the following numbers using scientific or "powers of 10" notation. a) 125 hundred million light-years 1.25 x 10 ^8 b) 125 billionths of a meter 1.25 x 10^-7 c) the average distance to our Moon in units of parsecs (Consult an appropriate Appendix of the text.) d) the average distance to our Moon in units of nanometers 2. How long does it take light photons to travel the following distances? (Assume light is traveling in a vacuum‚ like space.)
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Biofuels Biofuels are Fuels made from Biomass Biofuels are made from plants‚animals‚ or their waste products. Here I have listed three examples of biofuels beneath. 1 Micro-organisms decompose waste materials to produce biogas. 2 Biogas is usually about 70% methane and somewhere between 20 and 30 % carbon dioxide 3 the way we use it to generate energy is to burn it to heat up water which will then turn a turbine to produce electricity. It is also heard of to heat the water to steam which
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The average stock prices for each of the four years shown in Exhibit 1 were as follows: 1998 111/4 = 27.75 1999 163/4 = 40.75 2000 281/2 = 140.5 2001 91/2 = 45.5 a. compute the price/earnings ratio for each year. That is‚ take the stock price shown above and divide by net income per common stock-dilution from exhibit 1. 2001 (3‚417)/$ 0.27 = 12‚655.5 2000 (3‚379)/$0 .55 = 6‚143.63 1999 (3‚282)/$ 0.31 = 10‚587.09 1998 (3‚180)/$ 0.24 = 13‚250.00 b. Why do you think P/E has changed
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Pyrolysis of plastic wastes to fuel oil with and without catalyst Baoying Shi‚ Yufeng Wang Guangdong Dongguan Quality Supervision Testing Center Dongguan，China Chengzhi Chuai School of Material Science & Chemical Engineering Tianjin University of Science & Technology Tianjin‚ China Abstract—Two types of waste plastics were used in this study: polyethylene (PE) and polypropylene (PP). This paper described pyrolysis of plastic waste materials with and without catalyst. The influence of the
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risen. Gas has become pricey‚ and the controversial argument that oil will one day perish are factors that have led people to find other alternatives. Biodiesel is an efficient alternative fuel‚ for the reason that biodiesel is a safe‚ eco-friendly‚ and affordable option. Biodiesel is a clean burning alternative fuel. It is renewable and generated from a variety of vegetable oils and animal fats‚ not raw vegetable oil. Raw vegetable oil cannot be utilized because it has not undergone the process of
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industrialized economy and basically comprises of textiles‚ chemicals‚ food processing‚ the agricultural sector and various other industries. It is a surprising fact that Pakistan’s economy is the 27th largest growing economy in the world when measured in terms of Purchasing Power Parity (PPP). The economy has suffered from political instability‚ rising population growth rate and a war of words with the neighboring country India which has proved to be very costly for Pakistan’s economy. There is worldwide
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Which is best for the economy: employment stability or employment flexibility? A recent article in the ILO’s International Labour Review analyzes the relationship between employment stability and productivity in six major sectors in 13 European countries. According to the authors‚ both‚ extensive and short job tenure can produce adverse affects on productivity. They propose a policy of ’protected mobility’ on the labour market‚ together with active labour market policies seeking to combine both
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A “Hedge” of the Pack: A Review of Southwest Airlines Innovative Fuel Strategy While many airlines suffer from rising fuel costs‚ Southwest Airlines continues to emerge victorious in the aeronautical landscape. Other carriers now forced to increase prices to compensate for fuel costs‚ are now subject to the new mindsets of consumers who are opting for longer bus and car rides‚ or simply not traveling at all. The woes of the airlines industry have many posing the question if airline travel
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Alternative Fuels – Data By: Denise Claire Tan Yet Nee Structure and physical properties of Molecules Nowadays‚ there are a lot of alternative fuels which have discovered by human beings in order to replace the depleting non-renewable fossil fuels supply. In fact‚ organic chemistry has successfully proved that organic compounds can be served substitution of fossil fuel supply. The structure and physical properties of organic molecules are characteristics that aid them to become useful fuels for
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Bioethanol Fuel 1 The Efficacy of Bioethanol Fuel Elizabeth Wainright Little Rock Central High School 10th Grade Thompson Bioethanol Fuel 2 Bioethanol fuel is (Bioethanol Fuel. Com) “mainly produced by the sugar fermentation process‚ although it can be manufactured by the chemical process of reacting ethylene with steam” Bioethanol comes from an renewable resource that mainly grows in the United Kingdom. Kerosene is (A Comparisons of Three Kerosene Fuel Surrogates
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