Universe and Inverse are closely related‚ for the effects of known forces of universe are inverse in nature. Ever since Newton made a bold proposition that there is a force of attraction amongst the planets of planetary system‚ amongst different planetary systems and amongst the different galaxies and varies as Inverse Square of their distances‚ people began to correlate every activities of nature and predict its effect accurately. 1. Kepler’s laws Tycho Brahe’s largest and most accurate collections
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Period: Date: Electrostatics: Electric charges and Coulomb’s Law problems I I. Answer the following problems. 1. Calculate the electric force between two point charges of 4.00 µC and 3.00 µC when they are 2.00 cm apart. 2. Two points of equal charge produce an electric force on each other of 3.40x10 -2 N when placed 0.100 m apart. What is the charge on each point? 3. How far apart are two point charges of 2.0x10-6 C and 4.0x10-6 C if they produce an electric force of 0.56 N? 4. Two
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Pineda‚ Carlitos Miguel Ponce M. January 9‚ 2013 AIT2A Natural Science 12 ATOM DEVELOPMENT WITH SCIENTISTS INVOLVED 400 B.C. - Democritus’ atomic theory posited that all matter is made up small indestructible units he called atoms. Democritus expanded the idea to state that matter was composed of small particles called "atoms" that could be divided no further. These atoms were all composed of the same primary matter with the only differences between them being their size‚ shape
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divided Atoms can be divided into three subatomic particles Protons Neutrons Electrons Subatomic Particles Electrons Discovered by UK physicist J.J. Thomson (1856-1940) Are negatively charged subatomic particles. Thomson’s Experiment passed electric current through gasses at low pressure sealed the gases in glass tubes fitted at both ends with metal disks called electrodes electrodes connected to source of electricity one electrode
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experiment to do‚ I decided to do an electrostatic experiment using the Franklin bell. I had to try and find different energy sources that would work for me. Any electronic instrument would give off enough electricity‚ but I eventually settled on using a electric bug zapper because it was easy to set up the crocodile clips with it. Afterwards I tried the same experiment with a television set‚ using tinfoil which gave static electricity when it was switched on and off. Investigative question: Will the aluminium
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effects of electrical charges on small-uncharged objects‚ electrical attraction and repulsion‚ creation of electrical charge‚ practical uses of electrical charges‚ and measurement of electrical force between electrical charges. Findings Electric current is the flow of electric charge. Some materials become electrically charged when rubbed together. A substance that gains electrons becomes negatively charged‚ while a substance that loses electrons becomes positively charged. Charges that are the same
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® keep it simple science ABN 54 406 994 557 (02) 6583 4333 PO Box 2575 PORT MACQUARIE NSW 2444 FAX (02) 6583 9467 www.keepitsimplescience.com.au mail@keepitsimplescience.com.au keep it simple science Photocopy Master Sheets Years 7-8 FORCES Disk filename = “02.Forces” Copying is permitted according to the Site Licence Conditions only 1 Site Licence Conditions Our product is supplied on CD • You may copy the CD for back-up only. • You may store the CD contents
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TABLE OF CONTENTS NO | TITLE | PAGE | 01 | Introduction | 3 | 02 | Democritus | 4 | 03 | Plato and Aristotle | 6 | 04 | John Dalton | 7 | 05 | J.J. Tomson | 9 | 06 | Robert Millikan | 11 | 07 | E. Goldstein | 14 | 08 | James Chadwick | 16 | 09 | Ernest Rutherford | 18 | 10 | References | 21 | INTRODUCTION It is quite remarkable to know that the work of scientist hundreds years ago lies at the heart of our understanding of the structure of atom. New Zealand scientist Ernerst
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between them can become depleted of charge carriers‚ and hence non-conductive‚ depending on the relative voltages of the two semiconductor regions. By manipulating this non-conductive layer‚ p–n junctions are commonly used as diodes: circuit elements that allow a flow of electricity in one direction but not in the other (opposite) direction. This property is explained in terms of forward bias and reverse bias‚ where the term bias refers to an application of electric voltage to the p–n junction. [edit]
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with a charge 3 C and a mass 0.4 kg accelerates from rest to a speed of 19 m/s. Calculate the kinetic energy gained. Answer in units of J. 002 (part 2 of 2) 10.0 points Through how large a potential difference did the object fall? Answer in units of V. 003 (part 1 of 2) 10.0 points Consider three charges arranged as shown. 7 µC 1.8 µC + + 4 cm −1 µC − 2.4 cm What is the magnitude of the electric field strength at a point 1.7 cm to the left of the middle charge? The value
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