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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Most electromagnets consist of wire wound around an iron core. This core is made from soft iron that loses its magnetism quickly when the electric current stops flowing through the wire. Electromagnetism is the branch of physics that studies the relationship between electricity and magnetism. Electromagnetism is based on the fact that (1) an electric current or a charging electric field produces a magnetic field or (2) a charging magnetic field produces an electric field. In 1820‚ the Danish
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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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NOTE: This paper explains the theory and uses of the electric generator‚ and explains the differences between AC and DC generators. It also includes a glossary and a bibliography. --------------------------------------------------- ELECTRIC GENERATORS In its most basic definition‚ an electric generator is a machine that produces electricity. Generators produce almost all of the electricity used by people. They supply the electric power that runs machines in factories‚ provide lighting‚ and operate
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ADAY‚ MARK JAYSON DL. CEIT-02-301A FUNDAMENTAL FORCES OF NATURE There are four fundamental forces of nature that have been identified the universe‚ namely‚ Weak Force‚ Strong Force‚ Electromagnetic Force and Gravitational Force. They are found to have rather different properties and play central roles in making the universe what it is today. Weak
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10.2 Properties of Cathode rays Aim: to determine some of the properties of the rays which come from the cathode of a discharge tube. Equipment * Two power packs * Two plug-plug leads * One pair of magnets * Induction coil * Four plug-clip leads * Discharge tubes (Maltese cross‚ electric plates‚ rotating wheel‚ screen display) Theory: This experiment is designed to show you the properties of cathode rays as discovered by Sir William Crookes. Method: 1. Connect the
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Unit 3 Lesson 5 Electromagnetism Assessment Template 1. Explain what it means when we say a substance is magnetic. (HINT: Be sure to mention the role of the Electrons) If a substance is magnetic‚ we are actually saying that it is able to be acted upon by a magnetic field. When electricity flows through a circuit‚ it creates a magnetic field.When a magnet cuts across a circuit‚ a voltage is produced. 2. Discuss the relationship between electric and magnetic fields. (HINT: Be sure to discuss what
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energy to mechanical energy.A number of such loops form a coil and the coil is termed solenoid. If there is a soft iron core in the solenoid‚ it behaves like a magnet as long as there is current through the coil. Thus it is an electromagnet | Electromagnetism created a revolution by leading to the devices called motors which convert electrical energy to mechanical energy. Experiments by scientists like Oersted and Faraday made a long leap by converting mechanical energy to
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-Faraday- his major contributions were in the fields of electromagnetism and electrochemistry. He explained the basis of magnetic field through his studies on the effects of magnetic field around a conductor which carried Direct Current (DC). In 1831‚ Faraday made one of his most renowned discoveries‚ the principle of electromagnetic induction by using the "induction ring". The electricity was generated by means of electromagnetic effect. This was the first version of an electric transformer. He
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DESCRIPTION Course code: PHYSICS-101 Credit Hours: Three(3) Semester: 1st Class: Geop & Geol Teacher Name: Muhammad Aamer Prerequisites: None COURSE OBJECTIVE The objective of this course is to provide information about the Physics i.e. electromagnetism‚ thermodynamics‚ gravitation. Concepts made clear through animations and through the study of reference books. COURSE OUTCOMES At the end of this course students become able to implements the physics in different fields of life like engineering
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