap in root hair -> lower water potential than surrounding soil solution -> separated by partially permeable membrane • Water enter root hair cell by osmosis/active transport • Mineral salts -> diffusion and active transport [pic] How is the structure of root hair cell adapted to its function of absorption? • Elongated protrusion that increases surface area to volume ratio -> increase efficiency of absorption of water and
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