Potential Energy and Solution - 1052 Words

Work and Energy Worksheet Section 1 Work: 1. A person pulls a toboggan for a distance of 35.0m along the snow. The force in the rope (tension) is 94.0N. How much work is done on the sled? Solution: W= Fd W= 94.0N x 35.0m W= 3290 Nm or J 2. The cable of a large crane applies a force of 2.2x10^4N to a demolition ball as it lifts it vertically a distance of 7.6m. a) How much work is done on the ball? b) Is the work positive or negative? Why? Solution: A.) W=( 2.2x10^4N) ( 7.6 m) W= 1.6x10^5 Nm or J B.) Positive, because the force on the system is positive. 3. When spring arrives a woman packs her winter clothes in a box and lifts it at a constant velocity to the top†¦show more content†¦What is the average force acting on the car from the drift? Solution: The work done equals the change in kinetic energy. Thus W= ∆KE=  ½m (v(f)^2 – v(i)^2) = (0.5) (5.0x10^3kg) x (8.0m/s – 20.0m/s)^2 = 62.5kg x -336m^2/s^2 W= -2.1x10^4 J Section 4 Conservation of Mechanical Energy: 14. A 2.00kg rock is released from a height of 20.0m. Ignore air resistance and determine the kinetic energy, gravitational energy and total mechanical energy at each of the following heights: 20.0m, 15.0m, 10.0m and 0m. Solution: @ 20m: potential energy is 2kg * 20m * 9.81m/s2 = 392.4joules, KE = 0 @10m : PE = 2kg * 10m * 9.81, and KE = 392.4/2 = 196.2 joules @ 0m : PE = 0, And KE = 392.4 joules Section 5 Power: 15. The building under renovation is 35m away from the construction supply. The laborer delivers the 9kg of sand to the building in 17 min. Determine the power of the laborer in watts. Solution: W= (9kg) (9.8m/s^2) (35m) = 88.2 N (35m) W = 3087 J / 17min convert min to sec. = 3087 J / 1020s P = 3.03 W PROJECT IN PHYSICS Submitted to: April Joy Ando Submitted by: Al khaleed Hassan amp; Fritzie RoseShow MoreRelatedCcea as Biology Coursework: an Investigation to Find the Water Potential of Potato and Carrot Tubers in a Sucrose Solution over a 24 Hour Period1394 Words   |  6 Pagesinvestigation to find the water potential of potato and carrot tubers in a sucrose solution, of concentration 0.00 – 0.50Mol, over a 24 hour period Interpretation Written Communication C1 From our graph it can be seen that the concentration of sucrose solution is 0.18 M at 0% change in mass for the potato and 0.355 M at 0% change in mass for the carrot. I will use these values to find the solute potential by using the calibration graph. I will work out the water potential by using the equation,Read MoreThe Effect Of Concentration On The Electrical Energy Output Essay1386 Words   |  6 Pagesthrough a redox reaction. The combined electric potentials of two metals in the metal sulphate solution of the electrolyte generate voltage. If the concentration of one of the electrolyte solutions is increased, the number of cations and anions increase (depending on which electrolyte you increase), which increases the overall voltage potential of the cell. Equilibrium conditions are not achieved when a current flow in the circuit. The cell potential will usually be reduced by various mechanisms;Read MoreChardakov method1369 Words   |  6 Pagesthe water potential of potato tis sue? Introduction All cells require essential materials to ensure their survival. Chemical, physical, and biological processes are used to move these materials inside of cells. Similar processes move waste materials outside of cells. These processes can be passive, occurring as a result of basic physical laws and requiring no outside energy from the cell or they can be active, requiring energy expenditure. Since all molecules possess kinetic energy (energy of motion)Read MoreThe Current Demand For Energy1237 Words   |  5 Pagesntroduction Europe experienced two energy crises during the 1970s, which led to escalating demand for energy resources (specifically, oil) that could not be adequately supplied (Bonny, 1987; Donatos Mergos, 1989). This led to a decrease in economic activity that reflected as a decrease in the demand for energy in the form of oil. Alternative energy sources needed to be considered in order to maintain the economic activities of society without further depleting the natural resources. Besides theseRead MorePhysics Of Heat And Energy Transfer Essay1169 Words   |  5 Pagesand energy transfer, more specifically how heat transfer relates to energy changes within a system. The laws of thermodynamics were developed to predict and outline behaviors of thermodynamic processes (5). The First Law of Thermodynamics states that â€Å"the change in a system s internal energy is equal to the difference between heat added to the system from its surroundings and work done by the system on its surroundingsâ⠂¬  (5). The idea behind this is conservation of energy, meaning all energy in andRead MoreThe Current Demand For Energy1224 Words   |  5 Pages1. Introduction Europe experienced two energy crises during the 1970s, which led to escalating demand for energy resources (specifically, oil) that could not be adequately supplied (Bonny, 1987; Donatos Mergos, 1989). This led to a decrease in economic activity that reflected as a decrease in the demand for energy in the form of oil. Alternative energy sources needed to be considered in order to maintain the economic activities of society without further depleting the natural resources. BesidesRead MoreThe