Materials The materials that are need are iron filings‚ salt‚ small stones‚sand‚ beakers‚ water‚ magnet‚ bunsen burner‚ striker‚ ring stand‚ wire gauze‚ ceramic square‚ a funnel and water. Procedure The first step is to take out the stones out of the mixture from the beaker. The second step is to use a magnet to get the iron fillings out. The iron filings are attracted to the magnet‚ so they
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The paintings “The Lifeline” by Winslow Homer and “Prairie on Fire” by Charles Deas are two paintings that really struck out to me as similar. I think Homer’s painting‚ “The Lifeline”‚ is a very dramatic painting because of how the lady is just laying there passed out while this brave man is swinging across dangerous waves and rocks to get them to safety. Its very different from looking at in class because you can actually see the texture and brush strokes the artist used. When standing in front
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DESIGN AND CONSTRUCTION OF A SPOT WELDING MACHINE A project report submitted to the Department of Mechanical Engineering‚ Khulna University of Engineering & Technology in partial fulfillment of the requirements for the degree of ―Bachelor of Science in Mechanical Engineering‖ SUPERVISED BY: SUBMITTED BY: Dr. Naseem Ahmed Professor Department of Mechanical Engineering KUET Md. Musaddiq Reza Roll no. 0605078 Raihan kabir Roll no. 0605084 DEPARTMENT OF MECHANICAL ENGINEERING
Free Welding
substances do not catch fire or burn as long as its temperature is lower than its ignition temperature. Now let me do an activity which tells you why reaching ignition temperature is necessary to burn an object. You know that paper catch fire with a flame. Let me
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step in this experiment was to weigh and record an empty 100mL beaker. Then fill the beaker approximately halfway‚ weigh it and record the weight. Record the weight of the water in the beaker. Place a piece of aluminum foil on a table top. Place a wire burner stand with the beaker full of water in the center of the aluminum foil and place a candle next to the rack. Measure the weight of one marshmallow and the weight of one fork. Record both measurements. Then place the marshmallow on the fork
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Bionics (also known as biomimicry‚ biomimetics‚ bio-inspiration‚ biognosis‚ and close to bionical creativity engineering) is the application of biological methods and systems found in nature to the study and design of engineering systems and modern technology. The word bionic was coined by Jack E. Steele in 1958‚ possibly originating from the Greek word βίον‚ bíon‚ pronounced [bi:on] ("bee-on")‚ meaning ’unit of life’ and the suffix -ic‚ meaning ’like’ or ’in the manner of’‚ hence ’like life’
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-1Determination of an Unknown Liquid (2-butanol) Through Fundamental Analysis Lee Billips Department of Chemistry‚ Shippensburg University‚ 1871 Old Main Drive. Shippensburg‚ PA‚ 17257. Abstract: The identification and characterization of unknowns are an important part of organic chemistry. It is fundamental to know experimental methods to deductively identify compounds (1) . The determination of unknown #6 (2-butanol) was identified by a series of test; first taking the boiling point (94-96
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• Gas connection • Plastic tubing • Inoculating loop • 12 sterile glass slides • Wax pencil • Igniter • Crystal violet dye • Gram’s iodine • Ethyl alcohol • Safranin dye • Paper towels • Wire rack • Sink • Brightfield compound microscope • Lens paper • Immersion oil • Pen and paper Methods I. Collecting the environmental specimens: 1. Place some distilled water into the test tube. 2. Open one package of
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Light the candle. 2. Pour the vinegar into the bottle and add the baking soda. (You may want to use a funnel.) The mixture should fizz. 3. Hold the bottle sideways over the lighted candle‚ making sure no liquid escapes. What happens to the flame? Explanation: The baking soda and vinegar react to make carbon dioxide‚ a gas that is heavier than oxygen. As it "pours" out of the bottle‚ it pushes the lighter oxygen away from the candle. The fire‚ now deprived of oxygen‚ can no longer burn.
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(Tell Me More About...) To aseptically transfer bacteria from an unknown to a tube of liquid broth you have to flame the loop or wire before you begin to sterilize it. You then remove the caps from the tubes and flame the mouths of the tubes to prevent air-borne contamination. When all this is done‚ you have to pick up the inoculum or unknown culture by running the sterile loop or wire down into the tube. Once you got the inoculum you drop it into the sterile medium to inoculate it. 2. What is
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