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Realize though, that in real life, skateboard wheels have friction. In our experiments, we ignore friction Energy is measured in units of Joules. Remember that numbers without units are meaningless and will receive a deduction in points. Click on the link above for Energy Skate Park and click 1. Take some time and play with the skater and his track. Click on the buttons to show the energy graphs and the pie graphs.

These graphs show the conversion between kinetic energy green and potential energy blue. If any energy is lost, it will be shown with a red bar thermal energy lost. Reset the skater to the standard half-pipe and observe the energy bars as he moves back and forth without friction. Bold the Correct answers! Change the skater with. Is the law of conservation of energy affected by the mass of the skater? Does mass of the skater affect the magnitudes of the kinetic and potential energy?

Reset and drag the bottom on the half pipe to the bottom of the grid to set the lowest height to zero. Left click on the PhET skater 75kg and set him 5. How much potential energy does he have at 5. Create the skate paths as shown to the right. If the skater starts on the left side, will he have enough energy to make it all the way to the right side? No 4 pts Why? Because the right point is at a higher level than to the left position difference Create the skate paths as shown to the right.

If the skater starts on the left at point A, match the letter here with the following conditions: If the skater starts at the top of the ramp on the left, show how high he will be on the right side of the ramp. Try this in the simulation. Press to zoom out and increase the size of the ramp. Reset the skater and turn on the pie chart to show kinetic and potential energy. Why is he moving like he is? Press the arrow keys on your keyboard.

Through experiments in form, she highlights the dangers of lazy classification of people and experiences; her words in any medium provoke self-reflection.

In Citizen , a essay on Serena Williams finds a comfortable home alongside prose and list poems. With her employment of the second person throughout the collection, Rankine prompts her readers to enter into the very experiences she is describing, whether they are wholly familiar or not. As such, her approach is in equal measure confrontational and humanizing.

A collection of essays and stories exploring his relationship to close friends, grief, drugs, travel, and literature called How I Became One of the Invisible was put together by Chris Kraus just before his death. Through narratives that are at once breathless and directional, and full of poetic references and quotes, Rattray reveals his deep feelings for those with whom he shared his life. And so too did he treat his words, allowing us to enter into his world imbued with sensitivity.

Bluets , which began as an investigation into the color blue and its varying manifestations throughout history, became a book of prose poems. The Art of Cruelty , a personal reflection on the employment of violence in art, became a book of academic criticism.

Begun as a work of criticism, The Argonauts became a personal memoir, with its background research spilling, literally, into the margins. Created by Grove Atlantic and Electric Literature. Article continues after advertisement. She co-founded the reading series Poetry Prom which has been running since September Find her on twitter and tumblr rubybrunton.

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