Bouncing balls Essay Example for Free

Bouncing balls Essay To investigate the effect on the bounce of a squash ball if its dropped when, the temperature of the ball is changed. Prediction: I predict that the hotter the squash balls are the more it will bounce. When the ball is heated the air particles inside the ball move faster so they are more likely to hit the walls (the ball is given thermal energy). This means that there is a greater pressure inside the ball, so it will squash less. When it hits the floor, after being dropped, less energy will be transferred to heat and more will be used to make the ball bounce higher. Method: Firstly I will find three squash balls that have the same dot on them so I know that the bounce will be roughly the same on each ball. Next I will fill one beaker with ice and another with boiling water. Then place one ball in each beaker leaving the third ball. This balls will all be bounced at different temperatures, from below 0i C TO 100i C.the test will be done 3 time for each temperature to get more accurate results. Then I will drop the three balls from equal heights (1M) to see how far they will bounce up again. The balls will have to be dropped from an equal height so the test is fair. This is a list of the equipment I will need:   Water   ice 2X beakers, squash ball stop watch meter ruler Key factors: There are some controls that I need to take into mind. The balls will need to be the same dot, so the bounce is roughly the same at the start of the test. The two balls that are going into the ice and boiling water will need to be in the beakers for the same amount of time. The surface that we bounce the balls on will need to stay the same and the height we drop that balls from will also need to stay the same, so we get a fair and constant result. Results table: Temperature (i C) Drop 1 Drop 2 Drop 3 Average Efficiency (%) 0i0. Evaluation: I think that my experiment went well, there were on odd results as my line of best-fit matches most of the points on the graph. If I did the experiment again I would use a web cam to look at how the ball bounces. A web cam would take pictures frame by frame so I could see exactly where the ball bounces. This would give better more accurate results. If I did any extinction work maybe I could look at different surfaces for bouncing the ball. E. g. on carpet you may get different results, more or less bounce.

The Night :: Essays Papers

The Night Characters: Moshe the Beadle— was one of the first of the Jew to be taken away that Elie knew closely. Moshe then escaped the massive ditches of death and was able to return to Sighet to tell them of what the Germans were doing. The rest of the people even Elie, thought that he had gone mad, so he pitied him. Oberkapo— was apart of the 52nd cable unit at Buna who was Dutch. He also sabotaged the PowerStation. He had stocks of arms and was found and arrested. He was tortured for weeks, but never gave names of who else was involved. He was then transferred to Auschwitz. Madame Schachter — she was one of the ladies on the train to Auschwitz that was having illusions and screaming out loud on the train that there was fire outside of the windows. Everytime she that, the other people being gullible as they were, would look out the window. They soon tired of this, so they tied her up and gagged. The ordeal continued as she was able to free herself from her restraints and began yelling again. The other men finally smacked her around a little bit to knock a little common sense back into her, as her 10 year old son watched and tried to comfort her. She must have been suffering from terrible dehydration. Akiba Drumer— He is a man that puts all of his faith into god, no matter what is happening at the moment, he believes that god will save him or protect him. He doesn’t want to open his eyes to the reality of things, where he could be the next one hanged in the middle court of the camp as an example of their relentless power over them. He even calculated that their deliverence was to be only a few weeks away, I think people began to tire of him as Elie did who realized that if their was a true god, they would have to be so many suffering like they were. Settings: Sighet— This is the town that Elie came from with his family in the country of Transylvania. It was a moderate town that was mainly Jews at the time. Auschwitz— The camp they were first taken to when they were deported from their recent country. It didn’t seem to be all that bad in the way they treated them personally, unless the camp itself killed them.

Towards an Understanding of Human Resource Management

Aim: With today’s rapid economic development, human resource is the only major success in continuing operations. In fact, my parents are engaged in furniture retail industry in south of China, Guangzhou. In the company’s daily operations, we found a lot of issues about human resource management. Employee’s demission and training, and the negative attitude become major obstacles in the way of our company’s development. Through HRM study, I want to understand what factors affect staff movement behavior and loyalty to the company, in order to deal with the staff situation in the company more efficiently. Method: In this thesis, the case study approach was used. Case study research is suitable for explanatory, descriptive and exploratory. Our research chooses two in-depth case studies that base on the interviews with human resource managers. The information that we collect is from qualitative interviews. Through loyalty and movement theory, to identify which factors are affecting staff movement behavior and loyalty to company, as well as analyze how to solute the issue in my family company. Result & Conclusions: After discussion and analysis, the study found: high wages is not the only way to retain employees. Money as reward can cost a lot, and it’s impersonal. Workplace, leadership style, enterprise potential, training opportunity and promotion space also can affect employee loyalty. According to Motivator-Hygiene Theory, to establish motivation system, exciting staff’s enthusiasm for the work. Let staff realize that the successes of the company are directly connected to their performances; staff have responsibility for company’s successes. This is a powerful way to keep employee motivated. For company development of long standing, organization should command constantly more new technology. Staff as the work of actors, to learn more work skills is essential. Employees and the company’s desire is the same. Companies focus on their own development, but also to enhance staff capacity. For development of the company, it should give staff more training and promotion opportunities. Suggestions for future research: It has to note that the limitation of this study is the small number and the limited scope of interviewees. Contribution of the thesis: In this study, I mainly find the solutions that the issues in my family company. After discussion and analysis, I am cognizant of the long-term relationship between staff and organization is important for company development. The rewards for the employee are not just money, but also can be other. That effect and help my family firm staff management.

Techniques to Overcome Mental Challenges - 545 Words

With the development of science and technology, the tempo of life is speeding up. Although people’s life becomes more convenient, more physical, mental, and social challenges follow. A mental challenge refers to the disease or condition that can affect the way people think, feel and behave. There are various mental challenges existing in people’s daily life (â€Å"Mental Health Challenges†). Among all the mental challenges, depression is the most common. Depression can be adverse to our mental health and normal life. The paper provides a variety of ways for people to avoid and overcome depression. Statistic data suggest that about 25% of people suffer from mental challenges each year (â€Å"What are †¦?†). Therefore, it is essential for people to know about the ways that can overcome mental challenges, especially the most common challenge, depression. Self-help techniques by changing the lifestyle can be an effective way to combat depression. For example, you can take part in some volunteering activities held by your community. It allows you to communicate with other people and you will feel great that you are helping others out. You can obtain satisfaction from serving and giving. Another self-help technique is to take regular exercise and often go for a walk. Exercise is a beneficial method to relieve physical as well as mental pressure. As the pace of life accelerates, people encounter much mental pressure from work and life and are more likely to feel depressed. Taking regularShow MoreRelatedSoftball Isn’T An Easy Game And Many People Make It Sound1254 Words   |  6 Pagesrequires mental thoughts and training through the athletes’ minds when doing so. Many people know that physical training for sports such as softball exist, but what most do not recognize is the mental condition required to comprehend the game and how the training makes athletes beyond equipped. 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