Engineering Materials Week 10 14.4 (a) Compute the repeat molecular weight of polypropylene. (b) Compute the number average molecular weight for a polypropylene for which the degree of polymerization is 15‚000. 14.10 Using the definitions for total chain molecule length L and average chain end-to-end distance r‚ for a linear polytetrafluroethylene determine: (a) the number average molecular weight for L=2000 nm. (b) the number–average molecular weight for r=15 nm. 14.19 (a) Determine the
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MATERIALS REVOLUTION UNIT REVISION BOOKLET Vikram Mahal How To Use this Booklet: This booklet has been created by addressing all the points on the OCR B salters specification for the section‚ what’s in medicine. I advise reading through the Book‚ highlighting or underlining words written in ALL CAPITALS. I also suggest making a spider diagram or mind map to summarise key points and help the information here stick in your mind. You could also draw your own images by points on this
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APES Unit 24 Solid and Hazardous Wastes Municipal solid waste (MSW) consists of solid materials discarded by homes‚ office buildings‚ retail stores‚ restaurants‚ schools‚ hospitals‚ prisons‚ libraries‚ and other commercial and institutional facilities. Non Municipal solid waste consists of solid waste generated by industry‚ agriculture‚ and mining. A sanitary landfill is the most common method of disposal of solid waste by compacting it and burying it under a shallow layer of soil. The
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The History of Management Thought The Beginning of Management It is highly probable that the management process first began in the family organization‚ later expand to the tribe‚ and finally pervaded the formalized political units such as those found in early Babylonia. In these organizations‚ a type of financial control and record keeping was invented which usually took the form of clay tablets with inscriptions. The recognition of the concept of managerial responsibility
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Modern Theory- “Management is an art of getting things done through people.” The modern organizational theory is regarded as recent development in management theory. They represent integrative approach to management. There is no one best way of doing things under all conditions. Methods and techniques which are highly effective in one situation may not work in other situations. Situation plays an important role in application of management function. Functions are universal but their application
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Materials in Our Daily Life : 95 : 21 Materials in Our Daily Life The basic aim of science is not only to study and understand natural phenomena but also to use this knowledge to make our lives more comfortable. Science and technology have enabled us to develop more economical and convenient methods to recover useful materials from nature and to put them to various uses. Chemistry has enabled us to synthesize new materials which have desired properties‚ thus‚ making them even better than natural
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9Steps to Babysitting an Infant If you’re babysitting a child in his or her first year of life and who hasn’t learned to walk yet‚ it’s not the same as taking care of a toddler or an older child. Infants are very fragile and require special attention and care. Step 1: Have a fill in form ready for the parents. It should include parent emergency contact info‚ what to feed the baby‚ the baby’s allergies‚ and other stuff you should know in case of an emergency. Step2: Make sure the baby
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Finding Specific Heat Capacity of a Solid using Method of Mixtures | VISHWASHANTI GURUKUL Department of science-Physics Year: 2012-14 Level: HL | Name of candidate : ……………………………………………… Date: 08/01/2013 Name of Teacher: Chandra Sekhar Mogilisetti “Professor Lieber notes that using copper in the manufacture of coffee cups is not the wisest choice.” Specific Heat Capacity of Solid In this lab you will be assessed on the following
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The Usage of Information Communication Technology in Science and Technology Information Networks in Sri Lanka R. P. R. N. Premarathna No. 361/1‚ Manel Watta Road‚ Bollegala Gonewala (w.p.)‚ Tel. 0714307681‚ Email. ranjan.nishantha@gmail.com A number of cooperative programmes including exchange of information can be seen among member libraries of the Science & Technology information networks in Sri Lanka. At present most of information networks in other countries engage in their cooperative
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Shear Stress Forces parallel to the area resisting the force cause shearing stress. It differs to tensile and compressive stresses‚ which are caused by forces perpendicular to the area on which they act. Shearing stress is also known as tangential stress. where V is the resultant shearing force which passes through the centroid of the area A being sheared. Problem 115 What force is required to punch a 20-mm-diameter hole in a plate that is 25 mm thick? The shear strength is 350 MN/m2
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