Leighton Thompson Essays (629 words) - Algebra, Mathematics, Vectors

Leighton Thompson Essays (629 words) - Algebra, Mathematics, Vectors Leighton Thompson @02840928 Physics 001-09 Vector Force Table Objective: The objective of this experiment is to study vectors and compare experimental results with graphical and analytical calculations by finding a resultant force that balances out the given force so that the system will be equilibrium. Apparatus: Force table, weight holders, set of masses, rulers, protractors, spirit levels. Theory: Vectors A and B can be added graphically by drawing them to scale and aligning them head to tail. The vector that connects them is the resultant, vector R. The components (Ax and Ay) of a vector A can be calculated by projecting the length of A onto the coordinate axes as shown in figure 1. The components can be obtained by using the following equations Ax = l A l cos A Ay = l A l sinA The sign of a component gives its direction along the x or y axis. Conversely, from the components, the magnitude l A l and direction of the vector can be calculated using following: lAl = Ax 2+ Ay2 To add vectors analytically, they must be in component form. The components of a vector sum of two vectors A and B yields the components of a new vector, called a resultant vector and will be denotated by R. The components of R can be calculated by: Rx = Ax + Bx Ry= Ay + By I Procedure: Place the force table on a flat surface. Using the spirit level, make sure the force table is level, then cut 3 pieces of string 12 to 15 inches long. Tie a loop at the end of each piece of string, and attach the other end of the string to the ring. Place the ring in the center of the force table then put the strings over the pulleys that are attached to the force table. Get three mass holders, for vector A, add mass to one mass holder until the entire setup is 20 to 30g. Place this mass on the end of one of the strings looped over a pulley and set the pulley at an angle of 630. For vector, to the second mass holder, add 41g. Place this mass on the end of one of the strings looped over a pulley and set the pully at an angle of 154 0. For vector C, attach the last mass holder to the last string. Add mass to the system until equilibrium is reached. Record the values for mass and angle for vectors A, B and C in Table 1. Record the values for mass and angle of vectors A and B. Use the formulas to calculate the mass of x component and y components of vectors A and B, and calculate the mass, force, components and angle for vector C. Draw the vectors A, B and their corresponding components to scale in each space provided. Also draw the complete system of vectors A, B and C together. Compare the experimental results for mass and angle measure of vector C with the analytical calculations. Determine the percentage error. Calculation and Results A B C Mass (g) 25.0g 41.1g 48.1g (0) 63 154 305 A B C Force (N) 245.0 N 402.8N 471.4N X - component 111.2 N -362.0 N 270.4 N Y - component 218.3 N 176.6 N -386.1 N CONCLUSION The addition of two vectors (A,B) is equivalent to th e resultant vector. This was seen in this experiment when the vectors in the force table reached equilibrium.

The Joy Luck Club Quotes

'The Joy Luck Club' Quotes Amy Tan is best-known for The Joy Luck Club, a collection of vignettes  meant to show how our lives are shaped by the stories we tell. Set in China and the United States, the stories cross the generational divideas mothers and daughters attempt to come to terms with family history, relationships, and that connections between family and nations that are so hard to forge. Here are a few quotes from The Joy Luck Club. Over the years, she told me the same story, except for the ending, which grew darker, casting long shadows into her life, and eventually into mine.- Amy Tan, The Joy Luck Club, Ch. 1Your father is not my first husband. You are not those babies.- Amy Tan, The Joy Luck Club, Ch. 1Even though I was young, I could see the pain of the flesh and the worth of the pain.- Amy Tan, The Joy Luck Club, Ch. 2I was no longer scared. I could see what was inside me.- Amy Tan, The Joy Luck Club, Ch. 3After the gold was removed from my body I felt lighter, more free. They say this is what happens if you lack metal. You begin to think as an independent person.- Amy Tan, The Joy Luck Club, Ch. 3For woman is yin, the darkness within, where untempered passions lie. And man is yang, bright truth lighting our minds.- Amy Tan, The Joy Luck Club, Ch. 4Why do you have to use me to show off? If you want to show off, then why dont you learn to play chess.- Amy Tan, The Joy Luck Club, Ch. 5This house was built to o steep, and a bad wind from the top blows all your strength back down the hill. So you can never get ahead. You are always rolling backward.- Amy Tan, The Joy Luck Club, Ch. 6 I discovered that maybe it was fate all along, that faith was just an illusion that somehow youre in control.- Amy Tan, The Joy Luck Club, Ch. 7My mother had a look on her face that Ill never forget. It was one of complete despair and horror, for losing Bing, for being so foolish as to think she could use faith to change fate.- Amy Tan, The Joy Luck Club, Ch. 7I had new thoughts, willful thoughts, or rather thoughts filled with lots of wonts. I wont let her change me, I promised myself. I wont be what Im not.- Amy Tan, The Joy Luck Club, Ch. 8I was determined to put a stop to her foolish pride.- Amy Tan, The Joy Luck Club, Ch. 8Only two kind of daughters. Those who are obedient and those who follow their own mind! Only one kind of daughter can live in this house. Obedient daughter!- Amy Tan, The Joy Luck Club, Ch. 8I began to look at all events and all things as relevant, an opportunity to take or avoid.- Amy Tan, The Joy Luck Club, Ch. 9And I remember wondering why it was that eatin g something good could make me feel so terrible, while vomiting something terrible could make me feel so good.- Amy Tan, The Joy Luck Club, Ch. 9 Now that Im angry at Harold, its hard to remember what was so remarkable about him.- Amy Tan, The Joy Luck Club, Ch. 9You are busy. You want to live like mess what can I say?- Amy Tan, The Joy Luck Club, Ch. 10I saw what I had been fighting for: it was for me, a scared child.- Amy Tan, The Joy Luck Club, Ch. 10And below the heimongmong, all along the ground, were weeds already spilling out over the edges, running wild in every direction.- Amy Tan, The Joy Luck Club, Ch. 11True, cannot teach style. June not sophisticate like you. Must be born this way.- Amy Tan, The Joy Luck Club, Ch. 12I felt tired and foolish, as if I had been running to escape someone chasing me, only to look behind and discover there was no one there.- Amy Tan, The Joy Luck Club, Ch. 12Then you must teach my daughter this same lesson. How to lose your innocence but not your hope. How to laugh forever.- Amy Tan, The Joy Luck ClubIn my mothers case, this would be the first day of the lunar new year. And because it i s the new year, all debts must be paid, or disaster and misfortune will follow.- Amy Tan, The Joy Luck Club, Ch. 13 I have always known a thing before it happens.- Amy Tan, The Joy Luck Club, Ch. 14It is because I had so much joy that I came to have so much hate.- Amy Tan, The Joy Luck Club, Ch. 14I wanted my children to have the best combination: American circumstances and Chinese character. How could I know these things do not mix?- Amy Tan, The Joy Luck Club, Ch. 15Why are you attracted only to Chinese nonsense?- Amy Tan, The Joy Luck Club, Ch. 15Look at this face. Do you see my foolish hope?- Amy Tan, The Joy Luck Club, Ch. 16And now I also see what part of me is Chinese. It is so obvious. It is my family. It is in our blood.- Amy Tan, The Joy Luck Club, Ch. 16