Current Demand For Energy1238 Words   |  5 Pages1. Introduction Europe experienced two energy crises during the 1970s, which led to escalating demand for energy resources (specifically, oil) that could not be adequately supplied (Bonny, 1987; Donatos Mergos, 1989). This led to a decrease in economic activity that reflected as a decrease in the demand for energy in the form of oil. Alternative energy sources needed to be considered in order to maintain the economic activities of society without further depleting the natural resources. BesidesRead MoreA Major Area China s Air Pollution Effects On The Environment1568 Words   |  7 Pageshas pervaded through the air to neighboring countries including Korea, Japan, and some parts of North America (Air pollution in China). This causes some other countries to worry about China s ignorance towards the problem, because it has large potential to pervade the world. On the other end of the effects, the heavy air pollution in China causes a variety of health problems. The air pollution in china greatly increases the cases of cancer, respiratory diseases, chronic obstructive pulmonaryRead MoreAnalysis On The Energy Modeling Software1120 Words   |  5 Pagesaccurately measure the results of our engineering solutions, we have created a list of metrics for each objective that will allow us to evaluate if the retrofits are a success or failure. This will let us determine if the engineering objectives are being met and how well potential designs are performing. The first constraint that must be satisfied is for energy retrofits to not increase the amount of greenhouse gases produced by Sechrist Hall. The energy modeling software eQUEST will be used to modelRead MoreObserving Diffusion And Osmosis On The Rate Of Diffusion Across A Cell Membrane1384 Words   |  6 Pagesmolarity of the solution affect the diffusion and osmosis across a semi-perme able membrane? *Hypothesis-The solution will move from an area of low water potential to an area of high water potential and the higher the molarity, the more water will move into the membrane. Procedure 3(Observing Osmosis in Living Cells)- *Purpose-How do different solutions and water potentials affect the movement of water across a cell membrane? *Hypothesis-The water will move from an area of high water potential to an area

Parent Observation and Interview - 2056 Words

For the parent observation and interview I had to really think about who to choose because of many reason: such as not wanting to offend someone or a person not being as reliable as others. In the end I decided to observe my mother and sister Tiana. My mother is a third generation immigrant to the united states with only two female children. She had me when she was nineteen years old in Guyana. My sister was born seventeen years later in England to her current husband, making Tiana his fifth child and second girl. At the time of the interview due to certain differences they are no longer together and living in separate countries. At the time of the interview it had been exactly one month after her second birthday, make her in the prime of what is describe as the terrible two. I select them because of accessibly, also because with her second child she had more complications and issues. Being that the age differences between her two children are so far, I expected some difference in th e way she has chosen to raise them. In order to do a complete observation, the observation was done over a one day period lasting from the start of seven o’clock Monday morning until ten p.m. When the interview started my mother had just finished working an overnight shift at her job and Tiana had spent the night with me. After returning home, my mother began to get Tiana ready for her day at school in which: she proceed to make a bottle, dress and feed her at the same time. By eight o’clock theyShow MoreRelatedBusiness Research1332 Words   |  6 Pagesdata is the opinions of a certain group. This research also captures the why, would, and how the target audience react to certain issues, situations, and/or products. The data is really useful and in-depth and used primarily by focus groups and interviews. Quantitative research data is truly about numbers, statistics. Therefore, the researchers have to make an effort to contact as many people as they can to get a realistic conclusion of what the surveyors are attempting to convey to the researchersRead MoreMethods Used in Collecting Data1608 Words   |  6 PagesSouthern District. The case study allowed the researcher to gain in-depth knowledge of the problem. The behavior of parents of children affected with speech and language impairment was analyzed using the case study. The case study was of importance as it gathered first hand information at the same time minimizing the chances of distortion. The researcher was able to compare both parents with/without children affected with speech and language impairment as well as some of the school teachers and districtRead MoreAnalysis Of With No Direction Home By Marni Finkelstein1133 Words   |  5 Pagesgroup Finkelstein studied were street kids no older than the age of 20. Finkel stein did not interview kids over 20 because he said kids under the age of 21 rely on their families for social and financial support. He studied kids under 20 because those groups are most vulnerable to the