Grade-12-Physical-Science-March-2011-Paper-1 MARKS: 150 TIME: 3 hours This question paper consists of 16 pages and 3 data sheets. |INSTRUCTIONS AND INFORMATION | | | |1. |Write your centre number and examination number in the appropriate spaces on the ANSWER
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feels the way he feels about man using the excuse of his “pursuit of happiness” to justify his misdoings. I agree with his idea that our sexual impulses have been put in a position of “preposterous privilege” because it condones all behavior because it was done in man’s interest of happiness. In reality what Mr.A did is immoral and many of our strongest impulses must be squashed in the interest of the greater good. Many of our desires‚ specifically sexual‚ tend to be selfish and if acted upon come at
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occurs only if the myelin sheath is continuous. b. occurs only if nodes of Ranvier are lacking. c. is faster than conduction on an unmyelinated fiber. d. is slower than conduction on an unmyelinated fiber. Answer: C 5. The most rapid nerve impulses are conducted on fibers that are a. thick and myelinated. b. thick and unmyelinated. c. thin and myelinated. d. thin and unmyelinated. Answer: A 6. The nervous system a. detects changes in the internal or external environment. b. controls
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his shot much less effective‚ as he would not have the same momentum alongside the ideal distance between his hand releasing the ball‚ and the hoop. This is because the higher you are when you let go of the ball; the distance becomes shorter in between the ball and the hoop. Next off‚ Ray Allen incorporates the use of his knee’s in the midst of his jump shot. The only reason this is a requirement in his form‚ is so that he has momentum right before he is jumping. If he decided not to use any assistance
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1 Molecular-Orbital Theory Introduction Orbitals in molecules are not necessarily localized on atoms or between atoms as suggested in the valence bond theory. Molecular orbitals can also be formed the LCAO where more than two atomic orbitals are used. (Technically‚ we can use all of the atomic orbitals in the LCAO.) Linear combinations of orbitals result in the interference of waves. Both constructive and destructive interference may result. Within a diatomic molecule‚ N atomic orbitals
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reasonable human being‚ after carefully considering a situation‚ he might find something beneficial in not acting according to his initial impulse. He might decide to change his first choice because he has a new motivation‚ a new idea‚ which modifies the brain to reconsider the initial choice. And the brain gives him a new impulse by which the action of the former impulse is suspended. Let me clarify my stance with an example. Suppose a man
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Econometrics of Financial Markets. Chan‚ L. K.‚ Jegadeesh‚ N.‚ & Lakonishok‚ J. (1996). "Momentum Strategies". Journal of Finance‚ 1681-1713. Chelley-Steely‚ P.‚ & Siganos‚ A. (2008). "Momentum Profits in Alternative Market Structures". Working Paper. Fama‚ E. (1970). "Efficient Capital Markets: a Review of Theory and Empirical Work". Journal of Finance‚ 383-417. Griffin‚ J.‚ Ji‚ X.‚ & Martin‚ J. (2003). "Global Momentum Strategies: A Portfolio Perspective". Working Paper. Latif‚ M.‚ Arshad‚ S.‚ Fatima
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sprout from the cell and the axon is one long extension of the cell. The dendrites receive signals from other neurons‚ while the axon sends impulses to other neurons. Axons can extend to more than a meter long. Average sized neurons have hundreds of dendrites; therefore it can receive thousands of signals simultaneously from other neurons. The neuron sends impulses by connection the axon to the dendrites of another nerve cell. The synapse is a gap between the axon and the adjacent neuron‚ which is where
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alcoholic will often simply deny they have a drinking problem‚ pointing to how well they function in their job and relationships. 2. Regression Regression is the reversion to an earlier stage of development in the face of unacceptable thoughts or impulses. For an example an adolescent who is overwhelmed with
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of the conservation of angular momentum. When a person enters the spin with extended arms‚ the overall energy of their body has to move their hands and arms in large circles. As they pull their arms in‚ there is just as much energy as there was before. To conserve energy‚ the whole body moves faster. In the conservation of momentum‚ electron spin as well‚ and if they do it in pairs‚ they generally cancel out. Unpaired electrons determine the ‘value’ of angular momentum for any given molecule. When
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