the still tiny alternative energy market. In a minimum of fifty years fossil fuels‚ which include petroleum (oil)‚ natural gas‚ and coal‚ will all run out. Alternative energy is a renewable and the most productive type of energy for the USA and the world (United States. Department of Energy). Every person on this planet is provided with a dirty and unforgiving energy source‚ fossil fuels. Fossil fuels destroy and tarnish the once beautiful world. Alternative energy could slowing bring back some
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Energy An Analysis of Total Final Energy Consumption of Economies Introduction Sustainable development has been rapidly progressing in importance due to increased carbon emissions‚ which have been suggested to contribute to global warming (IPCC‚ 2007). Mitigation strategies include switching to cleaner energy‚ increasing energy efficiency or conservation of energy‚ and carbon capture & storage. To achieve this‚ coordinated efforts of all governments to implement effective policies is necessary
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or itself‚ it has energy. When you think of energy‚ you might think of action- or objects in motion‚ like the baseball that shatters a window. There are different forms of energy. Turn on an electric light and a dark room becomes bright. Turn on a music player and sound comes through your headphones. In both situations‚ energy moves from one place to another; effect and reaction. The two different types of energy are kinetic and potential energy. Kinetic energy is the energy a moving object has
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Work‚energy and power-Test 1 MATHMANIA September 24‚ 2013 Instructions - All questions carry 1 mark each TOTAL - 20 marks 1. A rod of mass m and length l is lying on a horizontal table. Find the work required to make it stand on one end. 2. A body is moved along a straight line by a machine delivering constant power. The distance moved by the body in time t is proportional to what power of time? 3. When kinetic energy of a body is increased by 300%‚ its momentum increases by what %? 4.
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Tutorial – Work‚ Energy (Assume the acceleration due to gravity‚ g = 9.81 m/s2 ) 1. Calculate the work done when a force of 40 N pushes an object a distance of 500 m in the same direction as the force. 2. Calculate the work done when a mass is lifted vertically by a crane to a height of 5 m‚ the force required to lift the mass being 98 N. 3. A spring‚ initially in a relaxed state‚ is extended by 100 mm. Determine the work done by using a work diagram if the spring requires
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Describe and explain the factors that influence how much a work a river can do (25) The work that a river does is erosion‚ transportation and deposition. The amount of work a river can do is dependent on the energy it has and this energy is determined by many factors. The study of water flow in a river channel is known as hydraulics. Hydraulic geometry is the study of the relationships that exist within river channels that ultimately determine how much work the river will be able to carry
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Zaim Afiq Zaki Morad Public Utilities 325 – Prof. Rodney Stevenson Public Utility Paper Nuclear Power plant as a new alternative source of energy in Malaysia The first time the world was exposed the enormous potential power of nuclear was when the United States of America dropped two atomic bombs into Japan which effectively ended World War 2. Almost every country stood by and watched as the bombs made by the simple process of fission of two atomic particles produced enough power to destroy
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Introduction Several years ago energy drinks barley existed. Not all people were familiar of it. People who consumed it did not understand the bad health effects behind it. This is because they were not as popular as it is today. Nowadays‚ energy beverages markets grew rapidly in recent years. There are many different brands of this drink in the world today. These beverages have caused many health problems to those who consume them. One group affected by the high consumption of energy drinks are children.
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QUESTION( Conservation of Energy) 1. Missy Diwater‚ the former platform diver for the Ringling Brother’s Circus had a kinetic energy of 15 000 J just prior to hitting the bucket of water. If Missy’s mass is 50 kg‚ then what is her speed? Solution: According to energy conservation‚ the kinetic energy at the bottom of the dive (15‚000J) is equal to her gravitational potential energy before the dive. We can use this fact to find her dive height: PE = mgh h = PE/mg = 15‚000J / (50kg)(9.81m/s²)
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power also zero. Answers: A Question 6: Any object that has kinetic energy must be a) moving. b) falling. c) high above the ground. d) at rest. Answers: A Question 7: A book is at rest on a tabletop. One student calculates the potential energy as 15 J. Another student calculates the potential energy as 20 J. Which statement is correct? a) One or both of the students must have calculated the potential energy incorrectly. b) Both answers could be correct. c) Both answers are wrong
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