Tipping Point Discussion Questions Introduction 1) What was the point Gladwell makes with the Hush Puppy story? Hush Puppy is a kind of classic American shoes which were considered to be old fashioned in 1994. However‚ because no one would wear Hush Puppy in that age‚ this kind of shoes became so unique and catch some fashion designer’s attention‚ and then Hush Puppy became popular again. Hush Puppy story is an example of epidemics in action‚ through this story‚ Gladwell demonstrated
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critical point‚ the saturated liquid and saturated vapor state are identical. 5. At supercritical pressures‚ the substance is simply termed fluid rather than liquid or vapor. 6. If the initial pressure at –200C is 0.260 kPa‚ heat transfer results in increase of temperature to –100C. Ice passes directly from the solid phase to vapor phase. 7. At the triple point (0.6113 kPa) and a temperature of –200C‚ let heat transfer increase the temperature until it reaches 0.010C. At this point‚ further
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Optimal Growth Conditions and Generation Time for E. coli Introduction The goals of these exercises were to determine the optimal growing condition and the generation time of E. coli. Materials and Methods Please refer to the lab manual for a complete list of materials. To determine the optimal growth condition for E. coli‚ we had to test the environmental factors that could affect the growth. We tested the relative growth of E. coli in the presence and in the absence of oxygen. The results
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of solvent. · Paragraph 2: What could you improve on? (Do you think if someone repeated your lab they would get identical results? Why not? What are some steps you could take to improve the reliability and repeatability of your results?) Point: Although most variables were controlled for‚ the repeatability of this lab could be improved by including the following steps. Make sure the lab is quiet and distraction free at all times. This is important to the experiment because when a scientist
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Effect of Temperature on Solubility of a Salt Ahmed Mohammed 17-nov-2013 Abstract In this experiment‚ you will study the effect of changing temperature on the amount of solutet will dissolve in a given amount of water. In this experiment‚ you will completely dissolve different quantities of potassium nitrate‚ KNO3‚ in the same volume of water at a high temperature. As each solution cools‚ you will monitor temperature using a computer-interfaced Temperature Probe and observe
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Title Freezing and Melting Point Objectives 1. To gain proficiency in constructing a graph and plotting data points. 2. To determine the freezing points of a compound from the graph of decreasing temperature versus time. 3. To determine the melting points of a known and unknown compound. Introduction Physical changes are the changes in the physical properties of a substance (Moore‚ Stanitski & Jurs‚ 2009). Freezing point is the fixed temperature at which a pure liquid converted into crystalline
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Internal Assesment - Task 2C In this experiment I am investigating the relationship between surface area and the volume of a model cactus and to determine whether this relationship affects the loss of water. We used oasis blocks‚ an absorbant material used by florists as a substitute for a cactus‚ that would soak up the water‚ and thus ideally show the percentage water loss by weighing the before and after evaporation weights. Independent Variable The independent variable is the total surface
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intermediate work. No 1 2 3 4 5 6 7 8 9 10 190 100 280 400 7000 600 2000 2963.7 Saturated Liquid 60 1750 375 300 4893.1 1800 T (oC) P (kPa) h(kJ/kg) 275 4.00 0.0 Saturated Vapor v(m3/kg) u(kJ/kg) x (quality) Phase description 0.7 Question 2: (20 points) An insulated‚ vertical piston–cylinder device initially contains 10 kg of water‚ 5 kg of which is in the vapor phase. The mass of the piston is such that it maintains a constant pressure of 200 kPa inside the cylinder. Now steam at 0.8 MPa and
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3. The various packaging methods of granulated sugar that is distributed in supermarkets is important to consider because of environmental factors‚ cost-efficiency and customer satisfaction. The consumer is paying for a product and it is the producer’s job to ensure the packaging is effective as well as protective. Two types of granulated sugar packaging methods I will analyze are paper-based packages and re-sealable plastic zipper bags. Paper bags are most commonly used in supermarkets due
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Maricela Sandoval Period 2 10/27/12 Title of Lab: The Melting Temperature of a Pure Substance Purpose: The goal of this experiment was to find the melting point of Paradichlorobenzene and to observe the freezing/melting of a substance. The purpose was to also observe an endothermic and exothermic process. Introduction: The uses of Paradichlorobenzene are mainly as a fumigant for the control of moths‚ molds‚ and mildews‚ and as a space deodorant for toilets and refuse containers. It is also
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