Mechanics: Work‚ Energy‚ Momentum‚ Kinematics of Rotational Motion Jacque Lynn F Gabayno‚ Ph.D. Lecture Notes 1 Work as defined in Physics r r W =F s Force× Displacement = Force × Displacement *SI Units: 1 N.m = 1 Joules (i.e. same as the unit of energy) 2 Recall “Dot Product” The dot product allows us to multiply two vectors to get something that is SCALAR. r A r A For a constant force: r r r B = A B cos ! r B = Ax Bx + Ay By + Az Bz Only those along the direction of
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Energy is an important part of our life‚ and no human being in the 21st century can live without it‚ energy now a day means electricity and electricity is running our world‚ with no energy there will be no electricity and then no hospitals‚ no technology and we will go back to stone ages. Energy sources on planet earth can be classified into two types‚ “renewable” and “nonrenewable” energy sources‚ they both differ in many aspects‚ both of them have advantages and disadvantages‚ and both of them
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consumption of energy sources that are used to get us through our everyday lives! Our most common methods of generating energy are polluting our beloved planet Earth and tearing up the ozone layer. Also‚ many of these methods we are currently abusing to generate energy are non-renewable. Thats means we could run out any day now. This is a formula for complete disaster‚ but don’t be scared. Like most things we can fix this situation we have put ourselves into with alternative energy sources. Sorry
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Write an essay on environmental pollution Outline: 1. Introduction 2. Causes i. Industrial waste ii. Smoke iii. Noise iv. Deforestation v. spraying of pesticides and insecticides vi. Shortage of filth depots 3. Effects i. Mental tension ii. Respiratory diseases iii. Irritation iv. Deafness v. heart diseases 4. Remedies i. Forestation ii. Anti pollution devices iii. Regular check up of vehicles iv. New laws v. public awareness through media Pollution
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0166370 Global Energy: Sustainability and Moving Towards a Low-Carbon Future ENVM 652 Fall 2011 Garmeh Brown Elizabeth Jenny Hermione Toussaint TABLE OF CONTENTS EXECUTIVE SUMMARY……………………………………………………………………………3 1.0 INTRODUCTION…………………………………………………………………………………4 2.0 WHAT ROLE DOES CARBON PLAY IN GLOBAL WARMING...........................................5 2.1 CARBON CYCLE …………………..............................................................................................6 3.0 EFFORTS
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You Do Work You Give it Energy! Holly Beech Professor Evans SCI 110 Holly Beech Professor Evans SCI 110 31 January 2010 Whenever You Do Work You Give It Energy How would one know that working creates energy? Well the definition of energy might give a clue. “Energy can be defined as the ability to do work” (Tillery‚ Enger‚ and Ross‚ 2008‚ p. 59). If one were to think about this statement unscientifically‚ it might evoke the picture of some one being to tired‚ having no energy‚ or being
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Experiment 6: Work‚ Power and Energy Laboratory Report Eljine Jayson Zhang‚ Shaira Madelene Vinta‚ Mel Marvin Villarante‚ Pauline Alyssa Vega‚ Camille Elijah Valdez‚ Nicole Dominique Vasquez Department of Physical Therapy College of Rehabilitation Sciences‚ University of Santo Tomas España‚ Manila Philippines Abstract This report aims to show how to determine the power output of going up a staircase and going down the same staircase‚ to determine the change in kinetic and potential
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Analysis at Work Renewable and Non-renewable energy sources &Fuels: Renewable energy comes from natural sources that are constantly and sustainably replenished. The most common renewable energy sources are biomass‚ hydroelectric‚ geothermal‚ wind power and solar power. Sunlight is the source of most renewable energy power; the sun can be used to produce solar energy which is electricity for heating‚ cooling‚ lighting homes and transportation. [1] Non-renewable energy is energy that comes from
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learned especially on the Planetarium because they have showed their about stars‚ galaxies and constellations in the universe. In the voyager there are five [5] stations that you are going to explore. The Planetarium‚ film showing‚ Photo exhibit‚ Solar Viewing‚ and Star Gazing. These are the activity that composes the Voyager. This to enhance the learning of the students in our school. The access and completion of our schooling is sufficient for us to use this as an armor of knowledge when facing
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Alternate Energy What would it be like to live in the dark? Finding new forms of alternative energy has been a major concern throughout the world for the past several years. Currently‚ our main sources of energy are coal for electricity‚ and oil for transportation. Alternative energy‚ also known as renewable energy‚ is defined as energy derived from sources that do not use up natural resources or harm the environment. At the rate we are using these nonrenewable resources oil is scheduled to run
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