Air force

assumed to exist in the sticking and sliding regions, respectively[42]. Most analyses have applied classical friction situation following Coulomb’s laws which is based on coefficient of friction [e.g., [55], [62]]. Frictional sliding force F is proportional to the force N normal to the interface at which sliding is taking place. This model can be expressed by: However, the above equation fails to give accurate prediction in high normal stress conditions. Several studies applied modified Coulomb…

When society breaks down, death and destruction incur. In the book The Lord Of The Flies by William Golding the effects of the breakdown of society is a major theme. Humans identities are formed when society’s rules and laws are non existent, and humans are forced to rely off of their own morals. This can be seen when Ralph’s tribe is demolished by Jack because of Jack 's different ideology . In addition, Piggy’s logic and intelligence when talking about advanced topics on the island also show…

Fireworks or gunfire? It may be difficult for some non-gun-wheedling citizens to tell the difference, but every cop knows ringing of gunfire. Miraculous patient recoveries are everyday norms for doctors, well, at least on TV. Several aspects of TV don’t depict real-life scenarios that happen in these job fields, instead they show the exciting, romanticized, alluring and often skewed, concepts of the job. Cops don’t experience shoot outs every day, half their day or sometimes more is spent on…

say the least, “Motion is the actuality of what potentially is.” (Kosman, 1969, p. 40) Although Aristotle thought long and hard specifically about planetary motion, he never answered the question of whether celestial bodies moved, and if so, by what force. Abu ‘Ali Ibn Sina, a Muslim scholar in 1000 AD, confirmed Aristotle’s suspicions by saying, “Nobody begins to move or comes to rest of itself.” (Hecht, 2015, p. 80) Almost seven hundred years later Newton will state this fact in his First Law,…

necessarily mean that there is no force acting on it. Motion can also be studied by using momentum (f=((mv-mu))/t ) as a quantity. Uniform motion is when the displacement of an object is constant with respect to time. Note that there has to be some displacement for it…

Within The Character of Physical Law, Dr. Feynman details the characteristics of nature. He describes nature as being incredibly complex, pointing to examples such as the orbits of the planets around the sun and tidal movement. Yet, he is able to describe nature as being simple. For a potential reader this can be confusing, as something cannot simultaneously be simple and complex. It is through the understanding and the application of logic that Feynman connects simple ideas to larger and more…

3.1. Growth Kinetic of strain: The growth curve of strain in both of mediums is shown in Fig. 1 (Supplementary data). It was apparent that 2 hours after nucleation of culture, strain interred to logarithmic phase and continues for 10 h in MRS broth and 12 h in PPM medium. Sonication continued in logarithmic phase in 2 h intervals. 3.2. The effect of ultrasound on growth kinetic: The growth curves plotted for the two condition (with and without sonication) (Fig. 1), growth kinetic parameters…

COMPOSITION OF UNIVERSE As we know, the Universe comprises of space, time and everything perceived to exist physically including all forms of matter and energy and interaction going on between them. Space and time are two basic correlates of universe. In these correlates there is matter and energy scattered around. There is interaction going on between matters, energies and between matter and energy on account of endless processes. These processes are governed by universal laws as explained in…

Long Jump Procedures: The participant has to stand behind the line and has to jump off of both feet and attempt to jump as far as possible while landing on both feet. The participant gets three chances to jump as far as they can, then they record their data. Advantages: This test does not take very long to do and it does not require a lot of equipment. Disadvantages: It takes some form to know how to do this properly so some participants may have an advantage over others. Validity: it is a good…

the effect of the personalized mus- cle geometry on the force generation in the lower limb. DistMo defines the model personalized with the PA ob- tained with the straight line approach, while CenMo describes the model personalized with the PA obtained with the centroid line approach. GenMo represents the model that used the generic values of the PA from OpenSim (PARF = 13.9◦, PAV I = 4.5◦, PAV L = 18.4◦, PAV M = 29.6◦). The inter-model force and moment variations between GenMo, DistMo, and CenMo…