Soda bottle rocket :: essays research papers

Soda bottle rocket Purpose The students will investigate the effect of the rocket length upon the distance of flight. The students will also investigate the mass upon the distance flight. Background The students will proof Newton's third law of motion states that for every action there is an equal and opposite reaction. Newton's third law also applies to rockets. A rocket gets its lift from the gases pushing out of its tail. The force of the rocket pushing on these gases is the action force. The gases exert an equal but opposite force on the rocket, which forces the rocket up, this is called the reaction force. According to the original guide sheet, the two items NASA will be evaluating the rocket on will be distance flown and time aloft. A two liter bottle with a cone and fins. The time is measured by seconds that the bottle flays, starting when it lives from the launch pad until it rites the ground. The distance is how far it flew. The motion will be projectile. The average velocity will be the total distance of rocket sting measured. The average speed will be the total distance of rocket flight measured in meters and total amount of time aloft measured in seconds. The altitud e will be measured by an altimeter. The acceleration will speed up and change direction. The force can be the gravity. The kinetic energy will be the mass and velocity. The potential energy on the launch pad. Newton’s first law is about the state of motion of an object does not charge as long as the net force acting on the object is zero. His second law is about the acceleration of an object is equal to the net force acting on it divided by the object’s mass. Newton’s third law is whenever one object exerts a force on a second object, the second object exerts an equal and opposite force on the first object. The momentum is mass Ãâ€" velocity. The kinetic energy is the mass Ãâ€" velocity. Momentum is a property of any moving object. For a slow moving object it is given by the mass times the velocity of the object. For an object moving at close to the speed of light this definition gets modified. The total momentum is a conserved quantity in any process. Weight is the vertical force exerted by a mass as a result of gravity.

Recruitment and Employment Essay

1. Reflect on key messages you learnt about recruitment and employment for university students in the session. After listening to the sharing session by CAIO, I found that there are two main key points in recruitment for university graduates. The first key point is that students can always apply or work in the field that is not their professions, though the career path will be more challenging. Vanessa shared a few examples of the past students’ experience in finding jobs, for instance, students majoring in engineering during the 3-years university life turned out to be an accountant; and a student who was in language study finally became a flight attendant. Listening to these sharing was very inspiring and encouraging as they gave me insight into my career path. Although I am majoring in language study, I do not aim at working as a translator or an educator. Instead, I want to work in the threatre-related industry. Therefore, after listening to the talk, I realized that it is possible for me to work in the non-language related field, only that I have to work harder, or have to face a lot of obstacles and need to make adjustment. Besides, another key message I got is that attitude and being active are the essential keys when attending interviews. After listening to Vanessa, I apprehend that showing a positive attitude during the job interview will give a better impression to the employer. When a person has a positive attitude in him/herself and is able to show that he or she is eager in getting the job, the person will probably be more active and out spoken in responding to the interviewer and is able to handle challenging questions better. Thus, it gives more confidence to the employer that the candidate is suitable for the job which thus, leading to the success in job application. Therefore, in general, I have also learnt from the session by CAIO that having a positive attitude and being outspoken and active in job interviews increase the chances of being employed.

BOOK 1 THE PIANO HANDBOOK In this book...

BOOK 1: THE PIANO HANDBOOK In this book McCombie explains how Bartolomeo Cristofori changed a Harpsichord in to a piano over three hundred years ago. McCombie goes on describing how when Cristofori was angry and frustrated he banged on the keys of the Harpsichord. Cristofori found that they didn’t respond with satisfactory crashing chords. By the year 1700 Cristofori changed the Harpsichord so that he could use two strings for each note and a set of leather covered hammers to strike them. He then developed a key mechanism to control the force of the hammers. McCombie uses a lot of illustrations to describe the mechanisms within a Harpsichord and a piano. In the next chapter talks about buying a†¦show more content†¦Closson in the following chapter talks about how the piano came from two geniuses; Cristofori and Erard. He explains how they perfected the Clavichord and the Harpsichord into an instrument of greater sonority, one that could be heard in larger rooms. The Clavichord is basically a dulcimer with a keyboard and the Harpsichord came from the psaltery, which is like the Dulcimer, but its strings are plucked by the fingers rather than being struck. Closson uses a few illustrations to describe the different mechanisms in the Harpsichord, Clavichord and the piano but mostly uses photographs to show each instrument and the way that they have developed throughout the years. I think that this book is aimed at people that have some basic knowledge on the piano. It has got pieces of music for readers to try on the piano, although I did not find quite as useful as Book 1. BOOK 3: GREAT PIANIST SPEAK FOR THEMSELVES This book is about thirteen pianists’. The author writes predominantly about their lives and how they first got interested in the piano. The article is written in a journalistic manner. The first pianist that the author interviews is Claudio Arrau. She spends much of the time telling the reader how she was greeted at the door and ushered down a short flight of stairs. She goes into great detail in trying to set the scene in the