Motors and Generators

Jun 17th, 2015
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• Perform a first hand investigation to demonstrate the motor effect Aim: To demonstrate that a current carrying wire experiences a force in a magnetic field and identify factors that affect this force. Method: 1. Set up two retort stands. Suspend a coil of wire between them and attach ends of wire to a supply of 12V to complete circuit.

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1. Our Sun is just one star in the galaxy and ours is just one galaxy in the Universe.Outline the historical development of models of the Universe from the time of Aristotle to the time of Newton.NEED TO FOCUS ON ONE ASTRONOMER AND DESCRIBE HIS MODEL SPECIFICALLYAristotle: He believed that the Earth was at the centre of the universe and that the Sun, the Moon and the visible planets, as well as a celestial sphere containing all the stars, revolved around the Earth. However, he had no technology with which to examine the heavens, other than his naked eye. This was known as the geocentric model.Aristarchus: He disagreed with Aristotle and put forward an alternative view. He suggested that the Sun is much bigger than the Earth which therefore positions it at the centre of the universe in which the Earth orbits it. Also, he explained that Earth rotates on an axis once per day, produ

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