To Find the Quality of Players Playing Rugby for Malvern College 1st XV.
Maths Statistics Investigation Maths Statistics Investigation To Find the Quality of Players Playing Rugby for Malvern College 1st XV Aim I will attempt during the course of this investigation to rate all of the players who played for Malvern 1st XV in the first 6 matches of the 2000 season. In order to do this I must collect the data, analyse each piece of data collected, and then devise some sort of system using a formula that will rate an individual player over the course of the season. This formula must not only calculate the player's point score for each match according to a points system which I shall devise, but also average the points score over the season taking into account time missed through injury. I will also calculate the average standard of player using the mean, and also find the standard deviation to show the average deviation from the mean. Plan In order to devise my scoring system I must first decide on the categories that I shall use for my scoring system. I have decided that there will be two criteria for assessment of a player. These criteria will be: *Time spent on the pitch + time out due to injury, divided by number of matches played to find the average time spent on the pitch. *Coach's assessment percentage score for each match, taking into account position and what is required. I will add up the score for each match and divide by the number
Nuclear Magnetic Radiation
Nuclear Magnetic Resonance Introduction Nuclear Magnetic Resonance, or NMR, is a technique used for the spectroscopic analysis of matter. A Swiss physicist named Felix Bloch developed NMR in the 1950s. NMR works by placing the substance in a strong magnetic field that affects the spin of the nuclei. Only a handful of common elements posses the property known as spin, which is essential for NMR to work. A radio wave passing through the substance repositions the nuclei. Once the wave is turned off, the nuclei release energy that contains information about the substance. This information can be translated into an image by using computer techniques. During the 1980s, NMR was seen as a useful tool for obtaining more precise images of the human body. NMR is accurate and provides doctors with a better idea of what is happening inside someone's body. The images produced are clear and concise, cutting down on the amount of radiation the patient needs to be subjected to. These images are far more accurate than those produced using ultrasonic or CAT scans. NMR is unsurpassed when taking scans of the head and neck. The clarity of images produced has resulted in an increased use of NMR techniques. As a result, NMR is now more commonly referred to as MRI (Magnetic Resonance Imaging), in order to avoid the negative connotations of the word 'Nuclear'. In fact, NMR does not
We have been given six equations, and have been asked to investigate them. To help my investigation, I will be drawing six velocity/time graphs. The equations are:
Graphs Coursework Introduction We have been given six equations, and have been asked to investigate them. To help my investigation, I will be drawing six velocity/time graphs. The equations are: A. V = 5 where 0 ? t ? 4 B. V = 0.5t where 0 ? t ? 9 C. V = t+2 where 0 ? t ? 7 D. V = 2t where 0 ? t ? 3 and V = 6 where 3 ? t ? 5 E. V = 8t-t2 where 0 ? t ? 8 F. V = t3 where 0 ? t ? 3 Aim When given the velocity and the time it would seem the obvious thing to find would be distance travelled, and the acceleration where appropriate. By using a formula I have learned in maths (distance = speed X time) I will be able to find the distance travelled for each equation. Please refer to the appropriate graphs for each equation. Here is a diagram of the axis of a velocity/time graph. Equation A First I must work out what units the distance will be measured in. By using the diagram we can write m/s X s = distance. This means distance is measured in metres because the seconds will cancel each other out - m/s X s = m. The first equation is A: V = 5 where 0 ? t ? 4. As V is constant and has no relationship with 't', I do not even need to draw the graph to know that '5 X 4' will equal the distance, which is 20 metres. I can draw a table of results to help me plot the graph: Time 0 2 3 4 Velocity 5 5 5 5 5 When looking for the acceleration,
Design of Customer Input Form
Design of Input/Output Design of Customer Input Form Design of Sports Hall Reservation Form Design of Menu System Design Of Customer Report (Sorted by surname) 102 ADG Brown 116 High Street, 028 £120 Family 5 Belfast 9012 5477 125 SR Collins Farm house, Farm 028 £60 Single 2 Street, Saintfield 9154 4625 116 AJR Drennan 12 Portaferry Road, 028 £40 Single 4 Greyabbey 4277 8514 Reservation List 01 15.00,12/11/02 02 12.00,15/11/02 12 11.00,05/01/01 Member Labels These can be printed onto a page of labels, which can then be stuck to envelopes and sent out to the members of the gym. These addresses can be retrieved from many sources, so you could either use all the members or create a query and search for a specific reason to send out letters. Data Checking & Controls I will be using many validation checks in my system, including input mask, length checks and character type checks. Input Masks This is a way of ensuring only the correct characters are input into the field, and also in
Electromagnet Investigation
What is a electromagnet Planning An electromagnet consists of an iron core with a wire wrapped round it and current flowing through the wire A conductor carrying a current (I) induces a magnetic field. This due to the fact that moving charges induces magnetism and the current consists of moving (e ) What are they used for? Electromagnets are widely used in technology and are the essential components of relays and circuit breakers. Electromagnets are also used in electromagnetic clutches and brakes. In some streetcars, electromagnetic brakes grip directly onto the rails. Very large electromagnets having cores several meters in diameter are used in cyclotrons, and high-power electromagnets are used to lift iron parts or scrap. This was Found From Encarta This has helped me so now I see a point in the experiment. Also people who use the high-powered electromagnet would need to know how to get it high powered. Keeping in mind current costs money so they may choose to use another way with a lower current. About Electromagnets (Core) The iron core in an electromagnet is full of magnetic domains, which are randomly pointing anywhere therefore cancelling them out. When an electric current is passed through the coil; this induces a strong magnetic field. The iron core is then placed in this field; causing the domains to point in one direction (The direction of the
Investigate the factors affecting the induced e.m.f. in a coil due to the changing magnetic field in a neighbouring coil.
