Investigatory Project In Science & Technology IV (Potato Battery) Submitted by : Eloisa Umali Chelsea Jayne D. Diaz Pia Angela Valencia Acknowledgement The researchers would like to acknowledge with sincerest gratitude the following persons for the support they gave to them in the accomplishment of this investigatory project. Mrs. Rosie Castillo‚ who guide us and helped us in making this project. Who gave us the opportunity
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Description of the experiment * Aim: To observe the reactions of sulfuric acid as an oxidising agent and as a dehydrating agent. Equipment: * 20mL of concentrated sulfuric acid * 20mL of 2mol/L sulfuric acid * 2 small pieces of each of copper‚ zinc and iron * Sandpaper * 10 test tubes * Test tube rack * 2g of sugar crystals (sucrose) * 2 wooden ice-cream sticks * 10mL measuring cylinders Steps: A: Sulfuric acid as an oxidising agent 1. Clean pieces of metal
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Wiring Techniques Course No: E03-007 Credit: 3 PDH A. Bhatia Continuing Education and Development‚ Inc. 9 Greyridge Farm Court Stony Point‚ NY 10980 P: (877) 322-5800 F: (877) 322-4774 info@cedengineering.com CHAPTER 2 WIRING TECHNIQUES LEARNING OBJECTIVES Upon completing this chapter‚ you should be able to: 1. State the basic requirements for any splice and terminal connection‚ including the preferred wirestripping method. 2. State the reason the ends of the wire are clamped down after a Western
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too brittle to use for structural materials. 2. A) Describe the uses of brass‚ steel and solder and 2 other alloys of your choice‚ and explain how these uses relate to their properties. Brass: The two major metals in brass are copper and zinc. The proportion of the copper to zinc affects the colour of the alloy‚ ranging from a rose coloured alloy to a yellow alloy. The higher the proportion of zinc‚ the greater the hardness and tensile strength of the alloy. Brass can be highly polished and is lustrous
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Flows in the Copper Industry (Technical Memo). Argonne. IL: Argonne National Laboratory‚ 1980 (Prepared for the United States Department of Energy). R.U. Ayres : Resources‚ Conser6ation and Recycling 21 (1997) 145–173 173 [22] Forrest D‚ Szekely J Austria: International Institute for Applied Systems Analysis‚ 1991. (S0144093-4). Columbus OH: Battelle-Columbus Laboratories‚ June 27‚ 1975 (Prepared for U.S. [25] Davis WE. National Inventory of Sources and Emissions: Barium‚ Boron‚ Copper‚ Selenium and
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Lab Chapter 4 4.1.1 Exercise: Standards are important for NIC‚ Connectors and Media‚ because of the Stability‚ Consistency‚ and Minimization of packet errors. 4.1.2 Exercise: Why is it so low when the capacity for transmission electricity on the copper wire is so high? Because‚ due to truncation on the transmission of voltage with an electric current. 4‚1‚3 Exercise: It’s used in the Healthcare facilities‚ because it’s more fire resistance. 4.1.4 Exercise: Category | Maximum Speed | Application
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(measured in amperes) is what is meant by electric current. In most materials‚ the direct current is proportional to the voltage (as determined by Ohm’s law)‚ provided the temperature remains constant and the material remains in the same shape and state. Copper is the most common material used for electrical.Silver is the best conductor‚ but it is expensive. It has a resistivity of 1.6×10−8 Ω⋅m. Because gold does not corrode‚ it is used for high-quality surface-to-surface contacts. However‚ there are also
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Electroplating shop: Electroplating is primarily used for depositing a layer of material to bestow a desired property to a surface that otherwise lacks that property. Mainly electroplating is used for the following purposes: * Abrasion * Wear resistance * Corrosion protection * lubricity and * Aesthetic qualities The electroplating shop of Energypac Engineering Limited consists of three sections. i) Seven color section ii) Nickel section iii) Silver section Seven color section:
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motherboard‚ which the motherboard is designed to accommodate. Yet the lightweight make up of aluminum is beneficial because it adds little weight and stress to the motherboard. One of the best and most common materials used to make heat sinks is copper. Copper has a very high thermal conductivity of 400 W/mK. It is‚ however‚ heavier than aluminum and more expensive. But for operating systems that require an extensive amount of
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platedmetals include nickel‚copper‚ and gold. While the electroplating is in progress‚ additionalsalts of the metal to be plated must continually be added to the platingsolution‚ or else the anode must be renewed‚ if it consists of the platingmetal. If the coating metal does not form a strong alloy with the metal to be plated‚ it may be necessary to first coat with an intermediate metal; for example‚ when plating silver on steel‚ it is customary to first place a coating of copper over the steel. When
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