endorsed by University of Cambridge International Examinations Physics for Cambridge IGCSE Complete seCond edition Teacher’s Resource Kit Ian Collins 2 PRACTICAL Name: 2.2 Acceleration due to gravity using a ticker tape timer Aim: To determine a value for the acceleration due to gravity‚ g. Equipment: n ticker tape timer n ticker tape n pulley mass n string n adhesive tape n 30 cm rule n scissors n glue n Introduction As an object falls freely it will accelerate towards the centre
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There is no doubt that in the development and recognition of time‚ there have been many theories and periods that have defined the understanding of how it works and what is the driving force behind it. These factors have included the cosmological ideas of religions that have become the staples of cultures across the globe. They have also included Astrological factors such as the physical presence of ‚ but in more recent understandings science‚ physics‚ and the calculations of mathematics have lead
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way of transferring power wirelessly. Wireless Power Transmission (WPT) is the efficient transmission of electric power from one point to another trough vacuum or an atmosphere without the use of wire or any other substance. This can be used for applications where either an instantaneous amount or a continuous delivery of energy is needed‚ but where conventional wires are unaffordable‚ inconvenient‚ expensive‚ hazardous‚ unwanted or impossible. The power can be transmitted using Inductive coupling
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Aristotle attributed the first of what could be called a scientific discussion on magnetism to Thales of Miletus‚ who lived from about 625 BC to about 545 BC.[1] Around the same time‚ in ancient India‚ the Indian surgeon‚ Sushruta‚ was the first to make use of the magnet for surgical purposes.[2] There is some evidence that the first use of magnetic materials for its properties predates this‚ J. B. Carlson suggests that the Olmec might have used hematite as a magnet earlier than 1000BC[3] [4] In
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EE1 Laboratory Report: Operational Amplifier Applications Introduction Operational amplifiers (“op-amp”) are high gain electronic voltage amplifiers‚ which are the significant building blocks for most electronic circuits. In addition to this‚ they are still the most widely used microelectronic devices nowadays‚ being used in vast applications for industrial and individual users. The aim of this experiment is to demonstrate how the operational amplifier operates and show its imperfections via
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Michael Faraday was the third son of a London blacksmith. He became a self- taught scientist whose greatest discoveries concerned electricity. In 1831‚ Faraday proved that magnets can be used to produce an electric current. This discovery enabled him to build an electric generator. It was a forerunner of the giant dynamos that keep the modern world supplied with power. Faraday was born on September 22‚ 1791‚ in Newington‚ England. When he was five‚ his family moved to London
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and the electric bulb‚ and invented the Tesla coil. 8. Max Planck is known as the father of quantum mechanics‚ and showed how the energy of a photon is proportional to its frequency. 9. James Maxwell developed equations for electromagnetism and the kinetic theory of gases‚ and predicted that there were types of radiation beyond visible light. 10. Marie Curie discovered radioactivity and isolated plutonium and
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patterns and signals of the nervous system. * Michael Faraday Born 22 September 1791 Newington Butts‚ England Died 25 August 1867 (aged 75) Hampton Court‚ Middlesex‚ England Faraday was an English scientistwho contributed to the fields of electromagnetism and electrochemistry. His main discoveries include those of electromagnetic induction‚ diamagnetism and electrolysis. * Thomas Alva Edison Born February 11‚ 1847 Milan‚ Ohio‚ U.S. Died October 18‚ 1931 (aged 84) West Orange‚ New Jersey
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force‚ the weak nuclear force‚ is responsible for certain types of nuclear reactions and has little bearing on energy sources today. Table 7 shows the four forces‚ the property on which each acts‚ and examples of each force. Gravitation and electromagnetism are the two forces with which we will be primarily concerned‚ as these are the two forces that operate at the macroscopic level of environmental systems. These also currently form the basis of our most prevalent sources for energy technologies
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magnetism and even light are all manifestations of the same phenomenon: the electromagnetic field. From that moment on‚ all other classic laws or equations of these disciplines became simplified cases of Maxwell’s equations. Maxwell’s work in electromagnetism has been called the "second great unification in physics"‚[2] after the first one carried out by Isaac Newton. Maxwell demonstrated that electric and magnetic fields travel through space in the form of waves‚ and at the constant speed of light
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