• Geostrategy of the Peloponnesian War 5: Politics and Strategy
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    Geostrategy of the Peloponnesian War 5: Politics and Strategy

    Hi, and welcome to Strategy Stuff. This is a video series I originally made for CaspianReport on the geostrategic analysis of the Peloponnesian War. In the fourth video, we looked at how competing Athenian and Spartan strategies finally culminated in a Spartan victory in the final phase of the War. Now, we conclude the series by looking at how politics influenced Athenian and Spartan strategymaking. * I. National Character One of the themes in Thucydides’ History revolves around the influence of ‘national character’ on strategymaking. According to the historian, all states share the same two goals: the desire to be free from domination, and also the desire to dominate others.…

  • (previous version) AP Physics C: Universal Gravitation Review (Mechanics)
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    (previous version) AP Physics C: Universal Gravitation Review (Mechanics)

    – Good morning, today we’re going to review universal gravitation as a part of the AP Physics Exam C Mechanics curriculum. ♫ Flipping Physics ♫ Bobby what is the equation for the force of gravity or the weight acting on an object? – Force of gravity equals mass times acceleration due to gravity. – Yes. However, I do wanna point out there is an assumed subscript in this equation. I have added an O to the mass to identify this as the mass of the object on which the force of gravity is acting. Remember this is the force of gravitational attraction between the object and a planet. For us…

  • Karl Marx & Conflict Theory: Crash Course Sociology #6
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    Karl Marx & Conflict Theory: Crash Course Sociology #6

    You’ve probably heard of Karl Marx. He’s remembered as the father of divisive political movements, and his name is sometimes still thrown around in American politics as a kind of slur. But I don’t want to talk about that. I want to talk about Marx the philosopher. Marx the scholar. In the 19th century, a time defined by radical inequality and rapid technological and political change in Europe, Marx was concerned with one question: What does it mean to be free? Starting from this question, Marx developed an entire theory of history. And in doing so, he laid the foundation for the paradigm of conflict theory in sociology, ultimately pushing…

  • AP Physics 1: Universal Gravitation Review
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    AP Physics 1: Universal Gravitation Review

    mr.p: Good morning. Today are going to review the universal gravitation topics covered on the AP physics one exam. Bo: Hey guys. Billy: Hey Bo. Bobby: Hi Bo. ♫ Flipping physics ♫ mr.p: Let’s start with Newton’s Universal law of Gravitation which I like to call the big G equation. The force of gravity that exists between any two objects is equal to big G, which is the universal gravitational constant, times the mass of one object times the mass of the other object divided by r squared. Where big G is a constant and it is given as… Big G is 6.67 times ten to the negative 11 newtons,…

  • Congressional Leadership: Crash Course Government and Politics #8
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    Congressional Leadership: Crash Course Government and Politics #8

    Hi, I’m Craig and this is Crash Course Government and Politics, and today we’re going to examine the leadership structure of Congress! I know, pretty exciting stuff! Now calm down, let me explain. [Theme Music] Are you ready to talk about Congressional leadership? You better be. So, the Congressional leadership are the Congresspersons with titles like Majority Leader and Minority Whip, and they have a lot to do with political parties, so we’re going to talk about what the political parties do in Congress as well. Even if you don’t follow politics, you probably have heard of the name and titles, if not the functions, of the various leaders. I’m…

  • How to Tell Customers You Exist: Crash Course Entrepreneurship #11
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    How to Tell Customers You Exist: Crash Course Entrepreneurship #11

    Here’s a cold, hard truth: no business, no matter how innovative and amazing it is, will survive if people haven’t heard of it. If people don’t know something exists, they’ll never be able to purchase it. Beyonce might drop a surprise album, but then she promotes the heck out of it. The hype she gets from the surprise is part of her entrepreneurial strategy! Ever since we’ve had products and services, we’ve needed channels to create awareness and communicate with our customers. And as our culture has evolved, so have our channels — from simple posters in the 1800s, to the launch of Pinterest (and the heyday of DIY wedding…

  • Congressional Committees: Crash Course Government and Politics #7
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    Congressional Committees: Crash Course Government and Politics #7

    Hi, I’m Craig and this is Crash Course Government and Politics and today we’re going to get down and dirty wallowing in the mud that is Congress. Okay, maybe that’s a little unfair, but the workings of Congress are kind of arcane or byzantine or maybe let’s just say extremely complex and confusing, like me, or Game of Thrones without the nudity. Some of the nudity, maybe. However, Congress is the most important branch, so it would probably behoove most Americans to know how it works. I’m going to try to explain. Be prepared to be behooved. [Theme Music] Both the House of Representatives and the Senate are divided up…

  • The Integumentary System, Part 2 – Skin Deeper: Crash Course A&P #7
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    The Integumentary System, Part 2 – Skin Deeper: Crash Course A&P #7

    Look at all this stuff! Soaps, lotions, conditioners, polishes — all from that huge section of your local store that’s dedicated solely to the grooming of your skin, hair, and nails. Some might see these things as the trappings of vanity. But me? I see them as the tools for the care, maintenance, and — sure, sometimes decoration — of the integumentary system. Now, true, in spite of what the cosmetics industry may lead you to believe, your integumentary system is more than just a place to put eye shadow and hair product in the hopes of attracting a mate. This collection of resilient tissues, ranging from the sharp and…

  • Haitian Revolutions: Crash Course World History #30
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    Haitian Revolutions: Crash Course World History #30

    Hi, I’m John Green. This is Crash Course World History. And apparently it’s Revolutions Month here at Crash Course, because today we are going to discuss the often-neglected Haitian Revolutions. The Haitian Revolutions are totally fascinating and they involve two of my very favorite things: 1. Ending slavery, and 2. Napoleon getting his feelings hurt. I can’t help myself, Napoleon. I like to see you suffer. [theme music] So, the French colony in Saint-Domingue began in the 17th century as a pirate outpost. And its original French inhabitants made their living selling leather and a kind of smoked beef called boucan. All that beef actually came from cattle left behind…