favors species that existed for a long time‚ were abundant and wide spread in certain kinds of environment and had hard shells. 2. Radiometric dating can be used to determine the absolute age of rocks strata because a radioactive parent isotope decays to a daughter isotope at a constant rate. The rate of decay is measured in half life. Measurement of magnetism
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The world trembled when America dropped the atom bombs on Hiroshima and Nagasaki. The world trembled once again years later‚ but this time to the heavy steps of Godzilla. Along with him came his highly radioactive body leaving trails of radioactive residue. His main abilities were his plasma breath ray‚ immunity to normal weapons‚ giant strength‚ and he can reproduce a-sexually. He was created for a horror movie that showed the effect of what worried the Japanese at the time- Nuclear weapons. In
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The Fukushima Nuclear Disaster A First-Hand Account of Japan’s Nuclear Crisis Katsumi Furitsu . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .28 Young doctors speak out on the Fukushima disaster . . . . . . . . . . .40 Japan’s Nuclear Nightmare Ronald McCoy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .41 “A terribly difficult situation with a lot of uncertainties”: PSR Press Conference . . . . . . . . . . . . .
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Chapter 1: Biology- The study of life A Hierarchy of Organization 1. Molecules 2. Organelle 3. Cell 4. Tissue 5. Organ 6. Organism Emergent Properties- Novel properties that emerge as each step up the hierarchy of biological order is taken. Reductionism- Reducing complex systems to simpler components that are more manageable to study. Cells- The lowest level of structure capable of performing all the activities of life‚ all organisms are composed of cells which are the basic units of structure
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Centre Number Surname Other Names Candidate Signature Candidate Number For Examiner’s Use Examiner’s Initials Question Mark General Certificate of Secondary Education Higher Tier June 2011 1 2 3 4 5 6 TOTAL Science B Unit Physics P1 PHY1H Physics Unit Physics P1 Friday 17 June 2011 1.30 pm to 2.15 pm H For this paper you must have: a ruler. You may use a calculator. Time allowed 45 minutes Instructions Use black ink or black ball-point pen. Fill in
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represented by first-order differential equations. In chapter 2 we have discussed few methods to solve first order differential equations. We solve in this chapter first-order differential equations modeling phenomena of cooling‚ population growth‚ radioactive decay‚ mixture of salt solutions‚ series circuits‚ survivability with AIDS‚ draining a tank‚ economics and finance‚ drug distribution‚ pursuit problem and harvesting of renewable natural resources. 4.1 Cooling/Warming law We have seen in Section
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CHEMISTRY FOR HUMAN WELFARE: IT’S PROMISES AND CONCERNS 2011 had been officially declared “The International Year of Chemistry” t o commemorate the achievements of chemistry and its contributions to mankind. It is so fitting that 2011 is the centenary year for the award of Nobel Prize to Marie Curie for her discovery of Radium and Polonium. Also this is the 150th birth anniversary of Dr. P .C Roy. All living things in this beautiful world are nothing but
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bus 9.2 – Production of Materials: Δ. Construct word and balanced formulae equations of all chemical reactions as they are encountered in this module: • Basic reactions to remember: – Acid reactions: ▪ acid + base [pic] salt + water HCl(aq) + NaOH(aq) [pic]NaCl(s) + H2O(l) ▪ acid + metal [pic] salt + hydrogen gas HCl(aq) + Mg(s)[pic]MgCl2(s) + H2 (g) ▪ acid + carbonate [pic] salt + carbon dioxide gas + water HCl(aq) + CaCO3(s)[pic] CaCl(s) + CO2(g) + H2O
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various reactors serviced different companies and suppliers including General Electric‚ Toshiba‚ and Hitachi. On March 11th‚ 2011‚ an earthquake and subsequent tsunami caused a series of equipment failures‚ nuclear meltdowns and releases of radioactive materials. According to the International Business Times (Australia) "Fukushima is not the worst nuclear accident ever but it is the most complicated and the most dramatic disaster.” (IBT‚ 01) On April 2011 The Nuclear Institute rated the disaster
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useful work. Satellites=free fall. Ionizing radiation=energy in the form of waves or paricle Beta radiation-just an electron‚ wont go through skin but really bad inside you alpha- he2+ nucleus-wont go through skin but bad once inside. Comes from radioactive particles like lead 210 or iodine. gamma- high energy photon‚ may go through you. neutrineos-noninteracting‚ come from fusion‚ cosmic rays-very powerful. Come from supernovas. Moves at speed of light moderator-slows neutrons b/c they are absorbed
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