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The color of an overheated metal piece changes levels of black and blue, this is because of the high temperature that reacts depositing the product color on the sides of the metal. This place becomes porous and can well react with the air outside forming rust and with time, the metal wears out reducing its life span (Sathiya et al, 2012).
Air flowing past the wings will exert a force on them. In this regard, lift, which is a component of aerodynamic force, will act perpendicularly to the direction of oncoming airflow. On an airplane, the lift is the force that is generated by wings and propellers to keep the craft in the air. It contrasts with drag force since the latter is the component of surface force.
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The outcomes of this report are clearly achieved since it is established for objective number one that the velocity around a bend differs with the frictional conditions and radii of the bend. These results are further indicated in terms of easy translational graphs that are shown in the sections above.
Typical applications of the steel samples tested include manufacture of automobile bodies, bridges, structural shapes as well as pipelines for low carbon steels. Manufacture of machine parts, gears and railway tracks for medium carbon steel and production drills, cutting tools as well as surgical tools for high alloy steels.
Fluid flow in pipes has been found to be affected by such factors as the physical traits of the fluid, velocity, changes in temperature, pipe parameters (inner diameter, internal pipe roughness, and length), the position of discharge and supply, number of fittings such as valves, entrance and exit conditions of the pipe and the pipe layout.
In the renewable energy field, it has been established that the field of fluid mechanics is not only a subsidiary to such power generators as wind, ocean, geothermal and hydroelectric. This begins right from the design stage to the production stage in which equations derived to deal with matters pertaining to fluids are used.
The requirements for the batteries comprise high release rates, low insertion loss from components in series by means of the cells, superfluous security protection, and no upset by means of incredibly high electrostatic discharge transients. All Li-ion protector circuits for one- and two-cell applications have protector FETs in the low surface.
The author states that an electron beam has the properties of an electromagnetic wave of a very short wavelength; when accelerated through an electric field, its wavelength is inversely proportional to the square root of the accelerating voltage. A wavelength of only 0.04 nm, is bout 10,000 times shorter than that of visible light.
The author states that the human eye perceives light differently as we age. Seeing text for older workers is more difficult than for younger workers. Cool, high-quality light can create eye strain while the same is true if the lighting is too warm. The age of the workers is important when considering the type of lighting chosen.
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Feynman made a wide array of achievements ranging from the creation of an atomic bomb in the days of the Second World War to his unmatched contributions in the exploration of quantum electrodynamics because of this, Feynman received the Nobel Prize in 1965. Feynman maintained a scintillating method of mentorship throughout his career.
A pendulum is a mass that is suspended at the end of a string and it is free to swing. According to history it was known and used by the Chinese and later on it was developed by Galileo around 1600. Galileo found out an important property that makes the pendulum important in timekeeping that is, a pendulum period is independent of the amplitude of the swing
The rate at which objects fall from a given height to the surface of the Earth is referred to as the acceleration due to gravity, g. In this case, we will use a simple pendulum to obtain the value for g. The period T, or the time of the swing of the pendulum, depends on the length of the string and the acceleration resulting from the gravity.
Molecules can move away from each other when the temperature is raised. Intermolecular forces in liquids pull molecules together and are easily broken. Temperature increases the movement of individual molecules. This exists when the energy in the system exceeds attractive forces between molecules. In this case, gas molecules have little interaction with each other.
The results from the experiment can be applied in various fields which include treatment of ailments such as those affecting the functions of the hand and also in the maintenance of appropriate body fitness. Handgrip strength is a significant aspect of consideration in many occupational tasks and also in the general activity of the individual.
The invisible source of misunderstanding of the people is the main difference in cultural values and perceptions. And the present world of globalization market found that there is a free flow of human resources across geographical limitations and dissimilar cultures, so it has become essential to understand the significance of interpersonal communication practice.
A cone calorimeter is widely used in the field of fire safety engineering regarding the mass loss, ignition time, heat release rate, combustion product along other parameters as are associated with the burning properties of the materials. The device usually permits the fuel samples to expose to the different heat fluxes through Hogget's principle.
The results are obtained and the values are analyzed in order to arrive at a conclusion that will aid researchers who are interested in information regarding the properties of these samples as well as to provide data input for mathematical models that are developed for the purpose of predicting fire development.
The aim of the experiment will be done to green carpet, blue carpet, and sample underlay. The values will be recorded and it will be compared. The sample of the mass will be different in all values and the surface area will be different and there will be a change in the value of the oxygen that has been combusted.
