The purpose of this experiment was to determine the effects of temperature on the elasticity of rubber bands. There were three hypotheses: If the 0.157 cm rubber bands are heated to about 100˚C in water for one minute‚ then the rubber bands will stretch to approximately 60 cm; If the 0.157 cm rubber bands are cooled to 0˚C in water for one minute‚ then the rubber bands will stretch to approximately 40 cm; If the 0.157 cm rubber bands are left in room temperature water for one minute
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PAPER SUMMARY & REVIEW. Reference: Boateng R‚ (2011)‚"Mobile phones and micro-trading activities - conceptualizing the link"‚ info. Vol. 13 Iss: 5 pp. 48 – 62 kiResearch Issue An investigation into the impact of Mobile Phones on the micro-trading activities in Ghana. Research Problem/Research Questions 1)What is the effect of mobile phones on the micro trading activities of traders in Ghana? Research Frameworks Used 1. Target Group(Traders) 2. Mobile phones 3. Stages of trading (Pre-trade
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Candide Voltaire‚ a French philosophe and writer‚ wrote this document during the Enlightenment. He illustrates his opinion on many Enlightenment ideas‚ such as Leibnizian optimism‚ deism‚ and religious tolerance. He impacted many people‚ including Benjamin Franklin and Thomas Jefferson with his belief of religious toleration and civil rights. His view on organized religion also influenced the French Revolution. One of the Enlightenment views Voltaire addresses is Leibnizian optimism‚ or the
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“San Fernando Meat Shop and Mini Grocery’s Database System” Researchers: Melanie Claire Wagas (BSIT) Divina Arcilla (BSIT) Eugene Duetes (ACT) Arbejay Bandalan (ACT) MWF (8:30-9:30) Ms. Miriam Flores March 10‚ 2012 A database management system (DBMS) is a software package with computer programs that control the creation‚ maintenance‚ and use of a database. It allows organizations to conveniently develop databases for various applications by database administrators (DBAs) and other
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Kierra Roberts 1-4-11 11B How Do Batteries Work? Electricity is the flow of electrons through a wire‚ that is called a circuit. Batteries have three parts to them‚ an anode‚ a cathode‚ and an electrolyte. The cathode and the anode are hooked up to an electrical circuit. The chemical reaction that is happening causes the electrons to build up at the anode. When the circuit is closed the electrons will be able to get to the cathode. When the electrochemical process change the
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Potato Catalysis Lab Pre-Lab Assignment Background Information: An enzyme is catalytic protein. It is the most important type of molecule found in living cells. Cells would not be able to function without enzymes. Enzymes speed up or slow down chemical reactions of the cells. It is usually easy to identify the names of enzymes because they end in -ase. The enzyme that acts upon the substrate hydrogen peroxide is usually called catalase. This enzyme is found in both plants and animals
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In the early 1800s life in Ireland wasn’t easy‚ Irish citizens got by day to day by farming and relying on the potato. The potato was their main source of food and money. With out the potato the Irish would have nothing. No one was prepared for what was about to happen in 1845‚ the beginning of the Great Irish Potato Famine. The Irish Potato Famine was the worst tragedy in the history of Ireland. The outcome of the famine would result in hundreds of thousands dead‚ an failure of the economy
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Aim To observe and measure the effect of osmosis on the mass of potato using a starch solution. Introduction In order to measure the effect of osmosis‚ eighteen pieces of potato were cut and placed in six groups‚ each group of three pieces cut to weigh as close as possible to one another. For each potato group‚ a test tube was half filled with a starch solution varying in concentration from 0% (water) to 1%. Hypothesis Through osmosis
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Osmosis of a Potato cell. Hypothesis is that the potato in saltwater is going to show that it will break down the cells of the potato. Osmosis is the diffusion of a solvent through a semi-permeable membrane‚ from a solution of low solute concentration to a solution with high solute concentration‚ up a solute concentration gradient. Net movement of solvent is from the less-concentrated to the more-concentreated.‚ which tends to redure the difference in concentrations. This effect can be countered
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Osmosis and Scientific Method Lab Report Abstract The purpose of the lab is to see how different size potatoes have faster water movement depending on the concentration of sucrose it was placed in. We had two sized potatoes‚ 6g and 10g‚ and placed each in three different dilutions of sucrose at 0.5M‚ 0.1M‚ and 0.05M. We also placed a 6g and 10g potato piece in water to act as a control. Based on the weight percent change over 60 minutes‚ the 6g potato piece had faster water movement than the
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