FORCE ALWAYS HAS FOUR PROPERTIES: 1. It can be expressed as the difference between the initial and final values of a potential-energy function. 3. It is independent of the path of the body and depends only on the starting and ending points. 2. It is reversible. 4. When the starting and ending points are the same‚ the total work is zero. The total mechanical energy ME = K + U is constant. Object moving in a uniform gravitational field gravitational a U = Fh = mgh d ha F=mg Wab =
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UNIVERSITY ENTRANCE EXAMINATION PHYSICS Duration : 2 hours Please read the following instructions carefully. 1. This paper is made up of 50 Multiple-Choice questions and comprises ELEVEN (11) printed pages. 2. Do not write on the question paper. 3. Answer all questions and indicate your answers on the answer sheet provided. Marks will not be deducted for wrong answers. 4. Do not take any paper‚ including the question paper or unused answer sheets‚ out of the examination
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Potential Energy • Definition and Mathematics of Work • Calculating the Amount of Work Done by Forces • Potential Energy • Kinetic Energy • Mechanical Energy • Power An object can store energy as the result of its position. For example‚ the heavy ball of a demolition machine is storing energy when it is held at an elevated position. This stored energy of position is referred to as potential energy. Similarly‚ a drawn bow is able to store energy as the result of its position. When assuming
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American Greatness in the Revolutionary War Battle of Lexington and Concord The Battle of Lexington and Concord took place on the 18th of April‚ 1775. British plans were discovered to send 700 soldiers to Concord‚ a town outside of Boston. Their plans were to destroy guns and ammunition that were being stored in the town. They were also planning to arrest Samuel Adams and John Hancock‚ who were two of the leaders of the patriot movement. The Americans were warned of the assault of the British
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Redox potential – CV Acetonitrile Adjusted sensitivity Each ;line represents diff scan rates all been overlayed on one digarm Scan rates ranged from 0 .1 s-1 to 1 Peak due to iodide oxidation is read from +peak to – peak bottom line. Iodide to triiodide Glycol Didn’t work Using equation ip = 2.69 ×105 n3/2 A D1/2 C ν1/2 compare to linear equation y = mx+c y = peak current x = V1/2 c = zero Therefore m is = everything else C = concentration 0.05 M ethylene glycol (acetonitrile
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Macbeth is a play of contradiction and ambition. Driven to becoming King‚ Macbeth will kill all and any that get in his way. He puts his faith in the words and prophesies of three witches‚ after their first one (that he will become Thane of Cawdor) comes through. Macbeth’s wife‚ Lady Macbeth‚ is instrumental is Macbeth’s ambition‚ egging him on when he fears he has gone to far‚ and scheming of greatness. It was written by William Shakespeare between 1603 and 1607. One of the greatest tragedies ever
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2010 The Greatness of Edgar Allan Poe Some people think Edgar Allan Poe is one of the greatest writers in history. Poe mostly wrote in a Gothic theme‚ which makes the story creepy and mysterious. The death of his family members played a big part in the type of writing he did. He became a drinker and gambler‚ which led him down the path of the crazed thoughts that come out in his stories. Edgar Allan Poe has a claim to literary greatness because of his mysterious‚ Gothic writing that has many deeper
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today as the scientific community has evolved to accept unaccustomed theories‚ yet encounters difficulty when relating to the public new <br>and extreme ideas that rebut the system.<br><br>In history‚ the results of individualism has been spread world wide. Important leaders‚ thinkers‚ and philosophers with radical ideas in virgin areas of research were making significant finds rapidly. Yet progress was slowed by short-sighted men who failed to <br>see greatness. <br><br>Aberham Lincoln was a revolutionary
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Who do you blame most for King Duncan’s Death? Who do you blame for king Duncan’s death? Consider the role of Macbeth‚ Lady Macbeth‚ and the Witches. When answering this question you need to consider the roles of Macbeth‚ Lady Macbeth‚ and the Witches. From this we need to also consider when the play was written and in what context the audience saw the characters in the time when the plays were written. Shakespeare was commissioned to write the play by James I of England who was also James
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Water Potential Teacher: What is the formula for water? Student: H‚ I‚ J‚ K‚ L‚ M‚ N‚ O Teacher: That’s not what I taught you. Student: But you said the formula for water was...H to O. Prepared by Lower concentration of solute Water potential – the ability of water move out of the solution through osmosis. Solute molecule Equal concentration of solute Higher concentration of solute H2O Selectively permeable membrane Water molecule Solute molecule with cluster of water molecules Net flow
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