As we get hold of this body of information, we shall then proceed to do an assessment of our data on the basis of (1) the appropriateness of the design, (2) the efficiency of the described synthetic routes, (3) whether the synthesis is capable of scaling up for commercial manufacture, and (4) the possible weaknesses in the described particles and their synthesis.
Laminar flow occurs when the flow of the fluid layers is parallel to each other with no form of disturbance on its flow. An example of a laminar flow is the flow of oil through a thin tube. Turbulent flow is a three-dimensional flow of fluid characterized by vortices or irregular and short-lived rotation of the flow currents in space and time.
Working cylinder radii ratio, R1/ R2 = 100. Mass on bigger piston, F2 = 62.5 tonnes. Thus the ratio of area for the system, A1/A2 = 100, 00. Now applying the formula, F1/A1 = F2/A2. F1 = F2 X (A1/A2) = 62.5 X 100, 00 = 62.5 X 104 tonnes. Thus mass on the smaller piston needed to balance the system is 62.5 X 104 tonnes.
For the purposes of this experiment, a total of five measurements from five different points were taken. These included one measurement from outside the university, three measurements from Holt Street Pinkenba, and a final measurement on the top 10cm soil at the site. The dose rate range obtained was as follows.
Within the circuit, there is a photo-diode the will detect the signal coming from the button used by the disabled person. When switch one is on there is the emission of IR waves that will make light fall on the diode and it will be visible. This will allow the flow of current across the circuit. tf the light is not visible then we can say that the circuit is no functioning and should be rechecked.
Exercise produces changes in the metabolism, in the micro and macrocirculation, changes in oxidation and changes in the musculature that create various benefits. Reduction in all cause mortality and risk factors for cardiac diseases and diabetes is a well recognized benefit of regular exercise. Lifestyle diseases are important from a global perspective.
Will Robots Take Over the World?May 13, 2009IntroductionThis paper sets out to investigate the question on whether it is possible or not for the machines to take over the human race. It will seek to analyze the current state of robotics by reviewing
The objective of this experiment is to measure strain and output voltage of quarter, half, and full-bridge circuit configurations for varying loads and prove that the measured output voltage is more linear and approximately double for the same applied load in half-bridge compared to the quarter bridge and full bridge compared to half-bridge configurations.
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Therefore, when a part of the body is harmed and needs to be fixed, it would be difficult to administer a drug that would only affect the inflicted area. For this purpose, Nanotechnology was created. Nano, rising to its name, is a very small particle that acts as a targeted drug. Nanoparticles act where required leaving the other cells unharmed.
Certain seismic wave sources cause several vibration and sound implications and must always fall within authorized protocol in seismic projects. Several jurisdictions have application compliance demands that have various reservations for the environmental concerns held by the conservation policies in a world sensitive to environmental integrity.
Between the years 1960 and 1980, the transitional temperature was believed to be 30k. It was in the year 1986 that the first high-temperature superconductor was discovered by Johannes Bednorz and Karl Muller who won a Nobel peace prize in physics which was made of copper oxide. The other name for the high-temperature superconductor is the cuprate superconductor.
A 0.025 kg block on a horizontal frictionless surface is attached to a horizontal spring with a spring constant of 0.4 m-1. the block is potential and kinetic energy by displacing it 0.1 m to the right of equilibrium and imparting a velocity of 0.4 m/s also to the right. Calculate the amplitude of the motion and maximum acceleration of the block.
Thermionic emissions are emissions of electrons or ions by highly heated substances, the charged particles are thermions. As the temperature rises the more thermions are emitted. The heated substance might be a metal filament. If the heated substances carry a positive or negative charge, the thermions will be of the same charge.
The three fire spreads are; Heat from the fire, as the source of ignition; Air movement through the central air conditioning; and the free convection air currents driven by the fire itself.The unburnt combustible uPVC plastic material obtains radiation from the flames of the fire and the smoke layer and adjacent structures.
This is so because the change in caloric value of the fuel is calculated for the whole burning period making the heat release rate is the same. However, the burning rate as calculated using the equation is not constant because since the mass of the burning wood changes so is the area and the height of the opening as the burning progresses making the burning rate change in the process.
The second requirement of equilibrium will be required to be confirmed that the net torque equals zero. Through the experiment through the use of the Arm Model a particular force created by a biceps muscle will be determined due to its contraction when the arm lifts an object whose weight is known. Torque refers to the rotational equivalent of force.
