glass with fur‚ or a plastic comb through the hair‚ can build up triboelectricity. The rod is made of glass‚ and is what is generally known as a friction rod.In the case of the glass rod‚it begins electrically neutral but electrons are stripped away from the atoms in the glass when it was rubbed into the fabric cloth (PE uniform).The electrons are now transferred to the fabric cloth (PE uniform).Leaving the glass rod with more positive than negative charge and giving it a net positive charge.
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[1] Theory Background [2] Considering the heat lost by forced convection form the test rod. The amount of heat transferred is given by (1) Where = rate of heat transfer‚ unknown value. = film heat transfer coefficient‚ this is what we need to found out. A = area for heat transfer‚ this is the area of the cross section area of test section. T = temperature of the copper rod‚ the temperature after heating. Ta = temperature of air‚ surrounding temperature. So
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Procedure for mixing concrete 1. Weigh out the designed proportions for a 1.6 cubic foot batch of concrete. a. Divide the water into two buckets‚ one with about 3/4 of the water. If using air entraining‚ put the air entraining agent in the 3/4 water bucket. 2. Put about half the coarse aggregate‚ half the fine aggregate and the 3/4 bucket of water with air entraining in the mixer. 3. Start the mixer and mix until the aggregate is thoroughly wet 4. Carefully add all the cement with the mixer
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Maintenance Treatment or MMT and Rapid Opioid Detoxification ROD. While ROD is dangerous‚ and costly with few lasting results‚ Methadone Maintenance Treatment offers opiate addicts a safer‚ less expensive alternative with high success rates. While the argument persists that MMT programs are allowing the addict to trade one substance for another‚ the means of this justifies the end‚ and offers the addict a way out. Rapid Opioid Detoxification (ROD) is based on the theory that persons addicted to opiate
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Metals and alloys for nuclear energy There are two important ways in the making of nuclear energy: nuclear fission and nuclear fusion. Fusion and fission have a different working mechanisms‚ thus other materials are used. In a nuclear reactor fuel rods are bombarded with neutrons causing fission of the fuel. This way energy is released. With this energy water is heated to steam and with the use of heat exchangers and steam turbines electricity is generated. As fuel is usually uranium used‚ but also
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index measured in a laboratory ball mill (kilowatt-hours per metric or short ton) • P80 is the mill circuit product size in micrometers • F80 is the mill circuit feed size in micrometers. Rod mill A rotating drum causes friction and attrition between steel rods and ore particles. But note that the term ’rod mill’ is also used as a synonym for a
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Materials * 400 ML beaker * Glass rod * 3 to 5 grams of hydrated copper (II) sulfate CuSO4 (crushed) * Bunsen burner * Spatula * Heating pad * Clamp and stand * Electronic balance Procedures Refer to Lab sheet Observations 1. The powder seems to be very bright and shiny before any heating 2. The blue powder are starting to lose some of its color and into a light gray to white color 3. At first‚ the blue powder adheres to the stirring rod‚ but after burning it for few minutes
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MEC411 Faculty of Mechanical Engineering Engineering Mechanics Centre of Studies V{tÑàxÜ E Axial Loading Materials for this chapter are taken from : 1. 2. Ferdinand P. Beer‚ E. Russell Johnston‚Jr‚ John T. Dewolf‚ David F. Mazurek “ Mechanics of Materials” 5th Edition in SI units R.C.Hibbeler “ Mechanics of Materials “ Seventh Edition Ch 2 - 1 MEC411 Faculty of Mechanical Engineering Engineering Mechanics Centre of Studies Introduction Suitability of a structure or machine
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Drilling rig A drilling rig is a machine which creates holes in the ground. Drilling rigs can be massive structures housing equipment used to drill water wells‚ oil wells‚ or natural gas extraction wells‚ or they can be small enough to be moved manually by one person. They sample sub-surface mineral deposits‚ test rock‚ soil and groundwater physical properties‚ and also can be used to install sub-surface fabrications‚ such as underground utilities‚ instrumentation‚ tunnels or wells. Drilling rigs
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1.)We went fishing the first morning. 2.) I felt the same damp moss covering the worms in the bait can‚ and saw the dragonfly alight on the tip of my rod as it hovered a few inches from the surface of the water. 3.) It was the arrival of this fly that convinced me beyond any doubt that everything was as it always had been that the years were a mirage and there had been no years. 4.) The small waves were the same‚ chucking the rowboat under the chin as we fished
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