Saturday, January 25, 2020

Tennis Ball Investigation :: Papers

Tennis Ball Investigation Aim: Investigate the factors that affect the bounce of a tennis ball. Key factors (variables): 1) Height of drop 2) Surface of bounce 3) Gravitational pull 4) Room temperature/ball temperature 5) Weight of ball 6) Material of ball 7) Brand of ball 8) Age/wear of ball 9) Size of ball 10) Force of drop/push How the key factors will affect the bounce: 1) The higher the drop the higher the bounce 2) The harder the surface the higher the bounce 3) The weaker the gravitational force the higher the bounce 4) The warmer the ball the higher the bounce 5) The lighter the ball the higher the bounce 6) Discontinual-unknown 7) Discontinual-unknown 8) The newer the ball the higher the bounce 9) The smaller the ball the higher the bounce 10) The more force put into the drop/push the higher the bounce I have chosen to investigate 1) Height of drop. Prediction ========== [IMAGE] I believe that the higher the height the ball is dropped from the higher the bounce, because when the ball is lifted the higher it is lifted the more energy is needed to lift it. Therefore more energy is converted from chemical potential energy in the body, to kinetic energy when the ball is being lifted, to gravitational potential energy (G.P.E) when the ball has been lifted to the height of the drop. The more G.P.E the ball has a the start of the drop (point A), the more energy is converted to kinetic energy while the ball is dropping and then to elastic potential energy (E.P.E) while it is static on the floor (point B). At this point the ball looses a percentage of its energy to sound and heating the floor. I know that it is a percentage of its energy that it looses rather than a fixed amount because I know that the more energy the ball has the louder the

Friday, January 17, 2020

American Identity Prior to the Revolutionary War

Early American Identity Robert Zimmermann Madrigal During the time prior to the revolutionary war, there was a mixed sense of identity within the colonies. Some of the colonists saw themselves as English citizens, while others saw themselves as Americans and wanted a free, self governed nation. The first actuall sign of American identity was in 1754 when Benjamin Franklin proposed the Albany plan, as represented in Doc. A. Even though his proposition was denied it still showed that people were starting to take the idea of being â€Å"American† into account. In Document B. Edmund Burke shows his resentment of how American is being governed. Is there a single trait of resemblance between those few towns, and a great and growing people spread over a vast quarter of the globe, separated from us by a mighty ocean. † He says that he doesn't believe that the colonies should be ruled by a nation that is so different and so far away. â€Å"The eternal barriers of nature forbid t hat the colonies should be blended or coalesce into the mass†¦ of this Kingdom. † He again states that the colonies should not be ruled by Great Britain. After the French and Indian war England was in a great amount of debt, so they started to impose taxes of the colonies.The people living in the colonies had lived in the colonies their whole lives and had never been taxed by the government before, so they were very unhappy about them. The people of the colonies protested against all of the acts that the British government had set. From the years of 1763 to 1774 the British government proposed a series of acts that imposed taxes and regulations on the people of the colonies. The proclamation of 1763 being the first of them, prevented the colonists from moving into territory past the Appalachien mountains. This was the begining of an era of protest and unhappiness. In Document C.Richard Henry Lee talks about how the colonies are all working together to fight for their libe rties against â€Å"every power on Earth that may attempt to take them away†. In Document D. The Declaration for the causes of taking up arms says â€Å"We will, in defiance of every hazard, with unabating firmness and perserverance, employ for the preservation of our liberties; being with one mind resolved to die free men, rather than live like slaves. This is saying that they wanted their freedom from oppression. In 1774 The British government issued a series of laws that later came to be known as the â€Å"Intoerable Acts†.These most impacting thing these acts did was closing the port of Boston. This only deepened colonial hostility. The other colonies provided food and money to Massachusets. Document G. is a list of the vast amount of provisions provided to the Boston relief effort. In Document H. Hector Crevecoeur reffers to America as a melting pot, where the ancestors of people are forgoten and they become new men and women. All of these documents provide the f acts needed to infer that there was a great sense of American Identity in the Americas prior the the Revolution.

Wednesday, January 8, 2020

An Overview Of Parkinson Disease - 1450 Words

An Overview of Parkinson Disease Parkinson disease (PD) is a condition consisting of many unanswered questions. What causes it? Is it a genetic disorder? How will an individual know if they will be diagnosed with it in their lifetime? The list of enquiries one might present is endless. However, before even attempting to answer any questions, it is essential to understand the disease as a whole. In order to do so, grasping basic background information as well as data on PD is necessary. Following that, discussing material regarding the science behind the disease will provide a deeper understanding when examining the subsequent etiologies, signs, and symptoms. From a historical perspective, PD was first described in 1817 by James†¦show more content†¦In order to understand the possible etiology and the signs and symptoms, it is important to first recognize the science of PD and what happens neurologically. Nolden, Tartavoulle, and Porche (2014) explain that the brain structure s affected by the disease are known as the substantia nigra and the basal ganglia. The role of the basal ganglia is to provide control of fine motor movements. What happens with PD, is there is a loss of dopamine-producing neurons from the substantia nigra which causes a deficiency in dopamine levels. Without a sufficient amount of dopamine, there are not enough chemical messages being transmitted to initiate, control, and balance movement of the target muscles. It is worth noting though, that dopamine levels decrease naturally as one ages, so symptoms could become more aggressive and prevalent the older an individual gets. Fallon et al. (2015) explains that the dying cells contain Lewy bodies, defined as protein aggregates, which allow the disease to be identified. However, it is still undetermined what all factors cause the degeneration of those brain cells and PD as a whole. PD is a disease of mostly unknown etiology; however, there have been links to various factors from environ mental influences to genetics (Galifianakis Ghazinouri, 2014). First of all, it is necessary to mention that the suspected environmental factors are hard to come by for they are merely risk factors. Nonetheless, they are still important toShow MoreRelatedIs Parkinson Disease A Disease?1290 Words   |  6 Pages Parkinson Disease Danielle West University Of Arkansas Fort Smith Medical Terminology Fall of 2015 Introduction Parkinson is a disease that is a glitch in the neurons in the brain, which frequently affects the substantia nigra. Part of the dying neurons produces a chemical called dopamine. As this progresses, the dopamine in the brain decreases. Dopamine is a chemical in the brain which helps the body regulate coordination and movement in the body. 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