cross section with a radius of 1.25 mm. (a) If the wire carries a current of 3.70 A‚ find the drift speed of the electrons in this wire. 3. An aluminum wire having a cross-sectional area equal to 4.00 10–6 m2 carries a current of 5.00 A. The density of aluminum is 2.70 g/cm3. Assume each aluminum atom supplies one conduction electron per atom. Find the drift speed of the electrons in the wire. 12. A lightbulb has a resistance of 240 when operating with a potential difference of 120 V across
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Give the term to the following definition 1. Carrier – company that transports or conveys goods – экспедиционная компания 2. freight forwarder - person or business that arranges documentation and travel facilities for companies dispatching goods to customers – транспортная компания 3. Supplier - company which supplies parts or services to another company; also called vendor 4. haulage contractor/haulier - company which carries goods by road 5. courier - company
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Individual Assignment J.J. Thomson – Discovery of the electron Table of Contents Introduction 2 Biographical information 3 Background information 4 Experimental information 5 Impact 6 Conclusion 7 J.J. Thomson – Discovery of the electron Introduction The discovery of the electron is affirmative and justly credited to the English physicist Sir Joseph John Thomson (Weinberg‚ 2003). He had found and identified the electron in Cavendish Laboratory‚ Cambridge in 1897. From many
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------------------------------------------------- Transport in India From Wikipedia‚ the free encyclopedia The Mumbai-Pune Expressway‚ India ’s first expressway The Bandra Worli Sea link‚ with Worli skyline Transport in the Republic of India is an important part of the nation ’s economy. Since the economic liberalisation of the 1990s‚ development of infrastructure within the country has progressed at a rapid pace‚ and today there is a wide variety of modes of transport by land‚ water and air. However‚ India
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Structure of Travel and Tourism Assessment 2: Part A: How the Hospitality and Transport sectors have been developed historically? * Hospitality: The historical development of hospitality has been developed for more than2000 years. There are normally 3 different types of hospitality‚ which are: i) hostels ii) motel and iii) hotel. There is also self-camping facility for people staying and living in the campsites. The first early travelers were either warriors or traders or people who
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2. MULTIMODAL TRANSPORT a. Meaning b. Advantages of multimodal transport c. Difference between Multi-Modal Transport Contract & Other Contract 2. LAWS RELATING TO MULTI MODAL TRANSPORT International level
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The different electron energy levels caused in hydrogen cause these lines in the spectrum to be produced in this way because the wavelengths that are released when the electron move back to the ground state is specific and it varies accordingly. 2. Into which energy level are electrons dropping into to make these visible lines? The electrons are dropping back to the ground state which is the bottom most energy level to makes these visible lines. 3. What happens when the electrons drop into the
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Sir J.J.THOMSOM is to physics what electron is to an atom. He charged the world of physics with his discoveries and gave momentum to atomic physics. Physics is what today because of this British scientist who is regarded as the greatest experimental physicists of this century. A bookseller’s son‚ Thomsom studied at the Owens College and later at the Manchester University. He wanted to become an engineer‚ but his father’s death in 1872 forced him to study Mathematics‚ Physics and Chemistry as he
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Introductory Chemistry‚ 2e (Tro) Chapter 9 – Electrons in Atoms and the Periodic Table True/False Questions 1) When the elements are arranged in order of increasing number of protons‚ certain sets of properties recur periodically. 5) A particle of light is called a packet. 9) Ultraviolet light produces suntans and sunburns. 13) Electrons behave like particles and we can describe their exact paths. 17) The ground state is when an electron in an atom is excited into the lowest possible vacant orbital
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FREE ELECTRON THEORY Classical free electron theory of metals This theory was developed by Drude and Lorentz and hence is also known as Drude-Lorentz theory. According to this theory‚ a metal consists of electrons which are free to move about in the crystal like molecules of a gas in a container. Mutual repulsion between electrons is ignored and hence potential energy is taken as zero. Therefore the total energy of the electron is equal to its kinetic energy. Drift velocity If no electric
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