9. A concrete highway is built of slabs 14 m long (20Cº). How wide should the expansion cracks be (at 20Cº) between the slabs to prevent buckling if the temperature range is -30Cº to +50Cº? I know I use the formula: L = LoT L = ? (Change in length of the slabs. We are solving for this.) = 12e-6 (Coefficient of expansion. I looked it up on page 388.) Lo = 14 m (Initial length of slabs.) T = 30 Cº (50Cº - 20Cº) (Change in temperaure. You only care about the hottest number
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How does geography continue to define and influence the people across the globe? What is geography? It is the study of the land we lived and the relationships between human and their environments; both the physical features of the Earth (such as landform or resources exploring) and the human societies developed across it can be explained through geography; it is also a study to examine how human culture interacts with the natural environment‚ and the impact of the locations and places on people
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permeability of the cell membrane. Introduction Located within the vacuole of beetroot cells is a red pigment call Betalains. Typically these pigments are contained within the cell vacuole by the tonoplast (vacuole membrane)‚ however When beetroot is heated these red pigments escape the vacuole. This experiment aims to explore the effect of temperature on the permeability of the cell membranes (i.e. Tonoplast). ‘The cell surface membrane is the plasma membrane that surrounds cells and
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planet some form of religion has seem to accompany them. Curiosity of the unknown and explanations for things that seem difficult to explain have seemed to spark these ideas of religion. Emile Durkheim sets to explain how society’s infatuation with religion. The explanation of different forms of symbols‚ such as sacred and profane. With these explanations from Durkheim and how he sets to describe the idea of religion‚ it is relatively safe to say religion can come from anything. In modern society there
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Osmosis and Diffusion Title: Diffusion and Osmosis AP Lab 1 Purpose: The purpose of this activity is to determine the effects of a selectively permeable membrane on diffusion and osmosis between two solutions separated by a membrane. Hypothesis: Procedures: In lab manual Material: In lab manual Background Information: Data: Table 1 Diffusion of glucose and iodine. | Color | Glucose | Time | Dialysis Bag | Beaker | Dialysis Bag | Beaker | Start | | | | | 30 minutes
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How does Marxism explain the role of education in society? The sociology of education is the study of how public institutions and individual experiences affect education and its outcomes. It is most concerned with the public schooling systems of modern industrial societies‚ including the expansion of higher‚ further‚ adult‚ and continuing education. Education has always been seen as a fundamentally optimistic human endeavour characterised by aspirations for progress and betterment. It is understood
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Stress and Cellular Membranes Bio Lab SBI 4U1 Due: Sept 24th‚ 2010 For: Ms. Barton By: Ameema Saeed Introduction: (See attached lab) Purpose: (See attached lab) Hypotheses: Tap water will cause no damage to the membranes. The extreme temperatures of the water cooled to 0°C‚ and heated to 94-100°C will greatly damage the membranes. Extreme heat will be more damaging than extreme cold. The more concentrated the solvent‚ the more damage it will cause to the membranes‚ therefore the solvent
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Diffusion of innovation and persuasion Diffusion‚ What is it? “Diffusion is the process by which an innovation is communicated through certain channels over time among the members of a social system.” “Diffusion is a special type of communication concerned with the spread of messages perceived (or understood) as new ideas” 2 Main Elements of Diffusion 1. 2. 3. 4. An innovation Channels of communication The spread and speed of the idea over time The social network and individuals who
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Correspondence table CHAPTER 2 6th edition Sonntag/Borgnakke/Wylen The correspondence between the problem set in this sixth edition versus the problem set in the 5’th edition text. Problems that are new are marked new and those that are only slightly altered are marked as modified (mod). Study guide problems 2.1-2.22 and 2.23-2.26 are all new problems. New 5th Ed. New 5th Ed. New 5th Ed. 27 1 47 new 67 24 28 new 48 16 68 new 29 2 49 17 69 new 30 new 50 new 70 23
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four laws of counterinsurgency: The First Law is support of the population is necessary for both the insurgent and counter-insurgent forces. Second Law‚ an active minority can gain support for either insurgent or counter insurgent forces. Third Law‚ popular support is continually conditional. Lastly‚ it takes a true commitment of both effort and resources to win. Of these four laws both President Obama and GEN Petraeus focus on the first and third laws. (Galula p 583-586) This first law‚ which
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