enough Hydrochloric acid into a beaker. (3) Using your wire‚ dip it into the beaker containing Hydrochloric acid (4) Place it into the flame for a few seconds; this is the cleaning method to avoid contamination of other solutions. If the Bunsen burner flame does not change colour‚ then your wire is clean and you can proceed to dip it into a metal salt. (5) Dip your wire into a metal salt either the nitrate or chloride and place the wire onto the tip of the blue flame. (6) Observe the change
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a large scale commercially. An incandescent light bulb is an electric light which produces light with a filament wire heated to a high temperature by an electric current passing through it‚ until it glows. The hot filament is protected from oxidation with a glass bulb that is filled with inert gas. The light bulb is supplied with electrical current by feed-through terminals or wires embedded in the glass. Most bulbs are used in a socket which provides mechanical support and electrical connections
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Vinegar as Alternative Battery An Investigatory Project Presented to The Faculty of the High School Department Surigao Education Center Km. 2‚ Surigao City _______________________________________________ In Partial Fulfillment of the Requirements in Physics IV _______________________________________________ By: Edradan‚ Dhaniel Jefferson Yaun‚ Mary Allyssa Concon‚ Leonel Galos‚ Jancirfil Jimena‚ Rimar Villarojo‚ Kerr March 2013 APPROVAL SHEET Vinegar as Alternative Battery Prepared &
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Procedure: 1. The compass was placed on the lab table with no magnets nearby to identify what direction was north relative to the classroom. 2. On the ends of the variable gap magnet there were two small magnetic disks. One arm of the magnet was unscrewed and removed from its housing. A meter stick was placed on the and the arm was on its side parallel to the meter stick. The Gauss-Tesla meter was used to measure the field strength of the magnet. The probe attached to the meter was perpendicular
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couple nails and a piece of wire to make a potato battery. It’s a fun science project that helps show the way things work in a battery by using everyday items we see around the house. The goal is to learn more about electricity‚ and possibly a few new science terms along the way. III Materials: * Two Potatoes * Two short pieces of heavy copper wire * Two common galvanized nails * Three alligator clip/wire units (alligator clips connected to each other with wire) * One simple low-voltage bulb
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this‚ there were more damage and kills than ever before. To start with‚ one invention that was made to assist in the war was barbed wire‚ In the 1860s the U.S. used barbed wire to pen cattle but more importantly used it to defend the front lines of trench warfare. However German wire was stronger‚ longer‚ and had bigger barbs on it. If you were to cut the wire it would just become more tangled‚ this helped the Allied offensive in July of 1916. At night‚ there were "Wiring Parties" in which enemies
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adjust it to however bright or dim we want it to be to help in different situations. Problem What materials can be used to make a dimmer switch? Hypotheses If we replace the pencil lead with a piece of rubber tubing or an insulated copper wire‚ the brightness of the light bulb will decrease. Research Dimmers were first introduced by Granville Woods in 1892 for theater use. The early dimmers were made for commercial purposes like theaters and halls. They were produced using heavy
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about 1/2 inch in diameter and not very flexible. Thicknet is older and not very common anymore except as a backbone within and between buildings. Coax transmits at 10 Mbps.. Twisted Pair. Twisted pair looks like telephone wire and consists of insulated strands of copper wire twisted together. There are two versions of twisted pair cable: Shielded Twisted Pair (STP) and Unshielded Twisted Pair (UTP). STP is commonly used in Token Ring networks and UTP in Ethernet networks where it is referred to
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After the invention of the cotton gin‚ the surrender of raw cotton doubled each decade after 1800. Demand for cotton was fueled by other inventions of the Industrial Revolution‚ such as the machines to spin and weave it and the steamboat to transport it. At mid century the South provided three-fifths of America’s exports‚ most of it in cotton. The cotton gin gave birth to the American mass-production concept and brought the South prosperity‚ but still contributed to the growth of slavery. While
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organizing them by type there were three specific defects that accounted for 80.97% of the total defects. Going from most to least number of defects by cause‚ 31.17% happened from abraded wire‚ 25.51% from broken leads‚ 24.29% from failed tests‚ 8.91% from wrong wire‚ 4.05% from bad wind‚ 3.64% from twisted wire‚ and 2.43% from wrong core. So after looking at the Pareto Chart I made (Figure 1.1) it looks like 80.97% of the defects were from three causes. With this information‚ I had to see if it was
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