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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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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13 - ELECTROSTATICS ( Answers at the end of all questions ) Page 1 t ) Two point charges + 8q and - 2q are located at x 0 and lt L respectively. The location of a point on the x axis at which the net electric field due to these two point charges is zero is (a) Ll4 (b) 2L (c) 4L (d) 8L Two thin wire rings each having a radius R are placed at a distance axes coinciding. The charges on the two rings are + q and - q. The between the centres of the two rings is (a)-q- 1 2~~:eo = =
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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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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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Definition of Capacitance 1. (a) How much charge is on each plate of a 4.00-μF capacitor when it is connected to a 12.0-V battery? (b) If this same capacitor is connected to a 1.50-V battery‚ what charge is stored? 2. Two conductors having net charges of +10.0 μC and –10.0 μC have a potential difference of 10.0 V between them. (a) Determine the capacitance of the system. (b) What is the potential difference between the two conductors if the charges on each are increased to +100 μC and –100 μC
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Zinc Reacts with Vinegar’s Acetic Acid To Produce Electricity March 7‚ 2014 Abstract This research is about the chemical reaction of zinc with acetic acid to produce a short amount of electricity. Even though it only conducts a small amount of voltage‚ we investigated and experimented on how it can produce more than usual without adding any other components on the project except zinc‚ copper‚ vinegar‚ or a unique container that can increase the voltage of our product. The zinc can produce
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Science Study Notes An electrically uncharged object is neutral. Conduction is not a method of charging an object. If electric charged stay in one spot‚ they are said to be static. In charging by induction‚ when a negatively charged rod is brought near a metal leaf electroscope the electrons in the electroscope move away from the rod. A statement that is not part of the Law of Electric Charges is that neutral objects are attracted to uncharged objects. The purpose of a GFCI is to protect people from getting
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travels at about the same speed in all of the above media. 5) 6) 7) 8) 1 9) Two charges separated by one meter exert 1-N forces on each other. If the magnitude of each charge is doubled‚ the force on each charge is A) 1 N. B) 4 N. C) 2 N. D) 8 N. E) None of the above choices are correct. 10) Electric potential‚ measured in volts‚ is the ratio of electric energy to amount of electric A) charge. B) resistance. C) voltage. D) current. E) None of the above choices are correct.
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are supposed to conduct electricity is because of the charge of the molecule‚ ionic compounds can have either a really positive or a really negative charge. This charge in the molecule makes it easier to electrons to move from molecule to molecule; therefore an electric current is generated. On the other hand‚ covalent compounds‚ either polar or non-polar‚ are not capable of conducting electricity. This is because they have more balanced charges and it is harder for electrons to move from one particle
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