Use the balance to determine the mass of the rectangular solid. Record the mass to the nearest 0.01 g in the data table. Volume: Use the metric ruler to measure the length‚ width‚ and height of the rectangular solid. Record these measurements to the nearest 0.1 cm in the data table. Calculate the volume using the following formula: Volume (cm3) = length (cm) x width (cm) x height (cm)
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HISTORY OF THE PERIODIC TABLE How did the periodic table develop? Since a very long time‚ elements such as gold‚ silver‚ tin‚ copper‚ lead and mercury have been known. But the concept of elements have largely be changed since then. Many scientists did research and new scientific discoveries were found. The progress of science never ends. Lavoisier In 1789‚ French chemist Antoine Laurent Lavoisier discovered that an element is a fundamental substance that could not be broken down by
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Lesson 3.01: History of the Periodic Table 1. Explain how scientific observations led to the development of‚ and changes to‚ the periodic table. Dmitri Mendeleev- first periodic table‚ organized 63 known elements according to properties‚ organized into rows and columns. He wrote names‚ mass and chemical properties on each. Julius lothar Meyer- independently worked in German ‚ similar to Mendeleev Henry Gwyn Jeffrey’s Moseley: worked with Ernest Rutherford experimented with 38 metals‚ he found that
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Two conditions for equilibrium are that the net force acting on the object is zero‚ and the net torque acting on the object is zero. In the experiment done‚ conditions for equilibrium are observed. Equilibrant forces were determined using the force table and component methods. The unknown forces were also determined using the first and second conditions for equilibrium. Another part of the experiment was to locate the center of gravity of a composite body and to determine rotational equilibrium.
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China is a country with 5000-years-long civilization and a long and rich history‚ so Chinese like to pay more attention to the etiquette‚ especially in the table manners. Most foreigners do not know table manners when they join in Chinese dinner party because Western dining is different with Chinese. Chinese table manners have three important parts‚ including place setting‚ taboos‚ and toast. Firstly‚ the seating arrangement is one of the important parts of dinning etiquette because the order of
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Dear Sir or Madame‚ I am an undergraduate student in the Department of xxx of the University xxx‚ from where I am expected to graduate at August 2011‚ with the note "very good". I wish to continue my studies and pursue a Master’s degree in Economics with a further specialisation on the field of Applied Microeconomics. During the semester that I studied at Berlin‚ through an Erasmus Exchange Programme scholarship and afterwards being on the Board of "Erasmus Student Network" in Athens I learned
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Portfolio assignment 1: Motivation theories There are many theories about motivation from different aspects that study some phenomenon in working circumstances such as the arousal or energizing of the organism and the direction of behavior. (Vroom‚ 1984‚ p.8) Just like many important concepts in psychology‚ there is no single universally accepted definition of motivation. Arnold (2005‚ P.309) considered that “Motivation concerns what drives a person’s choice of what to do‚ and how long they keep
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Promethium‚ Pm‚ is the 61st element on the Periodic Table. It was discovered in 1945 by Jacob A. Marinsky. It’s a metal‚ and named after the Greek God Prometheus. It is not naturally occurring‚ but can survive outside of a lab. Promethium has an atomic number of 61‚ which is the number of protons. Its atomic mass‚ protons+neutrons‚ is 145u. It is an isotope. This means that it has a different number of neutrons (84) than the number of electrons and protons (61). Every element changes states
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Motivation is response Motivation ± the internalised drive towards the dominant thought of the moment. You cannot motivate anyone ± you can only create a situation to which individuals will respond because they choose to. The ingredients of motivation are within each. When we are awake the motor is running and our motivation for action is responsive to three signals ± neutral‚ forward or reverse. With stimulus‚ both internal and external‚ everything is believed to be possible. But what is happening
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Six Recommendation on Motivation theory The Goal of this Article is to analyse the various Motivation Theories for employees in the workplace environment. It attempts not to just present yet another theory of work motivation‚ rather focusing on metatheory which is the processes through which we can build more valid‚ more complete and more practical theories. The authors of this article have drafted six recommendations that they believe and feel that are the best. It is in their
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