Spinners Investigation
Aim: To investigate how changing a feature, like using length affects the speed of the spinner.
Plan: In this investigation in testing how fast a spinner's speed is I am going to make the variable the wing length. I made a prototype spinner to observe what different types of material made a better spinner; matters that will affect the spinner are the weight of the spinner, friction, up-thrust and the gravitational pull. The bigger the surface area of the spinner the more friction there will be.
Equipment: Paper,
Paperclips,
Stopwatch,
Ruler.
In the experiment I will change the wing length 10 times and cut 1 cm off each time. I will repeat this 5 times to be certain I have
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To make this a fair test I have to use the same type of paper to make my spinner, in this case I am using graph paper. I have to keep the same amount of paper clips attached to the spinner, I also have to keep the height that I drop the spinner from (2.5 metres), and I also want to use the same stopwatch so it gives off the right time and at the right speed because other stopwatches may vary.
I predict that the shorter the wing length gets the faster the spinner is going to fall and reach the ground. I think this because the shorter the wing length the less surface area there is on the spinner and less friction and up-thrust. I am going to use a results table to record my data.
The safety aspects of the investigation I have to consider are:
· Make sure no-one is stood around you,
· Make sure stool is safe to stand on,
· Careful using scissors.
Put a label on each test tube. With a pencil, number each test tube from one to twelve.
Throughout Spunk the characters are faced with well-defined and realistic conflicts, making the story enjoyable to read. In general there are many conflicts, but looking deeper into the text you will find the issue of love; two men fight over the woman they are in love with. More specifically, Spunk the protagonist of the story battles the ‘spirit’ of Joe Kanty. Spunk seems to slowly almost go insane, for seeing bobcats to Joe’s ‘spirit’ pushing and killing him.
“Decide what you want, decide what you are willing to exchange for it. Establish your priorities and get to work.” - H.L Hunt. Spindletop was the first big oil strike in 1901, it gave a new shape to the state’s future. In fact, during World War II,Texas produced twice as much oil than Nazi Germany and Japan did combined. Oil didn’t change Texas overnight. You trusted me to find out What story should be told? After reading the documents that you gave me I decided I would do school funds,minorities in West Texas , and divorce rates.
1. In each case, is the ink a pure substance (based on your results)? Why or why not?
As I do this experiment the thing I am going to be changing is the
In this short story “The Last Spin” by Evan Hunter ,the very opening sentence is showing the unusual relationship of Tigo and Danny .And the writer personifications 'the jacket 'who is telling the Danny that Tigo is his enemy. Tigo was wearing green silk jacket with orange stripe on each sleeves and danny was wearing blue and gold jacket, is representing that he belongs to a gangs. As the gang guys knowns ,as of their symbol or their appearances.
Planning and Method. Any experiment needs variations as well as fairness to be a true success. The two variations I will include in this experiment shall be: 1) The number of paperclips on the bottom of the helicopter. 2)
0,74 0,87 1,00 0,49 100... ... middle of paper ... ... some groups had got different leakage of the pigment in the test tubes with water.
If I were using a cut out of length 1cm, the equation for this would
In my experiment, I will use an overall volume of 50 cm³ of 2moles of
1. I will first take my resting pulse rate by placing the tips of my
Throughout the past century, investigations of quantum and particle physics phenomena have proven to show the most significant concepts and ideas in the physical and sub-atomic world. However, the discoveries yet to be made are endless. One of the most fascinating concepts in the sub-atomic universe is the idea of spintronics. Spintronics is the quantum study of the independent angular momentum (not to be confused with the orbital angular momentum of the electron) of a particle, typically that of an electron (Introduction). An electron is a fundamental particle, with a negative charge, and is independently studied in the process of spintronic devices. The spin angular momentum of electrons is ±½ћ. Devices that use the properties
Spintronics is based on manipulating the flow of spin polarized current in metals and semiconductors. Introducing spin degrees of freedom and charge into the present semiconductor electronics at nanoscale level is a very important issue for realizing novel devices. Research is being carried out for the development of magnetic random access memories and nonvolatile logic applications by extensively studying novel spin based semiconductor device structures and magnetic material semiconductor hybrid structures. We can create spin polarization using many methods, that will lead to hole induced ferromagnetism in the case of InAs and GaAs alloyed with Mn [1]. This made it possible to integrate ferromagnetism with existing nonmagnetic Ill-V heterostructures. Carrier concentration has been modulated using insulating gate field-effect transistor structure and we were able to realize reversible electrical switching of the ferromagnetic phase transition and coercive force [1]. Ferromagnetic semiconductors may prove to be useful in developing spintronic devices that combine magnetization switching with other spin-related effects, once the transition temperature of these materials reaches well beyond room temperature. An overview of semiconductor spintronics has been presented here: