2010 HIGHER SCHOOL CERTIFIC ATE EXAMINATION Physics Centre Number Section I (continued) Part B – 55 marks Attempt Questions 21–32 Allow about 1 hour and 40 minutes for this part Student Number Answer the questions in the spaces provided. These spaces provide guidance for the expected length of response. Show all relevant working in questions involving calculations. Question 21 (2 marks) The optimum angle for safe re-entry of a space vehicle into Earth’s atmosphere is angle B. Outline
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Measuring the Resistivity of Copper Wire of Different Lengths In this report I will be writing about the experiment I will conduct on copper wire of different lengths. The dependent variable I will be measuring is the resistance of the Copper wire. To do this experiment‚ one needs to obtain measurements with a high degree of accuracy‚ taking care of the equipment they use and measuring each value to a certain degree of accuracy for all results. The problem with measuring the resistivity of Copper
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A variety of representations were used to represent subject matter. Words such as “words”‚ “pictures” and “artefacts” within the concept map suggests that both textual and visual representations would be used during instruction to promote conceptual understanding of the topic. The inclusion of apparatus such as magnets‚ coils and galvanometers in the concept maps suggests that scientific tools would be used as forms of representations to transform subject matter knowledge into knowledge suitable
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Date: 13.10.2012 Student Exploration: Magnetism Vocabulary: attract‚ bar magnet‚ ferromagnetic‚ magnetize‚ North Pole‚ repel‚ South Pole Prior Knowledge Questions (Do these BEFORE using the Gizmo.) 1. What happens when you place two magnets close together? It depends on the sides when the two North Pole sides are meant then they get pulled together. And if it should be the opposite way then they will move each other away. 2. What objects do magnets stick to? Make a list
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CBSE XII | PHYSICS Sample Paper - 1 CBSE Board Class XII Physics Sample Paper - 1 Time: Three Hours Maximum Marks: 70 General Instructions (a) All questions are compulsory. (b) There are 29 questions in total. Questions 1 to 8 carry one mark each‚ questions 9 to 16 carry two marks each‚ questions 17 to 25 carry three marks each and questions 27 to 29 carry five marks each. (c) Question 26 is a value based question carrying four marks. (d) There is no overall choice. However‚ an internal choice
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Abstract α-amylase was immobilized covalently on iron oxide magnetic nanoparticles. The synthesis of magnetic nanoparticles was done by the coprecipitation conventional method. The chemical composition and particle size of the synthesized particles was confirmed via X-ray diffraction. Tyrosine‚ Lucien and chitosan and glutaraldehyde were investigated to make a covalent binding between the iron oxide magnetic core and the immobilized enzyme. Immobilization using chitosan and glutaraldehyde show
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Electrical technology – assignment 4 Properties of electrical materials and Effective use of technology P.5. Describe the properties and a typical application of a solid and a liquid or gas electrical conductor. A conductor is a material that allows free movement of electrons and therefore allows easy flow of electricity. Most conductors are metals. A common metal used as a conductor in electrical technology is aluminium. It is used quite a lot as it cheap‚ lightweight and in abundance compared
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Many assumptions and ideas were brought about throughout the following years‚ but it was not until the 1970’s that Japan and Germany showed interest in it and began researching and designing. The motion of the Maglev train is based purely on magnetism and magnetic fields. This magnetic field is produced by using high-powered electromagnets. By using magnetic fields‚ the Maglev train can be levitated above its track‚ or guideway‚ and propelled forward. Wheels‚ contact with the track‚ and moving
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Electric Motors and Drives This Page Intentionally Left Blank Electric Motors and Drives Fundamentals‚ Types and Applications Third edition Austin Hughes Senior Fellow‚ School of Electronic and Electrical Engineering‚ University of Leeds AMSTERDAM • BOSTON • HEIDELBERG • LONDON • NEW YORK • OXFORD PARIS • SAN DIEGO • SAN FRANCISCO • SINGAPORE • SYDNEY • TOKYO Newnes is an imprint of Elsevier Newnes is an imprint of Elsevier Linacre House‚ Jordan Hill‚ Oxford OX2 8DP 30 Corporate
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Magnetic particle inspection (MPI) - Is a non-destructive testing (NDT) process for detecting surface and slightly subsurface discontinuities in ferroelectric materials such as iron‚ nickel‚ cobalt‚ and some of their alloys. The process puts a magnetic field into the part. The piece can be magnetized by direct or indirect magnetization. Direct magnetization occurs when the electric current is passed through the test object and a magnetic field is formed in the material. Indirect magnetization occurs
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