... crescent, half, gibbous, and new moon. The earth rotates in its axis once a day. The earth is a sphere shaped object. Its diameter is 12,750 km (7,923miles). It takes 23 hours and 56 minutes to rotate once, which is approximately one day. The sun orbits the sun ever 365.25 days. The average surface temperature is 15 degrees. The distance from the sun is 150million km (93 million miles). The sun is 150million km (93 million miles) away from earth. It is 1.4million km (864,000 miles) in diameter. Its surface temperature is 5,800 degrees Celsius (10,472 degrees Fahrenheit). As the earth rotates on its axis the sun can only shine at one side at a time. When th ...
Words: 428 - Pages: 2
... as a YF-16 prototype back in 1972. It made it’s first official flight on February 2, 1974. A level speed of Mach 2 at 40,000 ft was attained on March 11, 1974. The production F-16A differed from the YF-16 in having a 13-inch fuselage extension to hold more fuel and the Westinghouse APG-66 radar. The wing area was increased by 20 square feet and an additional underwing hardpoint was fitted. The first YF-16 was brought out on December 13, 1973 to make its first test flight at Fort Worth and was air freighted by C-5A to Edwards AFB on January 8, 1974. It was an unintended short hop around the pattern on January 21, 1974 at the hands of the test ...
Words: 1077 - Pages: 4
... and the financial cost of schizophrenia due to direct medical costs, lost productivity and Social Security pensions is between $30 billion and $48 billion according to Federal figures (American Pychological Association (APA), 1996). There are many theories about the aetiology of schizophrenia, but research has failed to pinpoint the origins. There is evidence that environmental pathogens (for example, viruses) are involved in the causation of schizophrenia. There is also evidence for a role of hereditary influences and obstetric complications on the incidence of schizophrenia. Furthermore, psychological influences have also been suggested as important in preci ...
Words: 3889 - Pages: 15
... the outdoor burning of trash and debris. Nevertheless, pollution continued to increase as a result of the increased number of motor vehicles. Exhaust fumes from the engines of automobiles contain a number of polluting substances, including carbon monoxide and a variety of complex hydrocarbons, nitrogen oxides, and other compounds. When acted upon by sunlight, these substances undergo a change in composition producing the brown, photochemical smog for which Los Angeles is well known. Efforts to reduce pollution from automobile engines and to develop pollution-free engines may eventually eliminate the more serious problems. In the meantime, however, has driven man ...
Words: 475 - Pages: 2
... the genes that are not "turned on" at the particular time. The original genetic information, stored in a coded form DNA, is carried out of the nucleus by RNA and then translated into proteins by ribosomes. 70% of oncogenes are located in the weak points of the chromosomes-hereditary regions where the DNA molecule may break or its portions may be rearranged into new combinations. Actually most of the times, the nucleus and the DNA are constantly exposed to substances that may alter the genes. But these alterations are almost always prepared by intricate mechanism with the function of preventing havoc in the cell. But if these changes persist in a given cell, that a ...
... step. The electronic retail marketplace demands the highest attention to visual graphic design quality, coupled with the ability to construct an electronic catalog. This catalog must support multiple layouts and instant credit card transaction processing. There are certain advantages and disadvantages of trading on the net. ? One can buy each and every product sitting at home. ? It saves lot of time. ? Sometimes it saves lots of money too. For example, “ when I registered for this fall term I visited the book store and figured out that the total cost including all the books was $ 390 and when I surfed on the net, the same books I bought on the net for $ 32 ...
Words: 646 - Pages: 3
... society to China. The core of Confucianism concerned social structure. Confucius taught that a man should respect and obey those of higher rank than himself, whether they be the father of a family, or the emperor of a nation. But even with absolute obedience, Confucianists believed that men should practice restraint and benevolence in those inferior to them. At the same time, those in high status were expected to lead virtuous lives, and to set examples for those that followed them. Confucianists believed that the moral code of man was set down by heaven, and if those in positions of authority did not set good examples, then they would deposed by the f ...
Words: 1127 - Pages: 5
... around the world. The damage can be extensive; mostly due to the loss of time spent recovering the infected data. A computer virus in a system is one of the worst things that can happen to a computer user. Still, many specialists insist that it is possible to use the replication mechanism of for some useful and beneficial purposes. In this paper I will examine the question of why computer users consider to be a bad thing and why they reject the idea of having a computer virus serve a good purpose. I will also explore the military point of view with regard to . This paper is based in large part on a research paper by Vesselin Bontchev from the University of Ha ...
Words: 3907 - Pages: 15
... District, commanded by Major General Leslie R.Groves. He directed industrial and research activities at such sites as Oak Ridge, Tennessee, and Los Alamos, New Mexico (The World Book Encyclopedia 141). Here they designed to bombs that were later called “The Fat Man” and “The Little Boy”. There was later a movie named after the two bombs that showed how they were made and the experiences that came with making them. A worker was killed during the final stages of the Manhattan Project when a critical assembly of fissile material was accidentally brought together by hand. This incident, which was dramatized in “Fat Man and Little Boy”, pre-dated remote-control ...
Words: 1302 - Pages: 5
... has a potential for disease prevention. is in its formative stages, being investigated in basic research laboratories. A number of early human clinical trials have been initiated to test important concepts that have emerged in these laboratory studies. The reasoning for lies in our understanding of the genetic basis of human disease. It is probably safe to say that genes we inherit from our parents influence virtually every human disease. A composite of approximately 150,000 individual genes constitutes a human being. Several years ago, an international effort was launched to identify every single human gene. This effort called the Human Genome Project, is well ...
Words: 1437 - Pages: 6
