BATTERIES What is a battery? A battery is a container consisting of one or more cells carrying an electric charge and used as a source of power. SECONDARY BATTERIES * rechargeable * high cost (short-term) low cost (long-term) * used in objects with high energy requirements: e.g. mobile phones‚ power tools * require special handling‚ containment & disposal * limited interchangeability * long life time * produce smaller amount of waste (flat discharge curve)
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INTRODUCTION “Assault” and “battery” in the context of tort law are viewed as separate offences unlike in viewpoint of criminal law where the two are typically components of a single offence. In this essay‚ the writer will discuss ‘assault and battery as understood in tort law. To properly exhaust these two torts‚ it is best to evaluate them separately according to their definitions and the help of their related case laws. Assault and battery are intentional torts meaning that in these two offences
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samples of Water. INDEX I. Introduction o Purification of Water o History of Water Purification o Bleaching Powder II. Experiment o Aim o Requirements o Theory o Procedure o Observations o Result o Precautions Introduction 98% of the Earth’s water is present in the oceans with an average salinity of 3.5%. The remainder of the Earth’s water constitutes the planet’s fresh water resource. Typically‚ fresh water is defined as water with salinity
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Road salt‚ also called rock salt‚ is sodium chloride‚ chemically combined with NaCl. Na is the chemical abbreviation for sodium and Cl is the abbreviation for chloride. Table salt that we use is exactly the same chemical. The US Environmental Protection Agency has set limits on allowable levels of chloride in water but not sodium. In high concentrations both sodium and chloride can be harmful to aquatic organisms. Sodium is the primary concern for humans‚ as it can be harmful to people with high
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Each year‚ on average‚ there are 105 snowstorms. Salt is driven around in millions of trucks across the country to help deice the roads to make way for safe travels. In the United States‚ 20 billion pounds of salt are used every year to treat the icy roads after snowstorms. Common salt‚ the salt almost every American has on their dinner table‚ NaCl is most frequently used to deice roads across the country. Salt is very cost effective and efficient when used properly‚ however it is causing more harm
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ADVANCED BATTERY TECHNOLOGY SCI/256 People‚ Science‚ and the Environment Environmental Science Dr. Larry Collins‚ Instructor SUMMORY There has been a huge increase in the need for energy worldwide for years‚ because of industrial developments and the population growth. As a result‚ there is a shortage of electricity and fuel causing the inflation of energy cost to go higher and higher. Police are directing traffic at gas stations‚ while angry frustrated people spend hours in line
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amounts in the diet may cause deficiency diseases. There are fat-soluble and water-soluble vitamins. Fat-soluble vitamins are stored in the fat tissues of our bodies‚ as well as the liver. Fat-soluble vitamins are easier to store than water-soluble ones‚ and can stay in the body as reserves for days‚ some of them for months. Water-soluble vitamins do not get stored in the body for long - they soon get expelled through urine. Water-soluble vitamins need to be replaced more often than fat-soluble ones.
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the potato in half and place them next to each other‚ flat face down on a plate 2. Connect one end of the white wire to one of the nails and then place the nail into one half of the potato. 3. Connect the other end of the white wire to the battery holder inside the digital clock. 4. Connect one of the pennies to one end of the black wire then put the penny into the same half of the potato as the nail with the connected to it. 5. Connect the other end of the black wire to the other penny
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Chemistry Salt Analysis Cheatsheet Version 2.0 © 2008 Ankur Banerjee All Rights Reserved. Only important stuff for CBSE Class 12th Chemistry practical syllabus has been included‚ not everything. 2. WE + acidified K2Cr2O7 2 = sol 3 turns green 3. WE + acidified KMnO4 = pink colour of KMnO4 is discharged 4. Sulphide: Colourless gas with a smell of rotten eggs (H2S); turns lead acetate paper black 1. Sodium nitroprusside test: WE + sodium nitroprusside 4 = purple / violet colour 2. Lead acetate
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Running head: HOW does saLT AFFECT THE BOILING POINT OF WATER? 1 How Does Salt Affect the Boiling Point of Water? Elizabeth Mompoint Everglades High School HOW does saLT AFFECT THE BOILING POINT OF WATER? 2 Abstract The purpose of this experiment was to determine whether or not salt would affect the boiling point of water. Much of the research I conducted rejected my hypothesis which stated: if I add salt to water‚ then the boiling
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