➢ Characteristics: • Liza Asnan She is a good and loving child that aims to finish her studies and to have a school allowance through searching for tin cans‚ bottles‚ plastics or anything that can be sold at Junkshop. Through this‚ she is able to go to school. She is also a kind person for she never fights back to those people who tease her. • Jiboy Ruiz Like Liza Asnan‚ he also sells tin cans‚ plastics‚ and bottles for himself and
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Printing Final Cutting Dry film Stripping Etching Tin Stripping Q.C. Mechanical Operation * Sheet Cutting :- Measure the size of PCB from film or Artwork. L W Panel Sz. * Board Area PCB Sz. Boarder Area * Laminates or Copper Sheet :1. Glass Epoxy 2. Paper fenolic 3.Teflon 4. Ceramick (CEM) * Glass Epoxy :- Thickness S/S 1.6 35/0 Cu Thickness Insulating Material thickness D/S 0.8-18/18 1.6-18/18
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UNIVERSITY OF CAMBRIDGE INTERNATIONAL EXAMINATIONS International General Certificate of Secondary Education *1144188971* COMBINED SCIENCE Paper 2 (Core) 0653/21 October/November 2010 1 hour 15 minutes Candidates answer on the Question Paper. No Additional Materials are required. READ THESE INSTRUCTIONS FIRST Write your Centre number‚ candidate number and name on all the work you hand in. Write in dark blue or black pen. You may use a soft pencil for any diagrams‚ graphs‚ tables or rough working
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will be based on these only. (1‚ 2‚ 3‚ 12‚ 13‚ 18‚ 19‚ 21‚ 22‚ 29‚ 31‚ 32‚ 44) 1. A proton beam in an accelerator carries a current of 125 A. If the beam is incident on a target‚ how many protons strike the target in a period of 23.0 s? 2. A copper wire has a circular cross section with a radius of 1.25 mm. (a) If the wire carries a current of 3.70 A‚ find the drift speed of the electrons in this wire. 3. An aluminum wire having a cross-sectional area equal to 4.00 10–6 m2 carries a current
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Zinc‚ copper‚ and lead are three of the most common heavy metals released from road travel‚ accounting for at least 90 of the total metals in road runoff. Lead concentrations‚ however‚ consistently have been decreasing since leaded gasoline was discontinued. Smaller amounts of many other metals‚ such as nickel and cadmium‚ are also found in road runoff and exhaust. About half of the zinc and copper contribution to the environment from urbanization is from automobiles. Brakes release copper‚ while
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Title : WORK INSTRUCTION OF VALVE REPAIR AND REFURBISH FOR BTE 16” CLASS 1500-SF CILIPADI VALVE Prepared by: Reviewed by: Approved by: Reviewed by: (SSB 1) Reviewed by: (SSB 2) Sign: Name: Position/Indicator: Date: Repair and Refurbish of Pipeline Valves 1 Scope This recommended practice (RP)provides guidelines for the repair and refurbish of steel ball‚ check‚ gate‚ and plug valves normally use in pipeline applications
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loops and the current intensity‚ affect the strength of the magnetic field of an electromagnet. Materials: Power pack‚ 4 connecting wires‚ switch‚ ammeter‚ paperclips‚ iron nail‚ copper wire. PART A: TESTING THE NUMBER OF LOOPS Procedure: 1. Create an electromagnet made of an iron nail with 5 loops of copper wire around it. 2. Draw a circuit diagram including the components in the materials list above‚ except the paperclips. 3. Build the circuit you drew in step 2‚ making sure all
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diameters and lengths of the two metal cylinders and the copper wire (ii) Determination of mass of same (iii) Computation of densities of the cylinders and comparison with the acceptable values. Materials used Equiptment 1. Triple- beam balance 2. Vernier Caliper 3. Micrometer 4. Electronic balance (to measure mass of copper wire) 5. A ruler (inches and centimeters) 6. Graduated Cylinder 7. A roll of copper wire. 8. Wire Cutter 9. Irregular object (lead‚
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coating a metal object with a thin layer of another metal by means of electrolysis. 2) What is Copper Plating? Copper plating is a coating of copper metal on another material‚ often other metals. Plating is designed to increase durability‚ strength‚ or visual appeal‚ and copper plating specifically is often used to improve heat and electrical conductivity. 3) What are the uses of electro-plating/copper plating? Electroplating is used to give metal objects a better appearance or to protect them
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1) TO STUDY THE VARIATION OF RESISTANCE WITH THE NATURE OF MATERIAL For this Nichrome and copper wires of same length (1m) and area of cross section(0.5mm) are taken. One of them (say nichrome) is connected in the circuit and the rheostat is adjusted to get a voltage(V) in the circuit. The corresponding ammeter reading(I) is noted and the ratio V/I=R is calculated. The procedure is repeated for different values of voltage
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