As an aside, Mpemba was mocked by his teacher for claiming hot water freezes faster than cold water because it seemed to contradict thermodynamics. Moral of the story? Don't be so fast to dismiss the observations of a non-scientist just because they don't agree with what you think you know. In fact, that lesson probably applies to most academic disciplines and, perhaps, all of human knowledge. Skepticism of people's claims is important. The Mpemba effect occurs when two bodies of water, identical
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Energy, Work and power of the body All body activities including thinking, doing work, or keeping the body temp. constant involve energy changes, for example under resting(Basal)conditions the skeletal muscles and the heart using 25% of the body's energy ,another 19%is being used by the brain,10%is being used by the kidneys, and 27% is being used by the liver and the spleen. A small percent of about 5% of food energy being excreted in feces and urine. Extra food energy will be stored mainly as fat
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little longer. Somehow, the hot water must be able to lose its heat faster than the cold water. Evaporation- Theoretical calculations have shown that evaporation can explain the Mpemba effect if you assume that the water loses heat solely through evaporation . When the initially warmer water cools to the initial temperature of the initially cooler water, it may lose significant amounts of water to evaporation. The reduced mass will make it easier for the water to cool and freeze. Then the initially
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TECHNICAL REPORT ON STUDENT INDUSTRIAL WORK EXPERIENCE SCHEME (SIWES) UNDERTAKEN AT THE NIGERIAN METEOROLOGICAL AGENCY (NIMET), ZARIA, KADUNA STATE SUBMITTED TO THE DEPARTMENT OF GEOGRAPHY FACULTY OF SCIENCE AHMADU BELLO UNIVERSITY, ZARIA BY SOLOMON IFETAYO ONASANYA U09GS1052 IN PARTIAL FULFILLMENT OF THE REQUIREMENT FOR THE AWARD OF BSC GEOGRAPHY JUNE – NOVEMEBER, 2012 CERTIFICATION I, Solomon Ifetayo Onasanya with Reg. No: U09GS1052 hereby certify
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Lab Report 1.2 Separating Components of a Mixture I. Objectives: 1. To know the best way of separating mixtures and substances. 2. To know the some ways of separating mixtures and substances. II. Materials: STATION 1 * White sand * Clean bottle * Rice grains * Spoons * Rags * Strainers STATION 2 * A glass of water * Table esalt * Alcohol lamp * Matches * Clean bottles * Stirring rods * Small beakers * Biscuit can
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One of the errors included the duration of time in which the hydrate was placed on top of the bunsen burner flame. The alterations in the duration of time between the two trials would lead to a difference in the amount of H2O that was capable of evaporation from the hydrate. As a result, it would affect the mass of the dehydrate recorded after the heating; therefore, the mass of the H2O would be inaccurate (as the mass of the dehydrate is subtracted from the mass of the hydrate to calculate the mass
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Nneze Akwiwu, Ruth Wangia & Bongeka Zuma General Physics 112 Dr. Derrick Hylton 02-16-2015 Desert Irrigation Problem Introduction As physics students in the second part of an introductory physics class, we have been tasked with considering the problem of famine that currently faces some parts of Africa. We have been tasked with answering the question of whether growing crops on desert land could alleviate the problem of famine if the desert was irrigated. We seek to explore
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Divergent Boundaries * Divergent means to split apart. * This creates ocean floors 1) What are the major topography divisions in the north Atlantic * Continental margins, deep ocean basins, and mid-oceanic ridge. * CM: outer margins of all continents and transition to oceanic crust * DOB: b/t the CM and ocean ridge * OR: broad linear swell @ a divergent plate boundary. * Slow spreading center has a rougher terrain than a fast spreading center
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Emma Wellington Period 8 10/22/12 (No Partner) Lab #3 Separating the Components of a Mixture I. Purpose: The purpose of this lab was to separate the sodium chloride-silicon dioxide mixture using filtration and evaporation II. Equipment and Materials: Refer to the College Preparatory Lab manual, Page 28-30 III. Procedure: Refer to the College Preparatory Lab manual, page 28-30 IV. A. Measurements; Measurements and Data for Separating the Components
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CHAPTER-1 INTRODUCTION Microelectromechanical systems (MEMS) are small integrated devices or systems that combine electrical and mechanical components. They range in size from the sub micrometer level to the millimeter level and there can be any number, from a few to millions, in a particular system. MEMS extend the fabrication techniques developed for the integrated circuit industry to add mechanical elements such as beams, gears, diaphragms, and springs to devices. Examples of MEMS device applications
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