Physics is Everywhere Essay -- Essays Papers

Physics is Everywhere Physics is like math; it is always being used everywhere, whether we are conscious of it or not. With the use and knowledge of physics, one can take into account that knowledge to help them perform a deed more successfully and efficient. Although skydiving and weight lifting aren’t the only activities that involve physics, I feel that they are some of the most interesting and benefit seeking activities. Without the knowledge of physics, skydiving wouldn’t be as safe as it is today and weight lifters wouldn’t be able to lift five times their weight. The history of the physics of skydiving and weight lifting has been affected by implications socially and economically. Over the years, these activities have been altered due to increasing knowledge of physics, and this knowledge will continue to expand as time elapses. In 1797 the Frenchman Andre Jacques Garnerin performed the first parachute plunge from an aircraft using a basket below an open parachute, which was made of silk and solidified with supporting poles (The History of Sport Parachuting). When the first parachute was dropped, physicists didn’t have a wealth of knowledge about the physics that supported skydiving. Ever since the first drop, skydiving has been an evolving sport, as this is due to the developing knowledge of physics. Skydiving is perceived as a very risky sport in the eyes of the public; therefore, in order for the sport to continue, physicists needed to discover ways to reduce the risks involved. They were successful in doing this by developing better equipment and techniques. The economical impact of skydiving has been huge. The research involved in the design of the chute, the materials used, and the engineering invo... ...s. â€Å"Physics in Action† 4 June. 1997. 15 Nov. 2005. http://www.glenbrook.k12.il.us/gbssci/phys/projects/frig/piabycbu/pia1.html - George, Jeff. â€Å"Physics and Skydiving†. NASA. 15 Nov. 2005. http://helios.gsfc.nasa.gov/qa_gp_fm.html - Hewitt, Paul. â€Å"Conceptual Physics.† St. Petersburg Fl. 2006. Tenth Edition. - â€Å"Physics of Skydiving†. 15 Nov. 2005. http://ffden-2.phys.uaf.edu/211.fall2000.web.projects/Vlad%20Paverman/skydiving.htm - Sabra, Phil. â€Å"What is the physics involved in skydiving?† 2005. PhysLink. 15 Nov. 2005. http://www.physlink.com/Education/AskExperts/ae536.cfm - Sharrow, Dustin. â€Å"A Short History of Bodybuilding†. BMEZINE. 2 Dec. 2003. 15 Nov. 2005. http://www.bmezine.com/news/dustin/20031202.html - â€Å"The History of Sport Parachuting† BPA. 15 Nov. 2005. http://www.bpa.org.uk/history.htm

Fast food Essay

Advantages and disadvantages of fast food Food that is prepared and served quickly is termed as ‘fast food’. Fast food such as McDonald, KFC, Pizza Hut, Burger King and others already suits perfectly into the fast paced life of a modern era. There are about 400 KFC’s restaurant, more than 150 McDonald’s restaurant and about 50 Burger King’s restaurant in Malaysia. Despite all the debate about the advantages and disadvantages that fast food has, the industry is flourishing. The most evident advantage of fast food is that it saves time. At the end of a hard-working day, when one returns home all tired and hungry, there is nothing better than getting a ready meal such as pizza or burger. Besides time, cost saving gives fast food an edge over the meal prepared in the kitchen. If one lives alone, then it is cheaper to buy a meal at the supermarket instead of cooking it at home. Usually, fast food is higher in soya, fat, sugar, oil, fried meat, salt, cheese, mayonnaise and obviously calories. In fact, fast food is more unhealthy than home-cooked meals, because it contains higher amounts of unwanted nutrients like salt, fat and various types of additives (artificial chemicals). The disadvantage of fast food is it will cause obesity in population, high blood pressure, strokes and related diseases of the heart. Nowadays, fast food restaurant becomes a good place for youngsters to hangout with friends and peers. This is a factor that is making a number of families spend less and less time together. As a result, relationship between family members become bad. Fast food has its own pros and cons. If we making some smart choices while placing the order for fast food, we can definitely minimize the drawbacks of fast food. Salads are a smart choice. If you could choose between the fried and boiled options, order the boiled preparation. Avoid ordering carbonic drinks when you are thirsty, go for fruit juices, low-fat milk, diet soda.

Seven Concerns of Science Teachers