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    Sample Paper 10

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    SUMMATIVE ASSESSMENT –I SCIENCE Class – X Time allowed: 3 hours Maximum Marks: 90 General Instructions: (i) All questions are compulsory. (ii) The question paper comprises of two sections‚ A and B. You are to attempt both the sections. (iii) Questions 1 to 4 in section A are one mark questions. These are to be answered in one word or in one sentence. (iv) Questions 5 to 11 in section A are two marks questions. These are to be answered in about 30 words each. Questions 12 to 23 in section A are three

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    electromagnetic buzzer

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    electric and magnetic fields. Electromagnetism is defined the interaction between a magnetic field and an electric field. People use electromagnetic to transmit electricity to other place‚ to supply electricity form magnetic fields and to store and conserve energy. Electromagnet has components of strong interaction‚ weak interaction and gravitational. According to Hans Christian Ørsted that electricity and magnetism are linked. He proved that an electric current produces a magnetic field as it flows through

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    Tnkbp

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    with Russian natural resources” 3. The nature of alliance is different. For BP‚ because of the increasing demined in developing countries such as china and security problems in Middle East that threats the oil supply‚ it has to look for new oil fields to explore in order to secure the provision of oil in the long term in the future. And for AAR‚ it has resources‚ but it needs the western expertise and capital to exploit its vast energy reserves. So they actually have different purpose. According

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    Induction cooktops heat the pan only.    Photo courtesy of Consumer Guide Products KITCHEN APPLIANCES Microwaves Nonstick Cookware PlanetGreen.com: Are you a green appliance guru? Do you crave the simplicity and rapid heating of electric stoves but long for more responsive temperature control? Perhaps your favorite TV chef has won you over to cooking with gas‚ but the thought of tearing up your kitchen to put in a gas line leaves you cold. Maybe you have a gas stove‚ but wish

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    Magnetic Moulding

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    means of squeezing and jolting the green mould sand. In the second generation the organic binder are used to stabilize the moulding materials. In the third generation or the latest generation the physical means such as gravity‚ vacuum or magnetic field is used for stabilization of the free flowing dry moulding materials. The development of unbounded casting process improves flexibility and enhances mould ability. The concept of unbounded casting is to change the kind of binder or to avoid substantial

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    Electromagnets

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    An electromagnet is a type of magnet in which the magnetic field is produced by electric current. The magnetic field disappears when the current is turned off. Electromagnets are widely used as components of other electrical devices‚ such as motors‚ generators‚ relays‚ loudspeakers‚ hard disks‚ MRI machines‚ scientific instruments‚ and magnetic separation equipment‚ as well as being employed as industrial lifting electromagnets for picking up and moving heavy iron objects like scrap iron. A simple

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    gayss theory

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    Green’s theorem reinterpreted We begin with the situation obtained in Section 12C for a region R in R2 . With the positive orientation for bdR‚ we have ∂f dxdy = ∂x R f dy‚ bdR ∂g dxdy = − ∂y R gdx. bdR We now consider a vector field F = (F1 ‚ F2 ) on R‚ and we obtain from Green’s theorem ∂F1 ∂F2 + ∂x ∂y R dxdy = F1 dy − F2 dx. bdR (Notice if we were thinking in terms of Stokes’ theorem‚ we would put the minus sign on the left side instead of the right.) We now

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    Technology in the Security Field 7/23/2012 SEC/360 Technology in the Security Field Security and safety is the most important aspects in a security setting. The techniques that officers use to ensure security and safety are enhancing through the advancements in technology. Changes have been significant from the time before computers and the current status of high-tech computers and other technology. The changes have brought both positive and negative effects

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    key to developing a career in that field. Proper training is required once you realise you want to develop your talent in a particular sport. Apart from facilities‚ it is crucial to find a good coach at the right age. Once you are on the right track‚ no one can stop you from turning professional and making a career in this field. This industry has many other opportunities and one can be part of the sports brigade by choosing to work in a sports related field. Opportunities that can be found within

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    Hemispheric disconnection and unity in conscious awareness - Sperry 1968. Evaluation In 1968 the neuropsychologist conducted a study into split brain patients while working at the California Institute of Technology. Previously he had carried out research similar to this‚ in the1950s‚ splitting the brains of cats and monkeys. It was during this research that he realise3d that you could teach one of the hemispheres a task‚ while keeping the other hemisphere unaware of the information learned. This

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