Diet Coke and Mentos an Experimental Study Essay Example

Diet Coke and Mentos: an Experimental Study Paper Diet Coke and Mentos: An Experimental Study Abstract This paper describes an experiment to determine whether the diet Mountain Dew contain Phosphoric Acid or not. This experiment was held at Green River Community College (GRCC) in Auburn, Washington on May 12. 2009 at 10:30 a. m. The temperature was 52 F. In this experiment, mentos caused a eruption in a 2-liter bottle of Diet Mountain Dew erupted, thus we concluded that diet Mountain Dew did have Phosphoric Acid because it caused eruption with mentos being dropped in. Introduction Diet Coke and Mentos, when mixed, will produce a violent reaction. Same as Test was performed, then rapid effervescence appeared and eruption occurred. When mentos were dropped into the diet Mountain Dew bottle, the similar reaction was also happened. The hypothesis to be tested by this experiment was that if mentos were mixed with Diet Mountain Dew, it will not produce an eruption because Diet Mountain Dew does not contain phosphoric acid. Materials and methods Materials: * Two 2L bottles of Big K diet cola. One 2L bottle of diet mountain Dew. * Two packs of mint mentos. * A six-foot pole * A stop watch Methods: First step: Dropped 7 mentos into the first big K diet cola bottle and then recorded the time and height of the eruption. Second step: Dropped 3 mentos into the second big K diet coke bottle and then recorded the time and height of the eruption. Third step: Dropped 7 mentos into the third bottle (Diet mountain Dew. ) and then recorded the time and height of the eruption. Discussion We will write a custom essay sample on Diet Coke and Mentos: an Experimental Study specifically for you for only $16.38 $13.9/page Order now We will write a custom essay sample on Diet Coke and Mentos: an Experimental Study specifically for you FOR ONLY $16.38 $13.9/page Hire Writer We will write a custom essay sample on Diet Coke and Mentos: an Experimental Study specifically for you FOR ONLY $16.38 $13.9/page Hire Writer The hypothesis said that mentos would cause an eruption in diet mountain Dew because Diet Mountain Dew contains phosphoric acid. The hypothesis was proved by this experience. However, the eruption produced by mentos mixed with diet Mt. Dew was substantially smaller than that with the Diet Big K coke. Table 1: Results of eruption between Mentos, Diet Cola, and MT. Dew. Bottles| Soda| # of Metos| Height| Length of time| First bottle| Big K Diet Coke| 7| 5 ft| 2 second| Second bottle| Big K Diet Coke| 3| 5. 5 ft| 4 second| Third bottle| Mountain Dew. | 7| 1. 5 ft| 4 second|

Why Teenagers Act Crazy Essays

Why Teenagers Act Crazy Essays Why Teenagers Act Crazy Paper Why Teenagers Act Crazy Paper Adolescence is usually seen in our society as a period of emotional drama and troublemakers teenagers, there is a psychological explanation for this. First of all, during adolescence teenagers go through life changing events like starting to separate from their parents, trying to fit Into a social group and figuring out who they want to be and what they want to do In their lives. All of this causes a lot of anxiety, but there is a psychological reason for this: the development of the brain during this lifetime causes teenagers to experience more anxiety and fear and they have a reader time controlling this than children or adults. During adolescence the magical (part of the brain that processes fear) develops before the frontal cortex (part of the brain that controls reasoning and executive control) this means that the brain at this stage has more capacity for fear and anxiety but Is underdeveloped for calm, reasoning and moderating emotions. The magical and De frontal cortex work together in certain events, the magical responds to fear by sending an alert to the frontal cortex which re-evaluates the situation and calms down the brain if there is no danger ahead. Studies made in Well Cornell Medical College and Stanford university show that when adolescents were shown fearful faces, they had exaggerated responses in comparison with children and adults. Not only are teenagers more fearful than calm, but they are also risk takers. This happens because the brains reward center also develops before the frontal cortex, this makes teens have a riskier behavior. It has been learned that this anxiety is not easily treated with psychotherapy and also, adolescents shouldnt use stimulants because this worsen anxiety. These problems sometimes affect adolescents, even eater on as adults, causing anxiety disorders. Even though this can happen, most adolescents learn to deal with anxiety and modulate fear as they grow older and the frontal cortex matures. The brain is destined to work a certain way according to its life time, during adolescence the magical is more developed than the frontal cortex and this causes more fears and anxiety but teenagers arena t capable of moderate their emotions and stay calm. This should period of anxiety and fears be considered by adults, adolescents are supposed to go through this to learn gradually how to control fear and anxiety. In his developmental theory, Jean Pigged explains exactly what we Just discussed. To be able to learn, our brain has to go through different development processes. During the brains maturation processes (growing up), we cannot undertake certain tasks until we are psychologically mature enough to do so. Erickson divides life Into several stages, he states that adolescence begins at age 12 and ends at age 18. The basic conflict of this stage Is Identity vs.. Role confusion. It focuses In social relationships; Teens need to develop personal Identity, becoming who they want to be. According to Erickson, success leads to an ability to stay true to yourself, while failure leads to role confusion and a weak sense of self. As we have learned before, this process of finding yourself and developing personal Identity causes mayor anxiety on teenagers, but we already know that Its because of a Drain process. Personal Gulled This is my last high school year; it means that Im going through changes growing into adulthood. This changes lead to maturing, having more responsibilities and undergoing a lot of pressure regarding decisions about my future. Now that I have dead this psychological explanation to a lot of the anxiety that I may feel this year I realize I have to learn how to deal with stress, fear and anxiety to try to stay as calm as possible and successfully complete this last year of high school. I plan to give school the amount of time and focus that it needs, but also enjoy this last months to spend time with my classmates and friends that I probably wont see often after we graduate. As long as I manage correctly my time and accomplish the goals that I set for this year I will be satisfied with my results and I will be ready to enter the next stage in my life.

Terms in Strategic Planning and Capital Budgeting Essay

Terms in Strategic Planning and Capital Budgeting - Essay Example This formula is best used in analyzing the profitability of a project. NPV provides a value that when it turns positive project should be accepted, or rejected when the value is negative. A negative NPV produces a negative cash flows. NPV is also an ideal calculation when deciding on two projects, or comparing between them gives alternatives NPV is based on future cash estimates of the project that could be different from actual results and the difficulty of computing when the cash flows are uneven yearly. Another problem related to NPV is the use of discounting and selection of rate because different rates provide different values. Payback period is an accounting tool that is used to measure the time it will take to recover the original investment. The decision rule here is to accept the project if the payback period is less than projected.(Accounting Explained) This formula is easy to calculate and is one of the simplest tools for measuring profitability. It is also a good measure in ranking projects that would return money easily. For instance, the payback period of a project requiring $100 million dollars and is expected to generate a $5 million return for 5 years: Since expected cash flows are estimates, it is possible that there is a certainty that what is projected will not be the probable result. It could also suggest that there would be an uneven distribution of expected cash flow. This is due perhaps that changes in business are continuous and substantial. We should remember that in business, the product, the consumer, the competition, and the workforce today are very much different from ten years ago, and we cannot predict the outcome of the economy. In addition, this model does not take into account cash flows that occur after payback period is reached.