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uatnews:

The breadth of knowledge there is no limit because of all the things that exist outside and inside all human knowledge can be learned so that it can emerge and can be studied as a science that is able to contribute to the advancement of the modern era to the era of very forward looking.

Can not be separated from the existing activities daily life which in this case will be described in detail and hopefully can become a literature that helps to contribute to science. Understanding more about the friction of course this may sound quite ordinary and why it must be understood. During the study course, this friction becomes a trivial question because this kind of school is questionable even discussed the physics lesson. Various types of friction that surrounds the human is an event that can be used as a case study of physics learning.

To learn more about what it should be understood beforehand understanding friction. Understanding friction force or friction is a phenomenon or event that occurs when two different moving objects as well as the coefficient of experiencing the opposite direction of movement touching each other. Frictional forces can occur between two different types of material, such as friction between water and other solid objects so as to cause ausan or decrease the economic value of the object. However, the most frequently encountered is the friction between solid objects such kind seseama when sharpening a knife, the thing that happens is to do a frictional force against the metal material (knife) to the surface of the grindstone to sharpen the knife used for cutting.

(Source : gaya gesek)

Republic 2-0 over Japan in the Davis Cup quarterfinals

Czech widen the road to defend the Davis Cup title by winning two games on the first day of the quarter- final against Japan at the Ariake Coliseum , Tokyo , on Friday ( 04/04/2014 ) .

Radek Stepanek gave the first victory for the Republic after defeating Tatsuma Ito , 6-7 ( 5 ) , 7-6 ( 5 ) , 6-1 , 7-5 . The fight on hard courts or cement lasted nearly four hours .

Excellence Czech Lukas Rosol increased after win against no less stressful Taro Daniel .

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Rosol first lead by winning the first two sets . Daniel made ​​a breakthrough by winning the next two sets to force the match lasted rubber - set .

Czech Rosol ensure victory after winning two close games with a 6-4 , 6-4 , 3-6 , 4-6 , 6-2 .

Third party which took place on Saturday ( 05.04.2013 ) will play the doubles . Stepanek paired with Jiri Vesely scheduled and will face Ito / Yasutaka Uchiyama . This lineup could still change .

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Republic came to Japan without the presence of their number one Tomas Berdych injured . While Japan was reinforced two of their best single , Kei Nishikori and Go Soeda injured due to illness . (source : kompas.com)