The Law of Electromagnetic Induction Objective: To investigate the factors affecting the induced e.m.f. in a coil due to the changing magnetic field in a neighbouring coil. Apparatus: Two square solenoids with different sizes, a CRO, a signal generator, an ammeter (1A a.c.), two PVC covered copper wires with different lengths, a magnetic field board, an axial search coil, connecting leads, a connecting plug. THEORIES Faraday's law states that the induced e.m.f. is directly proportional to the rate of change of flux-linkage or rate of flux cutting, i.e. where is the induced e.m.f. in a coil of N turns through which a magnetic flux is passing. The proportional constant is found to be 1. Therefore, we have The magnetic flux is defined as the product of the flux density normal to the surface and the area of the surface, i.e. Therefore, the induced e.m.f. is found to be Hence, the factors affecting the induced e.m.f. in a coil due to the changing magnetic field in a neighbouring coil are rate of change of magnetic field (frequency of A.C. supply, f ), magnetic field strength (current through the solenoid, B), number of turns of coil N, the area of surface of solenoid A and the angle through which the axis of the search coil (). . Rate of Change Suppose the normal of the coil is parallel to the field, the flux linkage is given by The induced e.m.f. can be increased by
Testing an LDR
Physics Coursework - Testing an LDR based sensor I have devised a project to test the effect of a change in distance between the light source and LDR in a potential divider circuit. Ideally, it would be possible to determine the distance of any light source given it's light output in Lux, however, practically, I only expect to be able to predict the distance of a particular bulb. Background Before performing my experiment, I needed to carry out some background work to decide how I should carry it out. The following documents my background research, and the conclusions it led me to. All background research was done independently, and I came to my decision without outside help. Types of Sensor The first, and most obvious, choice for my experiment is the LDR, or Light Dependent Resistor. Light dependent resistors work by having a small area of semi-conducting material whose resistance decreases as the light intensity increases. There is an inverse relationship between the two. The majority of LDRs use a cadmium sulphide cell as the semi-conducting material. Cadmium sulphide cells are cheap, have quite a large range of resistance, and are sensitive to a variety of wavelengths of light, from ultraviolet through to infrared. When cadmium sulphide (CdS) is subjected to light, the absorption of photons excites electrons to a higher energy state. When in this higher energy state,
Investigating the Mechanics of the 100 Metre Sprint
Investigating the Mechanics of the 100 Metre Sprint In this assignment, I will be investigating the way in which an athlete run a race of 100 metre and also I will look at other different possibilities such as when an athlete accelerate or decelerate during the race. The course is a track of 100 metres in length and I decided that I would not take into account the wind variation in this model because of lack of information. So therefore I assume that there is light wind that will not affect the time. Before my research I always thought that sprinters run as fast as they can for the whole distance of the race. But in my researches using the Internet and books, I found out that sprinting is a skilful activity just like football kicking and tennis. Such activity must be practised constantly to retain or improve an athlete's level of ability. Currently the world record time of the 100-meter race is 9.79 seconds produced by Maurice Greene. I was able to work out his average speed in the following way: Average speed= 100 = 10.21 m/s-1 9.79 The 100m are a very intense and technical race. Initially the athlete should concentrate totally on his starting technique, which he has fine-tuned in training. Irrespective of the lane or adversaries, he now focuses on a smooth acceleration towards attaining his maximum speed. Once he has attained his top speed, he now relaxes totally
Maths Coursework – Artic Research
Maths Coursework - Artic Research Speed of wind - 50 km/h blowing from the west Speed of aeroplane - 200 km/h I will treat the aircraft as a particle, instant and constant speed will be assumed, take of and landing times will be ignored. The aircrafts speed will be affected by the speed and direction on the wind. As we assume the aircraft speed, wind speed and direction will be constant; we can use vector diagrams to work out how long the journey will take. I will have my first base camp in the middle. I will then place the base camp at different areas in the circle, and see how this effects the journey time. I will then work out a general formula for any speed of aircraft, wind speed and direction, so the journey time could be worked for any variables of these 3. Circle 1 - radius = 50km. First observation site - north (0?). Resultant velocity will have to act from the base camp to the observation site. 50km h-1 Observation site 200km h-1 Resultant velocity ? Base camp Angle ? = Sine ? =50 / 200 ? =1/4 ? = Sine-1 (1/4) * =11.25? This angle 11.25? can be used to work out the bearing of the aircraft. Bearing = 360? - 11.25? = 348.75? So how long would the journey take? First we have to use Pythagoras' theorem to work out the speed of the aircraft. Pythagoras' theorem is "the sum of the squares of the opposite and adjacent = hypotenuse"
Electromagnet Interference.
Report: Electromagnet Interference In this report I will look into the basis of electromagnet interferences! What is it may you think? Well never the matter because further on in this report, there would be more in-depth explanation on this topic! There will be annotated pictures which illustrate what is happening in some parts of this report so you the reader can understand it much better! What is Electromagnetic Interference (EMI)? First of all what is electromagnet might you ask? Well to put it in simple terms it is basically a live current going through an electrical wire that produces what we call a magnetic field! The term "electromagnetic" comes from the relationship between electricity and magnetism. The two forces always accompany each another. Where you have magnetism you have electricity and vice versa. Either cannot work nor exist without the other! Another occasion is when you are next to your television set and you mobile phone goes off! You should notice a noise that interferes with the sound which is what we call electromagnet interference. What Causes EMI? There are three types of causes EMI. They are inherent, natural and man made! I will now talk through how each one of these work! * Inherit: This produces noise but with any electronic equipment! A good example would be your television set making funny sounds when say a mobile phone is ring! The