lack of familial support and wanted to determine whether it will affect their self behaviour. These interviews and observations were constructed in the East Village of New York. The kids interviewed were from all overRead MoreThe Profession Of A Child Care Center Director1112 Words   |  5 Pagescareer and determine if the professional career is a suitable fit for you. In this paper we will explore the educational requirements as they relate to the profession of a Child Care Center Director. We will also discuss the results of an interview and observation conducted on a person who is currently employed in this professional career. Bright from the Start Georgia Department of Early Care and Learning is an organization that is responsible for providing the requirements to open and maintain aRead MoreGender Stereotypes In Disney1523 Words   |  7 Pagesarray of racial, ethnic and socioeconomic backgrounds. These participants included thirteen Hispanic, ten Caucasian, one Asian, and seven mixed race children. Data from this research experiment was collected through pretend play observations, semi-structured interviews, and parent questionnaires, in order to reveal the child’s stereotypical beliefs and gendered behaviors when acting like a princess. Thematic analyses revealed four common themes that appeared in princess play: beauty, focus on clothingRead MoreA Research Study On A Participant Observation Duncan ( 2004 )1327 Words   |  6 Pagesexperience to larger theoretical concepts; and researchers inability to defend against well-structured critiques whereas they still making claims to knowledge (Park s 1997). Also, Self-reflection serves as one of the major challenges in doing participant observation Duncan (2004). Autoethnographic investigation has not yet enjoyed the popularity, respect, and admiration of its ethnographic predecessors. With its use of self as a source of data, it has been criticized for being self-indulgent, introspectiveRead MoreQuestions On The Team Spirit954 Words   |  4 PagesBerkeley in the followed up fieldwork to interview students in different majors.    2. Overall, it was a smooth and fun process. We adopted the strategy of â€Å"diverge + converge† to combine teammates’ observations. In the diverge stage, everyone freely shared his or her observations, feelings, and interpretations. Other teammates shared their feelings and interpretations on others’ observations to build up. In the converge stage, we combined similar observations and added details into each one of theRead MoreThe Effects Of Technology On Classroom Practices And Student Outcomes1564 Words   |  7 Pagesproposed research. The department may require a formal ethical clearance to be obtained from a Research Ethics Committee prior to the commencement of the study. The researchers would have obtained informed consent from the principal, teachers, students, parents and any other stakeholders from the school where the research was being conducted. When seeking informed consent, information about the â€Å"purpose, methods, demands, risks and potent ial benefits of the research† (NHMRC, 2015, p.10) should have beenRead MoreFactors Influencing Women s Participation1582 Words   |  7 Pagesparticipant observation, interviews and autoethnography to document the factors influencing women’s participation in sports. This was later categorised and sorted into the facilitators and obstacles to women athletes’ participation in sports. Participant observations of consenting participants, occurred before, during and after games and training sessions of teams and individuals. This normally occurred between 3:00pm - 6:00 pm on match days, and 4:30 pm- 11:00 pm on training days. Interviews transpiredRead MoreFactors Influencing Women s Participation1407 Words   |  6 Pagesparticipant observation, interviews and autoethnography to document the factors influencing women’s participation in sports. This was later categorised and sorted into the facilitators and obstacles to women athletes’ participation in sports. Participant observations of consenting participants, occurred before, during and after games and training sessions of teams and individuals. This normally occurred between 3:00pm - 6:00 pm on match days, and 4:30 pm- 11:00 pm on training days. Interviews transpired

Women s Roles During The 19th Century - 1448 Words

From the early beginnings of civilization to the 19th century, women were viewed as breeding objects to their husbands, and they were caretakers of the house who were responsible for the cooking and cleaning in the residence. They were also accountable for taking care of children, making dinner for her husband, and throwing lavish parties that others envied. When the American Revolution began in 1765, women s roles began to change drastically. Men had to fight against the British, so women left the safety and security of their traditional roles to serve their country, and perform their usual duties. During the Revolution, women were given roles in the military as â€Å"camp followers†, snuck into the army disguised as a man, and some women†¦show more content†¦An example of this would be Abigail Adams and the Daughters of Liberty. The Daughters of Liberty, a secret organization composed of women, believed in the unfair taxation of the colonists and women responded by non- violent boycotts. The Tea Act caused