M13/5/MATME/SP1/ENG/TZ1/XX 22137303 mathematics STANDARD level Paper 1 Candidate session number 0 0 Thursday 9 May 2013 (afternoon) Examination code 2 1 hour 30 minutes 2 1 3 – 7 3 0 3 instructions to candidates Write your session number in the boxes above. not open this examination paper until instructed to do so. Do You are not permitted access to any calculator for this paper. Section A: answer all questions in the boxes provided
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GCE MARKING SCHEME BIOLOGY/HUMAN BIOLOGY (NEW) AS/Advanced JANUARY 2010 INTRODUCTION The marking schemes which follow were those used by WJEC for the January 2010 examination in GCE BIOLOGY/HUMAN BIOLOGY (NEW). They were finalised after detailed discussion at examiners’ conferences by all the examiners involved in the assessment. The conferences were held shortly after the papers were taken so that reference could be made to the full range of candidates’ responses‚ with photocopied
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Organic Chemistry - Introduction 1 2812 Basic definitions for organic chemistry Scope Organic chemistry is a vast subject so it is easier to split it into small sections for study. This is usually done by studying compounds which behave in a similar way because they have a particular atom‚ or group of atoms‚ (FUNCTIONAL GROUP) in their structure. Catenation The ability to form bonds between atoms of the same element. Carbon catenates to form chains and rings‚ with single‚ double
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* Would the introduction of maximum prices by a government solve the problem of scarcity: Scarcity results from scarce resources and unlimited wants. An effective maximum price would be set below the market equilibrium. Unless the government took additional measures it would result in excess demand and a smaller quantity sold at a lower price. While some would benefit from lower prices others would now go without the good. Overall the action would not reduce the level of scarcity. * Discuss
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• The equilibrium law DYNAMIC EQUILIBRIUM forward A +8 reaction ""r=====~’~ reverse reaction Most chemical reactions do not go to completion. Once some products are formed the reverse reaction can take place to reform the reactants. In a closed system the concentrations of all the reactants and products will eventually become constant. Such a system is said to be in a state of dynamic equilibrium. The forward and reverse reactions continue to occur‚ but at equilibrium
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Union/Management relations the past and future 1 A labor union is defined as a formal association of workers that promotes the interests of its members through collective action. Unions base their collective actions on the following factors: wages‚ benefits‚ working conditions‚ and on representing their members in disputes with management over violations of contracts. Labor unions can be a challenge for some managers because if the
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Our Place in the Universe Science is the process of creating ideas and the “what” and “how” of the universe. What is our place in the universe? How did we end up here? What even is the universe? To start off‚ I define the universe as all matter and energy that exists. Our cosmic address in the universe begins at our galaxy in the local group‚ which is an island of stars in space held together by gravity and all orbiting a common center. Besides our galaxy there are about 40 other galaxies in
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Our Town In the play Our Town by Thornton Wilder‚ Wilder uses the experience of young girl to symbolize his themes throughout his play. These themes revolve around the essence of Human Companionship‚ the representation of life and death through day and night‚ and the value of life and how it is a special gift. Wilder’s character Emily‚ who’s experience he uses‚ is a typical American girl in the early 1900’s who is just living out her life in the typical American Town of Grover’s Corners in
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Virtual Reality: The Past‚ The Present‚ and The Future Clinton M. Lawrence INF103: Computer Literacy (ACF1132D) Instructor: Troy O’Neal September 5‚ 2011 Virtual reality (VR) is a term that applies to computer-simulated environments that can simulate physical presence in places in the real world‚ as well as in imaginary worlds. Over the next few minutes I will give you a well designed overlook of how over the years we have advanced in the field of virtual reality or as more commonly know as
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Bryan Cane Carl Christopher Econ 5113 05/05/11 The Euro Past‚ Present and Future Introduction On the 1st of January 1999 the nations of Europe made their individual national currencies denominations of one single currency (the Euro). The Euro-system (European Central Bank (ECB) and the national banks of the participating countries) was now responsible for the monetary policy for the European area. “The Euro was implemented with the goal of creating a more stable European economy” (History
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