Energy Resource Plan As the power bill is nearing to be three times as much as it has been‚ one thing on every household’s mind is‚ how are we going to conserve energy? Conserving energy is more than just “saving the planet”. It is preserving earth for future generations‚ your kids‚ your grandkids‚ and your lineage. We need to treat the earth like a precious family heirloom that is nearing its breaking point. There are two categories of energy: renewable and nonrenewable. Renewable energy comes
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Calculating Efficiency. Efficiency (%) = Useful Energy Out x 100 Total Energy In Questions 1) A light bulb takes in 30J of energy per second. It transfers 3J as useful light energy and 27J as heat energy. Calculate the efficiency. 2) A kettle takes in 2000J of energy per second. It transfers 1500J as useful heat energy and 500J is wasted as sound energy. Calculate the efficiency of the kettle. Remember: In the exam they may not
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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
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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
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Renewable Energy is Best Michelle Johnson HUM/111 March 26‚ 2011 L. Flemister Renewable Energy is best America’s dependency on foreign oil is costing us more than just money; it costs us our clean air and potentially thousands of jobs in America. Our nation needs to create its own renewable energy. The dependency on other countries is crippling our economy. Drilling for oil in the United States is not the answer. We need to take better care of our planet and that each of us must
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com/blog/green-tech-past-present. Treehugger. (Feb. 9‚ 2007). How To Go Green: Why Go Green. Retrieved from http://www.treehugger.com/htgg/how-to-go-green-why-to-go-green.html Walsh‚ B Wesoff‚ E. (July 4‚ 2013). US Energy Transitions 1776 to 2076. Retrieved from http://www.greentechmedia.com/articles/read/US-Energy-Transitions-1776-to-2076 Whipps‚ H
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Hydraulics Prof. B.S. Thandaveswara 9.3 Application of Specific Force and Specific Energy 1. Determine the energy Loss in a NHJ Solution: Applying Momentum equation γQ ( V2 − V1 ) = P1 − P2 g γ Q 2 ( y1 − y 2 ) gb 2 y1y 2 2 2 2 = y1 − y 2 ( ) Q2 2gb Q2 b 2 = ( y1 + y2 ) y1y2 4 = q2 q 2 ( y1 + y 2 ) y1y 2 = (1) 2g 4 Specific energy equation y1 + V12 V2 = y 2 + 2 + ∆E 2g 2g Q2 2 2gy1 b 2 ∆E = y1 + − y2 − Q2 2 2gy 2 b 2 1 ⎤ q2 ⎡ 1 ∆E = ( y1 − y
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that could power a jet‚ NASA engineer Bilal Bomani presents his work in turning the field of aviation into an environmentally friendly service. At NASA’s GreenLab Research Facility‚ he uses algae and halophytes to create a self-sustaining‚ renewable energy ecosystem that doesn’t consume arable land or fresh water. Bomani’s work has a set of guidelines which it must follow. In order to be truly Green‚ Bomani’s fuel must be Sustainable‚ Alternative and Renewable. Meaning that it must have a low carbon
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Experiment 4.5 Measuring the energy content of a “Dorito” and Popcorn. Using the method as described on page 46 of the textbook‚ measure the energy content of a Dorito and a “Popped” corn kernel. Aim: 1. Compare your results of each food and determine which will give the greatest energy per gram. 2. How much of each food would you need to boil 250mL of water? Hypothesis: (Before you begin‚ what do you think will be the conclusion.) As the Dorito is heated‚ it will release much more heat
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Energy in food lab report Aim: How much energy there is in food. Hypothesis: If I work out how much the water temperature has risen by burning food underneath water‚ the mass of the water and the mass of food I can work out how much energy was in the food. Introduction: This experiment is about how much energy there is in food. There are a few different types of energy‚ the one we are looking at is chemical energy. Some other types of energy are: thermal energy which is heat‚ magnetic energy which
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