ABSTRACT The Batteries form a significant part of many electronic devices. Typical electrochemical batteries or cells convert chemical energy into electrical energy. Batteries based on the charging ability are classified into primary and secondary cells. Secondary cells are widely used because of their rechargeable nature. Presently‚ battery takes up a huge amount of space and contributes to a large part of the device’s weight. There is strong recent interest in ultrathin‚ flexible‚ safe energy storage
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put in salt water? Purpose: I want to know why the egg floats in fresh water and not salt water. I want to know if the egg will float in salt water‚ Also this shows why materials float easier in saltwater and sink in freshwater. Research: Since the egg’s density is higher than the density of freshwater the egg will sink. Density is mass per unit volume‚ which means a measure of how much mater is in a certain volume. If you add enough salt the egg will float again. The salt makes the water denser
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learned about how salt affects the freezing point of water. In my science project I wanted to see if salt affected the freezing point of water. I started by doing some experiments. My first experiment was whether tap water or salt water would freeze first. I first started by mixing up the salt water warming it for one minute and warming the tap for one minute also. My second experiment was what ice cube would melt fastest. I started by getting two bowls. Two ice cubes‚ and salt. I began by sprinkling
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using more and more household batteries. The average person owns about two button batteries‚ ten normal (A‚ AA‚ AAA‚ C‚ D‚ 9V‚ etc.) batteries‚ and throws out about eight household batteries per year. A battery is an electrochemical device with the ability to convert chemical energy to electrical energy to provide power to electronic devices. Batteries contain heavy metals such as mercury‚ lead‚ cadmium‚ and nickel‚ which can contaminate the environment when batteries are improperly disposed of. When
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use lithium batteries in its flashes‚ but Yongnuo introduced a flash‚ Canon compatible‚ that uses a lithium-ion battery. The Yongnuo Speedlite YN686EX-RT is compatible with Canon’s RT- series of flashes‚ but contrary to Canon’s units uses a lithium-ion battery said to be faster and offer 750 full-power flashes from a single charge. When lithium batteries became a common thing in the market‚ some photographers managed to fry their flashes‚ because they picked a set of AA lithium batteries and used them
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Battery Power Kevin McDonald Question How much power can I get from a tomato‚ a orange and a lemon and can it light up a small light bulb? Hypothesis If I put a copper nail and a zinc nail in a tomato‚ orange or lemon it should be able to power a small light bulb. Materials *few different citrus fruits *copper nail *galvanized (zinc) nail *LED light or opaque light bulb with a 2 inch lead *crocodile clip or electric tape *micro ammeter Procedures Step 1.Prepare your fruit for the
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Erica Mitchell Mr. Vredenburgh Period 5 52/55 The Effect of Carbon Dioxide on Salt Water Abstract Background: The human population strongly relies on the oceans for food‚ transportation‚ recreation‚ climate regulation‚ and half of the Earth’s oxygen. These oceans‚ that we rely so heavily on‚ are becoming more acidic and less hospitable‚ making ocean acidification the world’s second most important atmospheric carbon problem. This carbon is released into the atmosphere by burning fossil fuels
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ABSTRACT A Fruit battery is a device used in experiments proposed in many science textbooks around the world. It is made by inserting two different metallic objects‚ for example a galvanized nail and a copper coin‚ into an ion bridge (for example a lemon‚ a potato or paper soaked in salt water or acid). The copper coin serves as the positive electrode or cathode and the galvanized nail as the electron-producing negative electrode or anode. These two objects work as electrodes‚ causing anelectrochemical
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Potato Battery Chapter I: Introduction I. Background of the Study Do you have like 500 unused sacks of potatoes and don’t know what to do with it? Does your low class battery always die out on you at the exact moment you look at the last digit of you clock? If you answered yes‚ then here is the solution to your problem! Potato batteries are designed for you! So why do you spend so much money in buying new batteries for your digital clock if you can use the alternative resource. II. Statement
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The Fruit Battery March 19‚ 2007 7th grade Abstract My objective was to determine which fruit would make the battery for a clock. Procedure 1. Gather all things needed for experiment. 2. Wash hands for safety. 3. Take the clock module and place fruit in the two holders. 4. Remove plastic coatings at the end of all wires with scissors. 5. Take the black cable and tie one end to the Zinc metal contact. 6. Take the blue cable and tie one end to the Zinc metal
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