12.620J Classical Mechanics: A Computational Approach (MIT)
We will study the fundamental principles of classical mechanics, with a modern emphasis on the qualitative structure of phase space. We will use computational ideas to formulate the principles of mechanics precisely. Expression in a computational framework encourages clear thinking and active exploration. We will consider the following topics: the Lagrangian formulation; action, variational principles, and equations of motion; Hamilton's principle; conserved quantities; rigid bodies and tops; Ha
Author(s): Sussman, Gerald,Wisdom, Jack

## Activity 22

A friend has been quoted a price of Â£25.50 per square yard for tarmac surfacing of his yard. The yard measures 6 yards by 10 feet. Here is his calculation of the total cost. What is wrong with it?

cost =
Author(s): The Open University

You may find it useful to plan the way you will start your exam. Having a routine can be calming when under pressure. This is from a student who recommends a checklist:

I have a mental checklist of what I need to do once I've turned over the paper. I do this because I used to rush in and answer the fir
Author(s): The Open University

1.1: Converting to component form

In some applications of vectors there is a need to move backwards and forwards between geometric form and component form; we deal here with how to achieve this.

To start with, we recall definitions of cosine and sine. If P is a point on the unit circle, and the line segment OP makes an angle Î¸ measured anticlockwise from the positive x-axis, then cosÂ Î¸ is the x-coordinate of P and sinÂ Î¸ is the y-coordinate of P (
Author(s): The Open University

Westward Expansion Overview
A two minute video from the viewpoint of a pioneering family. Lacks insights and the ending is questionable as to merit.
Author(s): No creator set

1.2.7 Summary

• What we must do to understand numbers as they are used as evidence in social science is to practise and so become familiar with them, and to understand the conventions which determine how they are used.

• Sets of numerical data can be presented in many ways, as tables, bar charts, pie charts or line graphs. These are just different ways of trying to represent or make a picture of numbers. Which is used is largely a matter of which best shows
Author(s): The Open University

2.2 Tables and percentages

Tables often give information in percentages. The table below indicates how the size of households in Great Britain changed over a period of nearly 30 years.

Number of people in household1961 (%)1971 (%)1981 (%)1991 (%)
1Author(s): The Open University

Probably the single most important way of retaining people's support and goodwill is to say thank you promptly and to demonstrate that you have noted and valued whatever it is they have contributed. If you do not have the systems to guarantee that supporters are thanked appropriately, then you cannot seriously expect to move anyone anywhere â€“ be it up a pyramid, into a kite or round a matrix.

Author(s): The Open University

In the quest to understand health and illness behaviour, social and medical researchers have developed various models to explain the different forms of health care delivery. These models emerged because, in the mid-20th century, social researchers began to question not only the position of professions in western countries but also the relationship between professionals and users. Early explorations of the patient's role in health care suggested that it was fairly prescribed (Parsons, 1951), a
Author(s): The Open University

How a Rainbow Works
This video shows how sunlight goes through raindrops and is separated into the colors we see in the rainbow. Good explanation on how the eye sees the rainbow. (03:17)
Author(s): No creator set

Rock: I Love You Lord
A colorful backgroud with lyrics of the song. Rock rhythm for a religious song that may be liked by teenagers.
Author(s): No creator set

Resource #16042
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Author(s): No creator set

The Industrial Revolution
Before the Industrial Revolution everything was produced by hand. Beginning in the 19th century, advances in manufacturing revolutionize the American way of life. A man named Samuel Slater memorized the plans for factories and brought them over to America. This started up the Industrial Revolution in America. Americans began moving into cities to work in factories. Assembly lines started appearing in factories which led to unskilled workers like women and children working. (2:31)
Author(s): No creator set

Free trade or fair trade? This unit will help you to analyse the relationship that exists between developed and developing countries under the World Trade Organization regime of Development Round negotiations. The current world trade regime has a very mixed record in promoting growth and reducing poverty.

This material is from our archive and is an adapted extract from Making the international: Viewpoints, concepts, and models in international politics and economics (DU321) which
Author(s): The Open University

The question of policy delivery seems to be growing in importance. So, for example, the Blair governments in the UK were, from the outset, preoccupied with â€˜delivery, delivery, deliveryâ€™ as ministers and prime minister grew increasingly frustrated with what was often viewed as the intransigence of public service professionals. The constant cycle of change, in which new policies and initiatives were introduced in rapid succession, producing what critics described as â€˜policy overloadâ€™ o
Author(s): The Open University

Toxic Inequality in the United States: economic inequality and racial injustice driving ugly politic
Speaker(s): Professor Thomas Shapiro, Zamila Bunglawala | In his latest book, Toxic Inequality, which he will discuss in this lecture, Thomas Shapiro examines a powerful and unprecedented convergence in the United States: historic and rising levels of wealth and income inequality in an era of stalled mobility, intersecting with a widening racial wealth gap, all against the backdrop of changing racial and ethnic demographics. Thomas Shapiro (@tmshapiro) is Director, Institute on Assets and Social
Author(s): No creator set

Traditionally, the interview has been the main means of assessing the suitability of candidates for a job. Almost all organisations use the interview at some stage in their selection process. Similarly, most applicants expect to be interviewed. Interviews are useful for assessing such personal characteristics as practical intelligence and interpersonal and communication skills. The interview can be used for answering applicantsâ€™ questions, selling the organisation and negotiating terms and
Author(s): The Open University

The versatility of mammals is a central theme of the 'Studying mammals' series of units, but surely no environment has tested that versatility as much as the rivers and oceans of the world. Mammals are essentially a terrestrial group of animals, but three major groups have independently adopted an aquatic way of life. In moving to the water, aquatic mammals have had to survive, feed and reproduce using a set of biological characteristics that evolved in association with life on land. This cou
Author(s): The Open University

Working with dilemmas
Dilemmas are part of the fabric of organisational and individual life; these are often presented as the choice between two (or more) equally compelling propositions. In this free course, Working with dilemmas, you will focus on how to address dilemmas effectively. In particular, you will explore the extent to which dilemmas are or should be treated as choices between two extremes, and how the response to and resolution of dilemmas can move beyond binary choices to the reconciliation of opposites
Author(s): Creator not set

Real Brazilian Conversations #66: Hannah
In this episode, AndrÃ© talks to his friend Hannah Montana! Ok, just kidding... Hannah is Tiago's girlfriend. Listen to the episode. The post Real Brazilian Conversations #66: Hannah appeared first...

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