a terrible reaction throughout the colonies, and women refused to buy and drink tea to support the colonists’ efforts to remove the British. A source stated, â€Å"Although many colonists continued to refuse to drink tea out of principle, many others resumed partaking of the beverage, though some of them salved their conscience by drinking smuggled Dutch tea, which was generally cheaper than legally imported tea.The American consumption of smuggled tea hurt the finances of the East India Company, which was already struggling through economic hardship. Although it was a private concern, the company played an integral role in Britain’s imperial economy and served as its conduit to the riches of the East Indies† (History.com Staff). Another example of how the women boycotted was the Homespun Movement. Instead of buying clothes from British products, women hand-spun clothes themselves which provided clothing and blankets to the soldiers during the cold winters. Next, women found illegal ways to help fight in the war. At this time females could not fight or join the army, but some bold and courageous women seized the challenge. Women traded their dresses andShow MoreRelatedWomen s Role During The 19th Century1672 Words   |  7 Pagespast, men and women are â€Å"equal†, but realistically speaking there will always be certain standards set for women that will always differentiate from those set for men. The change in women’s role in the 19th century showed improvement because they began to speak up and refused to be silenced until their voices were heard. This made a deep oppression in the history and lives of women for years to come, but there will always be a standard set by men for women to overcome. The way women are seen todayRead MoreWomen s Roles During The Early 19th Century1836 Words   |  8 Pagesthe case many years ago prior to 1920. In fact, women or people of color were not allowed the right to vote. Nevertheles s, over time the roles of women began to change and with changing roles, women began to be more aware of their rights, thus began to fight for equality. Without the beginning of woman’s suffrage and early women reforms done in the early 19th century, the right of women to vote could have never been successful; changing roles of women from the beginning of the colonization age leadRead MoreThe During The 19th Century902 Words   |  4 PagesThe events in the 19th century had changed the lives of women and blacks completely. It was an age where the impact of the industrial revolution caused a sharp differentiation between the gender roles, especially of the upper and middle classes. In 19th century, appeared the events such as African American Civil Rights Movement, Civil War, and The Women’s Rights Movement had put women and blacks’ role to a new level. During the Civil War, women stepped out of their domestic domains to support theRead MoreAnalysis Of Gilman s The Yellow Paper 907 Words   |  4 PagesGilman had created two pieces during a time era in which women were trying to revolutionize the ideology behind their goals and what they’re expected to be. The 19th century is often equated to the domestic ideology that involves women to take on specific gender roles such as being a housewife and obeying their husbands every request. This ideology strained them of their sexuality; strained them of their liberation. Women during this time period pushed for different roles that doesn’t involve the houseRead MoreWomen and Work in the 19th Century Essay920 Words   |  4 PagesDuring the 19th century, change was in the air. Industrialization, involving the movement of labor and resources away from agriculture and toward manufacturing and commercial industries, was in progress. As a result, thousands of women were moving from the domestic life to the industrial world. During the 19th century, the family economy was replaced by a new patriarchy which saw women moving from the small, safe world of family workshops or home-based businesses to larger scale sweatshops and factoriesRead MoreWomen s Rights For Women1465 Words   |  6 PagesWomen’s rights in America in late 1800’s women’s right to vote women in medicine and the equal rights for women are the 3 main points that were big in the 1800’s. Women’s rights to vote women couldn’t vote back in the late 1800’s. Women had to stay home and take care of the children, cook and clean the house and when their husbands get home take care of them too. Although women had to do all those things they were not paid equal for the things they did. 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In her book, A Room Of One’sRead MoreVirginia Woolf Sentimental Education Essay1244 Words   |  5 PagesSociety on Relationships molded by Economic and Social Status during 19th Century Europe During the turn of the 19th century in Europe, doctrines such as the napoleonic code, and earlier writings from philosophers like Rousseau continued to have a direct impact on how women were seen and treated within society. Virginia Woolf, a 20th century author wrote on how these writings changed societies perception of women and what their roles should be in the eyes of men. In her book, A room of ones ownRead MoreFrankenstein Pursuit Of Knowledge Essay1673 Words   |  7 Pages Among the many themes explored in Mary Shelley s timeless classic â€Å"Frankenstein†, the one I find to