then determined that there were four ways to increase the reaction rate: increase temperature‚ add a catalyst‚ increase surface area‚ and increase the concentration of reactants. The objective of this lab was to experimentally show how temperature and surface area impact the rate of reaction‚ so only two of these methods were tested. The evidence indicates that increasing surface area increases the reaction rate‚ and increasing temperature also increases the reaction rate. Temperature is the measure
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Road Safety Lab Report Research Question: How is the stopping distance affect by the surface area of an object? Variables: Independent variable: The Different Surface Area (0cm2‚ 1760cm2‚ 2480cm2‚ 3440cm2‚ 3920cm2) Dependent variable: Stopping Distance Controlled variables: Mass of Object Environmental Conditions (Hallway Atmosphere) The surface of the road (Marble) The type of wheels (plastic) Height of the Ramp Background Information: The aerodynamics of an external object
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tsunami ever. When Mount St. Helens in Washington state erupted in 1980‚ it was the biggest eruption in the United States ever recorded. It also changed the earth’s surface immensely. There are many Geo processes on the Earth because it is in constant motion‚ so the Earth’s surface is always changing; three Geo processes that change the surface of the Earth most are volcanoes‚ tsunamis‚ and earthquakes. Importantly‚ volcanic eruptions are caused by changes in the Earth’s crust. Just outside Rome‚ there
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process that cells use to obtain oxygen‚ water and food. Also‚ how they lose waste substances‚ for example‚ urea and carbon dioxide. Basically‚ Diffusion is when particles move from an area of high concentration to an area of low concentration. The surface area to volume ratio of the cell is an important factor in diffusion. It is the effect of this factor that will be investigated in this practical. Materials used in the practical consist of blocks of agar jelly containing indicator‚ a sharp knife
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IEEE TRANSACTION ON VISUALIZATION AND COMPUTER GRAPHICS 1 Surface- and Contour-Preserving Origamic Architecture Paper Pop-Ups Sang N. Le‚ Su-Jun Leow‚ Tuong-Vu Le-Nguyen‚ Conrado Ruiz Jr.‚ and Kok-Lim Low Abstract—Origamic architecture (OA) is a form of papercraft that involves cutting and folding a single sheet of paper to produce a 3D pop-up‚ and is commonly used to depict architectural structures. Because of the strict geometric and physical constraints‚ OA design requires considerable
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Environmental Assessment: Forest Road Surface and Ditches Network One of the main objectives of this study is to investigate some intensity road characteristics based on ZEB1 LiDAR data. These intensity characteristics are the area with construction problems and the extent of the ditches network. As road construction problems here we consider the peaks and the depressions on the road surface that affect the transportation. In order to evaluate the flatness of the road surface we can make use of two relevant
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2 Angles make a difference Aim The aim of this experiment is to test whether the angle of sunlight affects the surface temperature on earth. Hypothesis I believe Block B will receive more sunlight than Block A‚ because the lamp shines directly onto Block B. Materials * * Lamp * 2 thermometers * 2 blocks of wood * Black plastic tape Procedure 1. Cut out two small identically sized pieces of black tape and attach onto wooden blocks so that they make pockets. 2.
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What reaction(s) could be occurring as the Na and K surface tarnishes? Write balanced equations for each reaction you can imagine. Hint: Recall air is mae up of water vapour‚ nitrogen‚ and oxygen. Suggest why oxygen (found as O2 in the air we breathe) is more likely to react rather than nitrogen (N2). The surface of Na and K could be tarnished because of reaction with oxygen. If Na or K is burned in air‚ the results are mainly formation
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Brief Paper #1 Harvey Burchett Northeastern State University SOWK 4733 Practice III Dr. Satara Armstrong‚ MSW February 8‚ 2012 Brief Paper #1 Both Jane Addams and Saul Alinsky‚ worked to enact social change within the poor neighborhoods of Chicago. Both would also go on to inspire many other social changes due to their methodologies and accomplishments. However‚ Addams’ and Alinsky’s approaches to bring about social change are often
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Affecting the environment Describe natural factors that have changed the surface and atmosphere of the Earth. Natural factors such as volcanic eruptions‚ changes in the Earth orbit and the amount of energy released from the Sun which can affect the Earth climate. Also human activities can be another reason why atmosphere is of the Earth is changing. When we burn fossil fuel such as coal‚ oil‚ and deforestation have caused the concentrations of heat-trapping “Greenhouse Gas” will increases significantly
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