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9.2 Dynamic range

The quietest sound we can hear corresponds to a pressure wave with an amplitude of about 10 μPa, which is a very small pressure amplitude indeed. It is about 0.000 000 01 per cent of nominal atmospheric pressure, and the resultant displacement of the eardrum is less than a tenth of the diameter of a hydrogen molecule.

At the upper end of the scale, a sound that is distressingly loud might typically correspond to a pressure wave with an amplitude of 0.01 per cent of nominal atmospheric
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5.5.2 Skirts and breeching

Look carefully at Images 46, 47 and 48.

Image 46 Photographer/Painter: Hills & Saunders, Eton. Subject: Michael Cahne Seymour, 1871.
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1.2 Lines

The equation of any line in 2, except a line parallel to the y-axis, can be written in the form

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CVs and Letters to Employers
CV’s and Letters to Employers is one of several Futures workbooks which help students choose and prepare for their careers. Like the other workbooks in the series you can dip in and out doing the exercises which are most relevant to you. You might want to include the exercises or the output in your personal development plan or e-portfolio.
Author(s): Leeds Metropolitan University

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http://creativecommons.org/licenses/by-nc-sa/2.0/uk/

HLPC Cultural Medallion, Albert Sprague Bard, September 23, 2013
Installment of the Cultural Medallion honoring Albert Sprague Bard on September 23, 2013. Barbaralee Diamonstein-Spielvogel established the Cultural Medallion program for the Historic Landmarks Preservation Center. From the Barbaralee Diamonstein-Spielvogel Collection, David M. Rubenstein Rare Book and Manuscript Library, Duke University.
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Top financial leaders at the IMF meet to avert recession
Alarmed by faltering euro zone growth, top finance officials from around the globe press their European peers for action to avert a recession. Rough Cut (no reporter narration). Subscribe: http://smarturl.it/reuterssubscribe More updates and breaking news: http://smarturl.it/BreakingNews Reuters tells the world's stories like no one else. As the largest international multimedia news provider, Reuters provides coverage around the globe and across topics including business, financial, national,
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2.4.2 The visual arts

These are closely related to archaeology. They, too, are things we can look at and touch after all. The difference is very much one of interpretation. Are the Parthenon statues art or archaeology; is an ancient painted pot art or archaeology? In order to avoid such questions, many people use the term ‘material culture’ to cover both. For many purposes, the difference doesn't matter. In fact, it is a good illustration of the advantages of interdisciplinary work, with different kinds of app
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16th Annual Lions Oratory Competition 2010
In this year's Sixteenth Annual Lions Oratory Competition, student representatives from the ANU Colleges competed for the perpetual Oratory Trophy and prizes totaling $3,000 in cash. The objective of the competition is to give an opportunity to students to master and excel in the art of oratory by reading widely on subjects dealing with human values.To create interest in the study of the lives of great women and men who, often at enormous personal sacrifice, realise outstanding achievements whic
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Keep on learning

Study another free course

There are more than 800 courses on OpenLearn for you to choose from on a range of subjects. 

Find out more
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Lecture 09 - 4/20/2007
Lecture 09
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5.1 Introduction

Water for public supply can be obtained from underground sources by wells sunk into aquifers, or from surface sources such as purpose-built reservoirs or lakes (collecting rainwater run-off or water from streams) and rivers. The safety of the water is of utmost concern – several million people die each year after consuming contaminated water. The primary aim in water treatment is the elimination of any pathogenic micro-organisms present. All the above-mentioned sources can be subject to pol
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Proyecto Fin de Carrera
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Advanced Audio Blog #29 - El Carnaval (Mexico)
Learn Spanish with SpanishPod101.com! Welcome to another edition of the Advanced Audio Blog, coming from Mexico City today. Here, Gayne tells us all about the famous celebration of “el carnaval”. This is a great lesson to learn about Mexican customs and listen to an authentic Mexican accent. The Advanced Audio Blog Series at SpanishPod101.com provides [...]
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2.6 Negative powers

Now look at what happens when the power is negative. What does 10−3 mean? What is the result of the following calculation?

100 ÷ 100 000

What you are actually being asked to find is:

But look at the calculation again. Using the
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Not Translated, Non-Equivalent, Incommensurate: Rethinking the Units of Comparision in ...

Conférence d' Emily APTER , Professor of French and Comprative Litterature. New York University


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7.4 Emergency procedures

7.4.1 What do you do if a chemical catches on fire?

It is important to know which fire extinguisher is appropriate for the chemical you are using. The four commonly used extinguishers are carbon dioxide, dry powder, foam, and water.

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4.5.3 Dative bonds

So far, the bonds in our Lewis structures have been shared electron pairs made by taking one electron from each of the two bound atoms. But this need not necessarily be the case. In Sections 4.5.1 and 4.5.2, we encountered the colourless gases NH3 and BF3. When these gases are mixed, a solid compound H3NBF3 is formed as a dense white smoke. The chemical equation for the process is:


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Rich Interpretations of the Face
00:01:34
© 2000–2017 The Metropolitan Museum of Art. All rights reserved.

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6 Conclusion

  1. It is essential that societies seek ways of becoming environmentally sustainable and adaptable to unknowable environmental changes, particularly in the climate. This must happen in the context of globalisation. The concept of sustainability is coming to prominence at a time when established structures of government are being questioned and new ways of thinking about governance are being explored.

  2. Globalisation has several dimensions that are r
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Robot firefighter puts out its first blaze
Full story: http://bit.ly/1LPv4KL Designed for putting out flames in the cramped quarters of a ship, the SAFFiR robot has had its first successful test
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