101 Proposal and Salsa Professor Ramos Blog

101 Proposal and Salsa Chips and Salsa Dont you hate it when you have too much of one and not enough of the other? There has to be the appropriate amount of chips to salsa for it to work, to taste good. Or Thinking Rhetorically. Examples Great Images End of Cisneros’ Stories The last stories are much more subtle in their messages than the first stories. To understand these stories you need to read carefully, closely, in between the lines. Try to figure out what is the author’s purpose. Why did the author write this? What is the authors purpose? What is the lesson or message? There was a Man, There was a Woman (133) There was a Man, There was a Woman Video Free Writing Five minutes of free writing on whatever story you are thinking about writing on. Try to connect to the topic you are thinking about and what the support is going to be. What scenes come to mind? Subgenres Thematic Interpretation focus on theme in story or stories Character Analysis Focus on character Close Reading Argue for your reading of the story Book Review Evaluate the merits of a book or story Author Extension Continue a story, write a new story in the style of Sandra Cisneros, Retell a story from the book. Sample Essays The Misfits Loving a Broken Girl The Hidden Complexities of Clemencia Proposal You can analyze a character, theme, or any of the items we will discuss in class. Pick something that interests you. An effective proposal has a narrow focus, clear thesis, includes primary claims, and context for why you think this is important to write about. Make sure you are annotating your book as you read so that you can easily find quotes and sections to include in your analysis paper. Questions: What is your topic? Why are you writing about this? Why does it interest you? Do you need to do any research to help with your analysis?

Perfectly Inelastic Collision Definition in Physics

Perfectly Inelastic Collision Definition in Physics A perfectly inelastic collision is one in which the maximum amount of kinetic energy has been lost during a collision, making it the most extreme case of an inelastic collision. Though kinetic energy is not conserved in these collisions, momentum is conserved and the equations of momentum can be used to understand the behavior of the components in this system. In most cases, you can tell a perfectly inelastic collision because of the objects in the collision stick together, sort of like a tackle in American football. The result of this sort of collision is fewer objects to deal with after the collision than you had before the collision, as demonstrated in the following equation for a perfectly inelastic collision between two objects. (Although in football, hopefully, the two objects come apart after a few seconds.) Equation for a Perfectly Inelastic Collision:m 1 v1i m2 v2i ( m 1 m 2) vf Proving Kinetic Energy Loss You can prove that when two objects stick together, there will be a loss of kinetic energy. Lets assume that the first mass, m1, is moving at velocity vi and the second mass, m2, is moving at velocity 0. This may seem like a really contrived example, but keep in mind that you could set up your coordinate system so that it moves, with the origin fixed at m2, so that the motion is measured relative to that position. So really any situation of two objects moving at a constant speed could be described in this way. If they were accelerating, of course, things would get much more complicated, but this simplified example is a good starting point. m1vi (m1 m2)vf[m1 / (m1 m2)] * vi vfYou can then use these equations to look at the kinetic energy at the beginning and end of the situation.Ki 0.5m1Vi2Kf 0.5(m1 m2)Vf2Now substitute the earlier equation for Vf, to get:Kf 0.5(m1 m2)*[m1 / (m1 m2)]2*Vi2Kf 0.5 [m12 / (m1 m2)]*Vi2Now set the kinetic energy up as a ratio, and the 0.5 and Vi2 cancel out, as well as one of the m1 values, leaving you with:Kf / Ki m1 / (m1 m2) Some basic mathematical analysis will allow you look at the expression m1 / (m1 m2) and see that for any objects with mass, the denominator will be larger than the numerator. So any objects that collide in this way will reduce the total kinetic energy (and total velocity) by this ratio. We have now proven that any collision where the two objects collide together results in a loss of total kinetic energy. Ballistic Pendulum Another common example of a perfectly inelastic collision is known as the ballistic pendulum, where you suspend an object such as a wooden block from a rope to be a target. If you then shoot a bullet (or arrow or other projectile) into the target, so that it embeds itself into the object, the result is that the object swings up, performing the motion of a pendulum. In this case, if the target is assumed to be the second object in the equation, then v2i 0 represents the fact that the target is initially stationary.   m1v1i m2v2i (m1 m2)vfm1v1i m2 (0) (m1 m2)vfm1v1i (m1 m2)vf Since you know that the pendulum reaches a maximum height when all of its kinetic energy turns into potential energy, you can, therefore, use that height to determine that kinetic energy, then use the kinetic energy to determine vf, and then use that to determine v1i - or the speed of the projectile right before impact. Also Known As: completely inelastic collision