thorough knowledge of the twice-times table. The second concept was that they had the ability to find two-thirds of any number (Gillings 3). This number could be either integral or fractional. The Egyptians used the fraction 2/3 used with sums of unit fractions (1/n) to express all other fractions. Using this system‚ they were able to solve all problems
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much smaller than it is now. In figure 2‚ (graph a) the continent fraction of the Earth’s surface as a function of time shows that the continents at first were a small ratio compared to the ocean. It also reveals that as time progressed‚ the continents began to grow and so did the albedo. Graph b shows the surface albedo of the earth as a function of time‚ which verifies that the albedo indeed does increase as the continent fraction also begins to increase. Rosing also concluded that droplets in the
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“cool” person call you that‚ you’ll feel that your self-esteem has been crushed. In fact‚ nerds and geeks have been shunned by so-called “cool crowds” ever since the dawn of school fractions (some notable school fractions are: the populars‚ the jocks‚ the cheerleaders‚ and the nerd/geeks/brainiacs). Due to these fractions‚ more and more people are being insulted with the words “nerd” and “geek.” But why insult them? They’re the ones who enhance the computers and cellphones we use today. Without them
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modulus for epoxy reinforced with 70 vol % boron filaments under: (a) isostrain condition (b) isostress condition Given : Eepoxy = 6.9 GPa‚ Eboron = 410 GPa 7. Refer Question 6 : Generate a plot modulus elasticity‚ E versus volume fraction of filaments‚ Vp for the case of epoxy reinforced boron filaments. 8. Calculate the composite modulus for 20 vol % SiC whiskers in an aluminium matrix under: (a) isostrain condition (b) isostress condition Given : Ealuminum = 69 GPa
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COLLIGATIVE PROPERTIES 1. Calculate the vapor pressure when 10.o mL glycerol (C3H8O3) is added to 500.0 mL water at 500C. At this temperature the vapor pressure of pure water is 92.5 torr and its density is 0.988 g/mL. Density of glycerol is 1.26 g/mL. 2. Calculate the boiling point and freezing point of the solution if 1.00 kg of ethylene glycol (C2H6O2) is added to a car radiator which contains 4450 g water. a. Kb of water = 0.512 oC/m at normal boiling point of 100oC b. Kf of water
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gram-positive bacteria S. aureus colonies. In table 3‚ the survival fraction (SF) and the growth inhibition by percentage (%) were calculated from the mean CFU miliLiter-1 of each treatment per bacteria to further determine the trend of the treatments applied. Between the two types of bacteria‚ the E. coli showed a more positive reaction towards Photodynamic inactivation with blue LED because the decrease in survival fraction of E. coli is 0.90 of the total colony-forming units per mL from the control
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Suggested Solutions to Sample Midterm #1 Fi 4000—Fall 2014 Problem 1 (20 points) Part A Suppose Mike wants to prepare an amount of money today to support his son’s college education. He expects his son to enter a college in 16 years with annual tuition and expenses of $25‚000 for 4 years. His first college tuition and expenses will due in exactly 16 years from now. Mike decides to put all the money that is required for his son’s college education today at a bank account earning rate of
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balance hydrogen. The flow rate of the stream is 3000kg/h. Calculate the rate of flow nitrogen into the reactor in kg/h. 7. A mixture is 10.0 mole% ethyl alcohol‚ 75.0 mole % ethyl acetate (C4H8O2) and 15.0 mole% acetic acid. Calculate the mass fractions of each compound. What is the average molecular weight of the mixture? What would be the mass (kg) of a sample containing 25.0 kmol of ethyl acetate? 8. A 5.00wt % aqueous sulfuric acid solution (ρ=1.03 g/ml) flows through a 45m long pipe
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my opinion will eventually become a major tool in filmmaking‚ from documentaries all the way to major motion picture. I saw this because with drones and the advances in camera technology‚ it is possible to capture high-quality aerial footage for a fraction of the price and time that it would take using a helicopter‚ plane‚ or other form of technology to get that aerial shot. One example I can think of that we watched in class was the short film of Auschwitz. Granted‚ it might not have been absolutely
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virtue of its ability to radiate absorbed‚ or non-reflected solar energy. Solar heat incident on a roof is dissipated by means of three physical phenomena namely:a fraction of the absorbed heat is conducted to the ground and surrounding buildings a fraction is dissipated by convection to air leading to higher air temperatures‚ and a fraction is radiated to the sky. As such one has no control over the first two phenomena but the third one‚ that is‚ the amount of heat radiated can be maximized by Sunsheetal®
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