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Entropy

What is entropy?


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collision

      In the collision described in Problem 2 above, consider an 85 kg passenger in each vehicle. What... ..?


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circular motion

An amusement park ride turns in a vertical circle (see, for instance, http://www.youtube.com/watch?v=sK010K3YprU). If riders are at a radius of... .. vertical.


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Electromagnetic Theory

Starting from  Derive the solution of the above equation. The answer must be an expansion in spherical harmonics. You can also us... ..n. :-)


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tether ball problem

  Randan is helping build a playground for his neighborhood and is asked to buy a rope for a tetherball setup (see photo at right). Th... ..?


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box on box

  The boxes in the figure below are initially at rest. The coefficient of static friction is 0.60 between the boxes and between the lo... ..less.


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