be most relevant and the one that truly resonated with me was the dangers that stem from the pursuit of knowledge. This theme resonated with me for many reasons because, while the pursuit of knowledge has allowed humankind to exert and enjoy unparalleled and unprecedented power over the animal kingdom and the world itself, it’s a seemingly benign aspect of human nature that can paradoxical ly renderRead MoreA Doll’s House by Henrik Ibsen Essay961 Words   |  4 Pagesprotagonist of the story, represents the typical women in society during that era. The audience’s first impression of Nora is a money obsessed, childish, obedient house wife to her husband, Torvald Helmer. However, as the play progresses one can see that Nora is far from being that typical ideal trophy wife, she is an impulsive liar who goes against society’s norm to be whom and what she wants. Her husband is illustrated as the stereotypical man during the 19th century, as he is the dominate breadwinner of

Breakfast Club Analysis free essay sample

The well-known song â€Å"Don’t You Forget about Me† plays at the end of the movie The Breakfast Club, signaling not only the end of the famous movie, but also the end of the transitory group that had developed in the earlier scenes. Although movie was released over twenty years ago, high school students today can still use the labels that are examined in the movie to identify themselves in the cruel world they call high school. With the final lines â€Å"you see us as you want to see usIn the simplest terms, in the most convenient definitions,† the point of the movie finally becomes apparent; stereotypes are not accurate representations of teenagers, but instead they accurately represent who teenagers think they are. There is no doubt that students all come with labels; it is inevitable. But whether a student is a brain, a jock or a princess, they are all greatly impacted by the stereotypes and boundaries that are a part of each of their social groups. We will write a custom essay sample on Breakfast Club Analysis or any similar topic specifically for you Do Not WasteYour Time HIRE WRITER Only 13.90 / page To teenagers, being a part of a social group is huge, as portrayed in The Breakfast Club. As soon as the movie starts, viewers can decipher the cliques that each student is in. When the students are being dropped off, viewers assume which cliques each student is in by their appearances, how they respond to their parents, and how they react to coming to school on a Saturday. The most important identification of each student’s clique is seen by where they sit in the library. Much like the school cafeteria today, the students sat where they felt comfortable. In this case, it was away from everyone else in the room, with the exception of Andrew and Claire who were already in similar social groups and had similar friends. Bender eventually approaches the topic of the students’ separate cliques by asking Andrew, â€Å"Do you think Id speak for you? I dont even know your language.† The students, while all in similar situations have trouble effectively communicating because they do not really know each other. This proves how drastically different teenagers are from those not included in their immediate friend group. Humans in general, especially teenagers, are greatly influenced by their peers and the activities that their peers participate in. This means that they are also largely impacted by the stereotypes that are associated with their cliques and social groups. Stereotypes change who teenagers think they are based upon what others are saying about them. Being forced into a role can completely change who a person is or how someone acts. For example, Andrew felt genuinely bad about taping together Larry Lester’s butt cheeks,  but he was influenced by his friends and by the expectations that he thought his father had for him. These expectations can drastically impact how teenagers treat one another. At the end of the movie, the boundaries outlined earlier in the film are semi-broken. Although, Claire tells Bender that she hates her friends, she remains friends with them because she does not feel like she would belong in another clique. The boundaries that are formed from the very beginning, such as the language each teenager uses or the lunches that they have, are finally broken when Allison takes the varsity letter off of Andrew’s jacket and when Claire gives Bender her earring. Although neither of these actions is huge, and none of the students will leave their prior friend group, they are beginning to break the boundaries that separated them in the first place. And though the breakfast club may never speak to each other again, they have developed a greater sense of understanding for each other and the cliques that they are all in. While Brian, Allison, Bender, Claire, and Andy may never talk to each other again, they may reconsider how they treat someone in a different social group than them or how they perceive someone who is different than them. The cliques are still going to exist, yet the students will be able to see others for who they really are, not for who others think they should be. Whether a student is impacted directly by their friends and peers, or by the boundaries that tie them to a specific group, the fact that there mindset is shifted by these pressures is unavoidable.