11.1 Distance and Displacement Choosing a Frame of Reference The motion of an object looks different to observers in different frames of reference. EX: A passenger in the rear seat of a car moving at a steady speed is at rest relative to the front seat of the car. But is not at rest relative to: the side of the road‚ a pedestrian on the corner ahead‚ or even the rotating wheels of the car. EX: Examine the figure. If you were standing under the tree‚ which object would appear to be moving
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Chapter 5 REVIEW QUESTIONS 1. How did the described volcanoes in Iceland and the Philippines change the environment to lesser or greater extents? 2. Name and describe the attributes of the two categories into which all organisms can be divided based on how they obtain nutrition. All organisms can be divided into autothrops‚ which produce their own food‚ and heterothrops‚ which need to get their food from somewhere else. 3. Name and describe the roles of the three main trophic categories that make
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principle is valid for most compressible and incompressible fluids at low Mach numbers (less than 0.3). For this principle‚ fluid particles are only subject to pressure and its own weight. The principle of conservation of energy comes handy in deriving the Bernoulli’s principle. This law of conservation of energy holds that as long as a system is isolated from external factors/interference‚ the total amount of energy inside the system remains constant despite the energy transformation that also takes
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HSC Physics Space 1. The Earth has a gravitational field that exerts a force on objects both on it and around it Define weight as the force on an object due to a gravitational field Mass is a measure of the amount of matter in an object‚ it is measured in kilograms (kg). The weight of an object is a measure of the force with which it is attracted by a gravitational force‚ it is measured in Newtons (N). It is directly related to the strength of the gravitational field at a point where the object
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An impulse is something that changes an objects momentum‚ and is the product of force and the time which that force acts. Impulse is expressed in the equation Impulse=Ft‚ where F is the force and t is the time on which that force is applied. Impulse is essentially the change in momentum of an object. If we a car with a mass of 1500kgs was driving at a velocity of 20ms-1‚ its momentum would be 30‚000kgms-1. If we assume that this vehicle crashed into a solid concrete
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clearly‚ write down the correct formula and show their substitution to an incorrect calculation (answer)‚ partial marks are awarded for correct substitution and consistent working. Many candidates have poor understanding of the units especially in momentum‚ torque and magnetism. Mathematical errors‚ especially those dealing with algebraic fractions and powers of 10 were quite common. e.g. ɑ + ɑ/2 eg. 1029 2. Finally‚ I wish to call upon the teachers to encourage and
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Chapter 8. Phase Change Simulations This chapter describes the phase change model available in FLUENT and the commands you use to set up a phase change problem. Information is organized into the following sections: Section 8.1 : Section 8.2 : Section 8.3 : Section 8.4 : Overview of Phase Change Modeling Phase Change Modeling Theory User Inputs for the Phase Change Model Solution Strategies for Phase Change Problems 8.1 Overview of Phase Change Modeling in FLUENT FLUENT can be used to solve uid
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The ocean is one of the most biggest and exclusive gift to the mankind. It has been responsible to a quantum harmonizing of the ecosystem. Without ocean‚ the carbon dioxide would have clouded and generate a serious threat to the nearest sheet of atmosphere covering the planet. For humans and animals‚ it provides the needed unbeatable agent of our existence‚ oxygen. Foods in different forms have been stored in this giant earth occupier and life has been sustained in general through the ocean. It is
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giving children the opportunity t to go to school‚ organized labor unions were formed supporting goals of eight-hour work days‚ improved safety and health conditions‚ workers’ compensation laws and minimum wages for women. The movement picked up momentum and was joined by church leaders seeking social purity by pushing
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STPM/S(E)960 PEPERIKSAAN SIJIL TINGGI PERSEKOLAHAN MALAYSIA (MALAYSIA HIGHER SCHOOL CERTIFICATE) PHYSICS Syllabus Second Edition This syllabus applies for the 1999 examination and thereafter until further notice. However the form of examination for Physics stated in this booklet was first implemented in the 2001 examination as announced through a circular‚ Pemberitahuan MPM/2(AM)/2000. Teachers/candidates are to advised to contact Majlis Peperiksaan Malaysia for the latest information about the
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