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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Energy is the ability to do work. It is important because every object we produce requires energy; for example transport‚ growth‚ and development. Humans and all other things get energy from the sun. Some forms of energy are kinetic‚ potential‚ thermal‚ chemical‚ electrical‚ and mechanical. Kinetic energy is the energy of motion. Potential energy is the energy which results from a position or configuration. Thermal‚ or heat‚ energy is the energy a substance or system has related to its temperature
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Solar Energy Alternative energy resources are being closely evaluated because of the depletion of nonrenewable resources‚ such as fossil fuels. Fossil fuels and other nonrenewable resources have damaged earth because of the amount of pollution that is released some‚ in which is known as Carbon Dioxide. Massive amounts of Carbon Dioxide are that is released into our environment every year further damaging our planet. Scientist has been effectively working on ways of conserving energy that is
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Dark energy what is it? Dark energy is a unknown energy said to take up 70 percent of the universe. The energy is a repulsive gravitational effect that is causing the universe to accelerate out-ward. No one knows exactly what dark energy is or where it comes from. Dark Energy is a new idea. Little is known about dark energy‚ yet it takes up a huge amount if the universe. Scientist were able to show the universe was expanding at an accelerated rate by measuring the red-shift of an object by comparing
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issues in today’s world is that of energy sources to power an increasing global demand. Traditionally‚ humans have converted energy from natural resources like coal and natural gas for use. However‚ these sources of energy are both nonrenewable and cause large amounts of pollution. As we progress through the 21st century‚ renewable energy sources like solar and wind energy will see increased use to replace traditional sources. One of these sources‚ wind energy‚ is seeing a rise in development because
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Renewable energy is the need of the hour It is the year 2050‚ Earth is so polluted‚ vision is obscured by smog‚ lakes and streams are poisoned. Oh! What a terrible sight. This may become a reality‚ if we keep using non-renewable energy resources. Hello there! A very good morning and I am Pranav Athreya and you have guessed it right‚ I am speaking for the topic Renewable energy is the need of the hour. At present‚ the main energy sources used are non-renewable fossil fuels like coal‚ petroleum‚ and
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Running Head: Energy Conversion Energy Conversion Marlon Walker Professor Abdul Kahn SCI 110: Integrated Science October 21‚ 2011 Abstract Energy conversion has been a topic of debate and research for many years. Scientists conduct experiments in hopes of finding an alternative to relying on burning fossil fuels for electricity. While companies who believe their alternative is the best choice‚ debate over whose source is the “greenest”. Whether it be biomass‚ hydroelectricity‚ solar
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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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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
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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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