Work & Energy Physical Science Ms.Barconey May 8‚ 2013 Work is the transfer of energy to an object by the application of a force that causes the object to move in the direction of the force. Three examples of work would be a tractor pulling a float‚ a mother pushing a baby stroller‚ and a body builder lift a barbell over their head. Work is measured in joules and the formula for work is Work=Force*Distance. Power is a quantity that measures the rate at which work is done
Premium Potential energy Energy Force
Biomass Energy Introduction Biomass is biological material derived from living‚ or recently living organisms. It mostly often refers to plants or plant-derived materials which are specifically called lignocellulosic biomass. As a renewable energy source‚ biomass can either be used directly via combustion to produce heat‚ or indirectly after converting it to various forms of biofuel. The source of biomass energy. Wood energy. is the largest
Free Fossil fuel Carbon dioxide Ethanol fuel
WORD COUNT: 6664 ENERGY SECURITY: CHALLENGES AND PROSPECTS IN BOTSWANA INTRODUCTION 1. Security is an important factor in life on a daily basis‚people require one form of security in a particular way or the other. There are issues of crime‚ terrorism‚ poverty‚ displacement‚ health‚ education and many others which a nation has to ensure that its citizens are satisfied with. Any longer interruption of a steady and plenty flow of energy‚ particularly modern energy would massively harm a
Premium Petroleum Energy development Natural gas
examples of work done=force x distance What is work? Work in physics is the transfer of energy; work is done on an object when an applied force moves it through a distance. The link between work and energy is work done equals energy transferred. The units for the two are also the same (joules). E.g. 500J of work = 500J of kinetic energy. Work is calculated with the formula: work done=force x distance moved For example‚ if a force of 10 newton (F = 10 N) acts along point that travels 2 meters
Premium Potential energy Energy Mass
Energy Nothing can live without energy. People‚ animals and plants need energy to live and machines need energy to work. Today‚ most of the energy we use still comes from fossil fuels like coal‚ oil and gas‚ which have been formed underground over millions of years. We called these non-renewable forms of energy because they can only be used once. Because of this‚ we need to reduce our use of non-renewable fuel and use more renewable forms of energy like that from the sun‚ wind or geothermal
Premium Renewable energy Solar energy Coal
Renewable energy is energy from natural resources such as sunlight‚ wind‚ rain‚ tides‚ and geothermal heat‚ these resources are naturally replenished. Renewable energy does not harm the environment or deplete any of our natural resources like fossil fuel. Renewable energy is not subject to sharp price changes because it comes from natural resources. Biomass is currently the largest U.S. renewable energy source with more than two hundred existing bio power plants providing energy for one point five
Free Fossil fuel Wind power Renewable energy
Energy Outline A. Benefits Of Solar Energy • Does not release green house gases • Production of solar energy does not produce smoke‚ gas‚ or any other chemical byproducts • Solar energy contributes to about 4 percent of the world’s electricity • Italy’s Montalto di Castro solar park: o good example of how solar contributes to the decrease in emissions o Decreases the carbon emissions by about 20‚000 tons per year compared to fossil fuel energy production. • Money! o Except for the initial
Premium Sun Electricity Fossil fuel
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
Premium Efficient energy use Photovoltaics Renewable energy
Wind Energy Wind energy is a free‚ renewable resource‚ so no matter how much is used today‚ there will still be the same supply in the future. Because the wind energy is also the source of the clean‚ and non- polluting‚ electricity. Wind energy is friendly to the surrounding environment‚ as no fossil fuels were to generate electricity from wind energy. Wind Energy is a viable industry that has become energy source. The energy generated from wind is clean and efficient. The wind energy industry
Premium Wind power Renewable energy
I will be informing you about nuclear energy. Prior to giving this information‚ let’s look at some history. Ancient Greek philosophers were the first to come up with the idea that matter is made up of invisible particles. The Greeks called these invisible particles "atoms"‚ which is Greek for invisible. Scientists studied this idea in the 18th and 19th centuries. After many experiments physicists found out that atoms contain a large amount of energy. Ernest Rutherford‚ a British scientist
Premium Nuclear fission Nuclear power Uranium