In some Greek experiments‚ objects attracted each other after rubbing. Other experiments produced objects that pushed away‚ or repelled‚ each other. The evidence showed that electric force made matter either attract or repel other matter. Electric force is caused by electric charge. Electric charge is a property of the bits of matter within atoms. Electric force can cause matter to attract or repel because there are two kinds of charge – positive and negative charge. The effects of electric
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Hypothesis My hypothesis is that Method 1 will be more effectice than Method 2. Materials • 10 different fruits • Salt • Soap • Water • Kettle • Ice cubes • Timer • Blender • Thermometer • Coffee filter • 99% Rubbing Alcohol • Test tubes • Steering tool • Beakers • Measuring cup • Ziplock bags Procedure Method 1: Stage 1- preparing the fruit • chop fruit in small pieces • prepare a solution of 10cm3 of
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Colour Fastness Presented By T. SRIVANI Textile testing Textile testing include: Development of new fabrics Maintenance of desired quality level Analyzing the cause of the problem in fabric Determination of acceptable consumer performance level Different kinds Tensile testing Crease recovery Abrasion testing Color fastness Burning test Fiber identification Twist measurement Stiffness testing Textural rigidity Crease
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Distance traveled by the solvent Materials: coffee filter‚ tape‚ rubbing alcohol‚ water‚ 3 different color magic markers (not permanent); 3 identical tall‚ narrow drinking glasses; metric ruler‚ 3 pencils Pre-lab Questions: 1. List one extensive and one intensive property of marker ink. Extensive – volume‚ Intensive – color 2. Define mixture. Mixture – a substance made by combining other elements together. - the process of mixing or being mixed 3. Is tap
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at other babies work and join them and scribble together. 1.1- Craft Activities for Babies 1-2 Years. 1. Texture Rubbing – Indoor (Use floor‚ shapes etc) 2. Sponge Printing 3. Frame snipping (2 Years old) 4. Play-doh 5. Hat Making 1.2- Description of one Activity Texture rubbing is when any 1 or 2 years old get any colour wax crayon and a tracing paper and rub on any indoor equipment. Such as rubbing on the floor‚ the patterns on the spoons‚ shapes
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charge‚ conductors‚ and insulators using everyday objects. Theory A charged object is any object that has an excess of negative or positive charge. Most objects are neutrally charged and we don’t normally experience their charge properties. Rubbing objects together and transferring some charge from one to the other is one way to create charged objects. Like charges repel each other and unlike charges attract each other. The charge in a conductor is free to move around‚ while the charge in an insulator
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Is Hand Washing Enough to Stop the Spread of Disease? Sep. 8‚ 2010 — Not drying your hands thoroughly after washing them could increase the spread of bacteria‚ and rubbing your hands whilst using a conventional electric hand dryer could be a contributing factor‚ according to new research. Frequently people give up drying their hands and wipe them on their clothes instead‚ but hand-hygiene is a key part of infection control and drying hands after washing is a very important part of the process.
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density‚ and due to its thickness‚ which caused the honey to weigh greater compared to the other fluids in the glass container. Rubbing
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temperature when there are 25 cricket chirps per second? Explain. 8. Crickets make their chirping sounds by rapidly rubbing their wings together. From Pierce’s data‚ we see that outdoor temperature increases as the number of cricket chirps increases. Can we conclude that the increased number of chirps causes the temperature to increase (maybe due to the heat generated from wings rubbing together)?
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washing by caregivers and children. • Rubbing hands together under running water is the most important part of washing away infectious germs. Deficiencies in hand washing‚ including sharing basins of water‚ have contributed to many outbreaks of diarrhea among children and caregivers in child-care centers. • The Centers for Disease Control (CDC) recommends these hand washing steps: • Wet your hands with clean running water and apply soap • Rub your hands together to make lather and scrub them well;
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