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The second theme of the paper discussed the mechanisms and underlying principles of Nanocrystillaline Semiconductor Film Electrodes, Dye Sensitizers, and Electrolytes to provide insight into the three key, though not all features of DSC. Further enhancements of research of these primary elements in the near future suggest that higher conversion.
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At the beginning of the chapter, Tipler and Gene start by defining the term thermodynamics as the study of energy in relation to its effects on a system. This is a recommendable way of beginning a topic since the reader is in apposition to gain insight on what the topic will cover before he or she finally majors into the topic.
There are several families of logic ICs numbered from 74xx00 onwards with letters (xx) in the middle of the number to indicate the type of circuitry, e.g. 74LS00 and 74HC00. The original family (now obsolete) had no letters, e.g. 7400. The 74LS (Low-power Schottky) family (like the original) uses TTL (Transistor-Transistor Logic) circuitry which is fast but requires more power than later families.
Solar power generation is the application of electronic or electrical technology to utilize naturally available energy from sunshine. In our world, naturally-occurring energy has become a phenomenon that needs to be utilized, precisely, the implications of unabated use of wholly artificial, environmentally-unfriendly methods of power generation presently available to us.
Consumption of electricity makes life faster in so many ways than the earlier days. Different types of types of equipment, electronic gadgets, electronic items etc are invented to make life easy and sustainable. People feel comfortable and live their lives in a luxurious way without giving any effort.
The equation of Archard’s adhesive wear is based on some assumptions that are related to the area of contacts and the materials of bodies. The bodies in contact cause an impact on each other according to texture, softness, and hardness of materials. The distance over which the two bodies are in contact determines the amount of wear that results.
Fluids are those substances that have the property of flowing. Liquids and gases are fluids. The normal force acting per unit area on the surface of the fluid is called pressure. If A is the normal force acting on the unit area A then pressure P = F/A. The pressure impressed on a surface depends on the normal force applied and the surface area. If the area is small then the pressure will be large.
He had discovered the principle of static electricity. However, since he lacked adequate tools to investigate further, subsequent thinkers did not follow Thales' ideas for more than 2000 years. Some authors argue that Thale had declared that loadstone attracted iron because it had a soul or some intervention by gods (Fowler). Therefore, the theory of electromagnetism can be traced back to Thales.
Watson's discovery was in the Molecular Biology field where he discovered the structure of the DNA commonly known as the double helix. Feynman on the other hand largely contributed to the Quantum Electrodynamics field. Both of these men won the Nobel Prize for their contributions, Feyman in 1965 while Watson won it in 1962.
The research on the sensor capable of recognizing the tactile feeling will find useful applications in artificial systems. The sensor will find essential uses in artificial systems that need the implemented human functions for various applications like prosthetics, robotics, human-machine interfaces, wearable electronics, and healthcare monitoring.
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The researcher states that wind energy, as a renewable energy source, has the potential of being cost-effective and has a high capacity factor. Most commercially operating wind turbines have horizontal axis designs with variable speed electric power generation. Variable speed wind power generation is superior to fixed speed generation in that.
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Four hydrogen coolers exist in this particular generator. They exist in a veridical position in the frame of the generator. Two of the coolants are positioned at the end of the generator frame while the other two are placed at the axial center line of the generator. It is possible to take out one coolant while the rest remain performing.
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The speed of sliding of these layers can be increased may be as twice as fast as the initial one, the fluid must be made to overcome the resisting force. Newton explained that the slower these layers slide over each other, the lesser resistance. If there were, no variance between this speed the resistance would not be there.
This discussion talks that in the Non- relativistic category, the vector force fields are considered to be the simplest physical fields. Faraday’s lines of force describing an electric field were the first time that these fields were taken seriously. The same method was used to describe the fields of gravitation.
The flow becomes turbulent in the layers adjacent to the airfoil. This causes an increase in drag force on the airfoil. Modern aircrafts use different features in order to avoid adverse effects of high speed flight, important among these include using thin airfoils, using supercritical airfoils and using sweep back angle
Although the image of the Carbon Nanotube structure might appear very visible to the eye, in reality, the tubular structure of carbon atoms has a diameter in the nanometer range while the length is in terms of micrometers. Multi-Walled CNT (MWCNT) has a greater diameter than Single-Walled CNT (SWCNT). MWCNT can have from 2 – 100s of concentric walls.