TUTOR’S NAME: Claudette Jessop TUTORIAL DAY AND TIME: Thursday 10-12noon COURSEWORK ASSIGNMENT: Expository method- Classification DATE OF SUBMISSION: Monday 28th 2010. Essay Topic: Methods of food preservation Thesis Statement: Methods of food preservation can be categorized as use of chemical preservatives‚ removal of moisture‚ irradiation and temperature control. |Sub-topics: |Topic sentences:
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Explain what it means when we say a substance is magnetic. A substance can be picked up by a magnet. Discuss the relationship between electric and magnetic fields. The magnetic field will be perpendicular to the electric field and vice versa Before you begin your lab‚ you need to form a hypothesis that reflects which material‚ voltage‚ and number of winds you think will produce the strongest electromagnet. Record your hypothesis as an if then statement. If I use copper‚ 100 volts‚ large thickness
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Young/Freedman Course Home Assignments Roster Gradebook Item Library Instructor Resources eText Study Area H9 Chapter 28: Sources of Magnetic field‚ Ampere’s law‚ Magnetic materials Overview Summary View Diagnostics View Print View with Answers [ Edit ] H9 Chapter 28: Sources of Magnetic field‚ Ampere’s law‚ Magnetic materials Due: 11:59pm on Monday‚ November 12‚ 2012 Note: You will receive no credit for late submissions. To learn more‚ read your instructor’s Grading
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4/4/2013 Food Preservation Methods Food Preservation Using Chemicals SMY04032012 A naturally / synthetically produced substances that is added to food/beverages to prevent spoilage Preservatives: The good‚ bad and ugly! 1 4/4/2013 Sometimes‚ food may spoil because of the changes in the food itself. When food spoils‚ the following may change: • appearance • taste • texture • odour © Food – a fact of life 2007 Food may become unsafe to eat. Micro-organisms need certain
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FOOD PRESERVATION 1.0 Definition Food preservation is the process of treating and handling food to stop or slow down spoilage (loss of quality‚ edibility or nutritional value) and thus allow for longer storage. Preservation usually involves preventing the growth of bacteria‚ yeasts‚ fungi‚ and other micro-organisms (although some methods work by introducing benign bacteria‚ or fungi to the food)‚ as well as retarding the oxidation of fats which cause rancidity. Food preservation can also include
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hi 1. Which of these is not correct as a basic property of electric charges? (a) Total charges in an insulated system is invariable (b) A charged body is electrically unstable (c) * A charged body has equal number of positive and negative charges (d) Positively charged body is deficient of electrons x+q1+q2 = 2 q1 2.Calculate the distance x between charges q1 and q2 shown‚ given the repulsive force between them as 1.2 x 10-4 N‚ take the permittivity of vacuum
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advances in modified atmosphere packaging (MAP) of fruits and vegetables. An examination of the impacts of minimal processing on fruits and vegetables highlights the importance of packaging as a preservation method to maintain quality and shelf life. From this foundation‚ literature on traditional MAP as a preservation method for minimally processed fruit and vegetables is analysed. In response to identified limitations and strengths within traditional technology‚ recent developments in MAP are identified
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Ampere’s Law The line integral of the magnetic flux around a closed curve is proportional to the algebraic sum of electric currents flowing through that closed curve; or‚ in differential form curl B = J. This was later modified to add a second term when it was incorporated into Maxwell’s equations. Archimedes’ Principle A body that is submerged in a fluid is buoyed up by a force equal in magnitude to the weight of the fluid that is displaced‚ and directed upward along a line through the center
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Grade Details There are 2 pages in this exam: Page: 1 2 1. Question: (TCO 4) A body moving with an acceleration having a constant non-zero magnitude must experience a change in: Your Answer: Speed acceleration velocity CORRECT weight Instructor Explanation: Remediation: Knight‚ Chapter 1.6 Points Received: 6 of 6 2. Question: (TCO 4) A ball is dropped from a 250 foot building. How long before the ball hits the ground
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27 Magnetic Field and Magnetic Forces J. Manuel Physics 72 1st Sem AY13-14 1 27 Fundamental nature of Magnetism Magnetism Magnetic Field Magnetic Field Lines and Magnetic Flux Motion of Charged Particles in Magnetic Field Magnetic Force on a Current-Carrying Conductor Force and Torque on a Current Loop Interaction of moving electric charges Magnetic forces arise in two stages: 1. Moving charge or a collection of moving charges produces a magnetic field. 2. Current or moving
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