Romar M. Cabinta EXERCISES 15 WORK‚ ENERGY‚ AND POWER A. CONCEPTUAL QUESTIONS 1. Is work done when you move a book from the top of the desk to the floor? Why? Yes. It is because the displacement of the book from the top of the desk to the floor and the force that is applied to the book is parallel with one another. 2. State the law of Conservation of Mechanical Energy in two ways? The law of conservation of energy states that energy may neither be created nor destroyed.
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Cayla Wierenga Ms. Pintek Health 9 April 2013 Muscle Growth DR. PAUL D. THOMPSON‚ a 60 year old marathon runner and chief of cardiology at Hartford Hospital‚ stood in front of a medical audience recently and began his talk with a story about himself. Hes had been lifting weights since he was 12 years old. Dr. Thompson is now a small and wiry with not a bulging muscle on him. He was speculated that he must have a genetic inability to build muscles‚ no matter how hard he works at it. But
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WHAT IS TORQUE? Torque is a measure of how much a force acting on an object causes that object to rotate. The object rotates about an axis‚ which we will call the pivot point‚ and will label ’O ’. We will call the force ’F ’. The distance from the pivot point to the point where the force acts is called the moment arm‚ and is denoted by ’r ’. Note that this distance‚ ’r ’‚ is also a vector‚ and points from the axis of rotation to the point where the force acts. (Refer to Figure 1 for a pictoral
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Informative Speech April 24‚ 2011 Energy Efficiency There are various sources of energy available for use. However‚ energy is a limited and sparse resource that is not in abundance at all places. There is an ever rising need for more energy‚ but the energy supply and resources are limited. As a result‚ people have to develop means that can enable them to survive with the small amount of energy that is available. The proper and sustainable use of energy is known as energy efficiency. Efficiency is attained
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[Lab 5: Conservation of Energy] [Yuyu Bao] Lab Partners: [Suyu Chao] TA: Jack Rory Staunton Section: [THU 4:25 PSH-366] ABSTRACT This lab I calibrated experiment equipment‚ did experiment steps (most do not include the computer steps) and assist partners in order to use computer software better. The experimental principle is the total energy of the kinetic and potential energy‚ elastic potential energy of the spring on the swing
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SOLAR ENERGY Our environment is in a fatal state any move could cost us the world. We need to work with the environment and not against it‚ we need to use what it is giving us every day and not every million year‚ once it is gone it is gone. Instead of using fossil fuels and having them burn to waste use solar energy and use what the sun gives us every day. Solar energy is an effective alternative source because there is very little pollution‚ they cut down on fossil fuels and are cost effective
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Political Promotion of Renewable Energy in the United States and Germany http://www.e- ir.info/2012/11/09/political- promotion- of- renewable- energy- in- the- united- states- and- germany/ March 9‚ 2013 By Jakob Hauter on November 9‚ 2012 The Polit ical Promot ion of Renewable Energy in t he Unit ed St at es and Germany: Mot ives and Consequences At a time when popular uprisings against oppressive regimes in North Africa let oil prices soar and stir a debate in developed nations about the
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Chapter 16: Energy Management and Audit in Best Exports 16.1 What Is Energy? Energy is the ability to do work and work is the transfer of energy from one form to another. In practical terms‚ energy is what we use to manipulate the world around us‚ whether by exciting our muscles‚ by using electricity‚ or by using mechanical devices such as automobiles. Energy comes in different forms - heat (thermal)‚ light (radiant)‚ mechanical‚ electrical‚ chemical‚ and nuclear energy. 16.2 Definition
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Introduction Energy conservation is very important in to not only the community but also the world. By conserving energy you will not only be helping your bottom line by reducing you energy bills but you will also be helping the world ’s environment. An average savings of up to forty percent can be achieved though a properly implemented energy conservation plan Renewable vs. Nonrenewable Resources Renewable energy sources are sources that are self-sustaining. Nonrenewable energy sources are commonly
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Energy Management and Audit Report 1) Introduction For over the past few years‚ the planet Earth is being damaged by human activities. Buildings play a major role in that. They contribute to approximately 40% of the greenhouse gas emissions globally. Over the past 30 years‚ 10% of the ice burgs have been melted due to the rising temperature of Earth. The rise in temperature is caused by greenhouse gas. Therefore‚ green building is important today. Green building has both positive and negative
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