Darlene Garcia GEO 151 Prof. Denyse Lemaire WA1 Feb. 2010 1. What are the relationships among Earth’s mantle‚ crust‚ asthenosphere‚ and lithosphere? The core is divided into three major compositional layers. The crust on Earth’s surface‚ the rocky mantle beneath the crust and the metallic core which is the center of the Earth. While distinct and separate parts of Earth‚ they are all interconnected. The metallic inner core is solid‚ surrounded by a liquid (molten) outer core. Most of
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JEE(ADVANCED) – 2014 PAPER-1 Code-1 Questions with Answers PART – 1 PHYSICS SECTION – 1 (One or More Than One Options Correct Type) This section contains 10 multiple choice type questions. Each question has four choices (A)‚ (B)‚ (C) and (D) out of which ONE or MORE THAN ONE are correct. At time ?? = 0‚ terminal A in the circuit shown in the figure is connected to B by a keyand an (????)‚ with ??0 = 1Aand ω = 500 rad s-1 starts flowing in it with alternating current ??(??) = ??0 cos 1. the
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alloy microstructures‚ thin films. e.g. the shape of planets; tectonics; and earthquake prediction; e.g. such as designing foundations or structures e.g. designing failure resistant interconnects and packaging e.g. stress driven self-assembly on surfaces‚ atomic-force microscope/sample interactions. Manufacturing engineering Materials Science Geomechanics Civil
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The effect of size on the effectiveness of diffusion Aim: To use agar blocks infused with 0.1 Molar sodium hydroxide (NaOH) and phenolphthalein to investigate the relationship between shape and surface area: volume ratio on the effectiveness of diffusion. Hypothesis: That for a cube of agar‚ the time taken for complete colourisation due to diffusion of HCl is directly proportional to the cubes volume. Materials: |A block of agar (10cm x 5cm x 3cm) with 0.1M NaOH and |1x 250mL
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2 12 Other sources 13 Table of figures Figure 1. Soap molecules surrounding a layer of water making the film of a bubble 4 Figure 2. The general structure of a soap molecule 5 Figure 3. A table explaining that the sphere has the smallest surface area to volume ratio. 5 Figure 4. A flat interface between two bubble films 6 Figure 5. A cubic bubble film4‚ and a diagram of a wand that could form it2 6 Figure 6. Another cubic bubble film 6 Figure 7. A helical bubble film4‚ and a diagram of
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Exploration Research Question What is the effect of different concentrations of sucrose in a solution on the mass and surface area of a beetroot (Beta Vulgaris) piece? Background The membrane consists of a phospholipid bilayer which is semi permeable. Osmosis is the passive movement of water molecules from an area of high water potential to an area of low water potential across a semi-permeable membrane. It is easy for water molecules to pass through this membrane however solutes that are big in
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temperature. The network of hydrogen atoms links all the water molecules together which makes it much more difficult to escape. This property gives the water cohesiveness. A drop of water on a polished surface stays intact and hardly wets the surface however a drop of alcohol on the same surface just spreads across it. Relating to the theme the importance of this aspect is to
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is concentrated sulfuric acid but‚ sulfurtrioxide‚ chlorosulfonic acid‚ metallic sulfates‚ and sulfamic acid are also occasionally used. The name sulficants comes from these molecules moving to the surface of a liquid or to an interface between two liquids and changing the properties of the surface. However‚ the nature and properties of sulfuric acid‚ makes it desirable to use it for nucleophilic substitutions whenever possible. For each substance being suflinated‚ there is a critical concentration
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Introduction The secret to a good bubble is something called surface tension‚ an invisible bond that holds water molecules together. Water is a polar molecule‚ so it has plus and minus ends just like magnets that attract each other. When the water molecules align with each other they stick together‚ creating surface tension. You might think that it is the surface tension of the water that holds the skin of a bubble together. Actually‚ the surface tension of water is too strong to make a bubble. You can
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break down the surface tension of the water. These surfactants work on the surface of the water droplet to reduce its tendency to bead up by pulling the water and the wax on the leaf surface together‚ reducing the water’s surface tension and causing the water droplet to spread out. When the water used in pesticide sprays spreads out more evenly‚ the result is much better pesticide coverage. Adding APSA-80 helps insecticides‚ defoliators and foliar fertilisers to penetrate the surface of the leaf faster
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