Medium Speed- 6 washers
39.37grams x 9.82 x 1.05 meters = 398.21 j.
398.21/16.6sec = 23.99w
Airplanes and windmills fly and rotate from the wind pushing against the blades of the turbine.
It was necessary to turn the blades at an angle because otherwise the wind has to have a way to get under it and push it which makes it spin. The rotors on a windmill and the sail of a sailboat illustrate the same principle, because they both use wind to move. The sailboat sail is loose so when the wind blows on the sail it goes forward. When the wind blows on the rotors it makes it turn. Our rotor that was made of Card stock paper produced the most energy. Our other one was made of Aluminum foil. The reason why the card stock worked better is because it was bigger, stronger, and curved more. All these properties helped catch the wind more, therefore it spun better. The difference between mine and the one that made the most energy is the design. Mine was big but it was wide. Thiers was long and thin.
Tuesday, April 17, 2012
Friday, March 9, 2012
Thursday, March 8, 2012
Drew, Bret, and Tristin's Video
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Monday, February 6, 2012
Cancer Blog
5 things i learned
- I Learned about the different stages of colorectal cancer.
- I learned about the age groups that will most likely be affected.
- I learned how cancer cells are different from normal cells.
- I learned how cancer cells mult. alot faster then normal.
- I learned how how the cancer can spread to different parts of the body.
i dont really have any questions but i dont really understand how the cells dont have checkpoints.
I liked this because i got to learn about different cancers and how they affected people.
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