Holiday’s homework Class IX 1. Is potential energy a vector or a scalar quantity? 2. A train travels at a speed of 60 km/hr for 0.52hr‚ at 30 km/h for the next 0.24hr and then at 70 km/h for the next 0.71h.What is the average speed of the train? 3. Plot the distance – time graphs a) When the body is at rest b) When the body is moving with a uniform speed c) When the body is moving with a non-uniform speed. 4. The brakes applied to a car produced an acceleration of 6 ms-2 in
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A Walk to Remember (novel) From Wikipedia‚ the free encyclopedia A Walk to Remember The cover of the first hardback edition of the novel Author(s) Nicholas Sparks Country United States Language English Genre(s) Drama Romance Publisher Warner Books Publication date October 1999 Media type Print (hardcover‚ paperback) Pages 240 ISBN 0-446-60895-5 OCLC Number 44913996 A Walk to Remember is a novel by American writer Nicholas Sparks‚ released in October 1999. The novel‚ set in 1958-
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Society has become increasingly dependent on electricity over the last 200 years Random Keywords: Independent Variable: variable that is changed Dependent Variable: thing that changes with independent variable‚ it is what you measure Control Variables: variable held constant for reference Validity or valid: the extent to which a measurement accurately reflects the concept‚ which is intended to measure Accuracy: how close your measurement or results are to the true value Reliability:
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SUGGESTED INVESTIGATORY PROJECTS CLASS XII 1 To study various factors on which the internal resistance/emf of a cell depends. 2. To study the variations‚ in current flowing‚ in a circuit containing a LDR‚ because of a variation. (a) in the power of the incandescent lamp‚ used to ‘illuminate’ the LDR. (Keeping all the lamps at a fixed distance). (b) in the distance of a incandescent lamp‚ (of fixed power)‚ used to ‘illuminate’ the LDR. 3. To find the refractive indices of (a) water (b) oil
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Conservative force - Any force which conserves mechanical energy‚ as opposed to a nonconservative force. See statement of conservation of mechanical energy. Conservative System - A system in which energy is conserved. Energy - The ability to do work. Kinetic Energy - The energy of motion. Nonconservative Force - Any force which does not conserve mechanical energy‚ as opposed to a conservative force. Path independence - Property of conservative forces which states that the work done
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P1a 1.1 Thermal Radiation * Thermal or heat radiation is the transfer of energy by infra-red waves. * Thermal radiation is energy transfer by electromagnetic waves. * All objects emit thermal radiation. * The hotter an object‚ the more thermal radiation it emits. * Heat radiation can travel through a vacuum. 1.2 Surfaces and Radiation * Dark‚ matt surfaces are better emitters of thermal radiation than light‚ shiny surfaces. * Dark‚ matt surfaces
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On January 23rd 1973 a new volcano unexpectedly erupted in the Vestmannaeyjar archipelago‚ southwest of Iceland. The new volcano was a fissure 1.25 miles long and only 1100 yards from the center of town‚ also named Vestmannaeyjar. The new volcano was named Heimaey. The town was mostly evacuated over the next few days and the lava slowly flowed towards town and the mouth of the harbor for the next seven months. Vestmannaeyjar is the only good harbour in that part of Iceland‚ and was the base for a
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WWW.MIAMI-BEST-MATH-TUTOR.COM E-MAIL: MIAMIMATHTUTOR@GMAIL.COM CONTACT NUMBER: (786)556-4839 More on Work and the Work-Energy Theorem Practice Problems 1. A 0.600-kg particle has a speed of 2.00 m/s at point A and kinetic energy of 7.50 J at point B. What is its speed at B? the total work done on the particle as it moves from A to B? kinetic energy at A? its WWW.MIAMI-BEST-MATH-TUTOR.COM PHYSICS.I.MORE.ON.WORK.ENERGY.7.2.PRACTICE.PROBLEMS PAGE 1 OF 8 2. A 0.300-kg ball has a speed of 15.0
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Topic #5(. Forces 1. Forces 2. Newton’s First Law of Motion 3. Newton’s Second Law of Motion 4. Units of Force 5. Mass and Weight 6. Two Ways to Measure Mass 7. Friction 8. Net Force and Acceleration 9. Free Fall 10. Newton’s Third Law of Motion *11. Forces on Inclined Planes Notes should include: Defn: Dynamics is defined as the study of the effects of forces on matter. Forces: Often a force is described as a push or a pull. Forces are often categorized according
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Electricity has become the main sources of domestic energy in Australia over the last 200 years and played an important role in today’s society‚ industry . In the early time when the British started to settle in Australia‚ firewood was the most important fuel. In 1831‚ Michael Faraday put forward the electromagnetic induction‚ which led to the development of electric generators and made the large amount of electricity supply become possible. After 1879 when the perfect light globe was designed
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