Physics Essays

Electromagnetic radiation is a type of energy coming out from certain physical processes. It consists of both visible and non-visible types of radiation. For example, light radiates from the sun and consists of electromagnetic radiations in the visible range. At the same time, electromagnetic radiations consist of radiations in the invisible range also.

The movement of the analyte is dependent on its composition, the mobile phase and the stationary phase. The retention time is the amount of time it takes for the analyte to elute and is unique in each sample. The linear velocity that is enhanced by the high pressure that is used gives the components minimal time to diffuse inside the column. 

SC is used in the system, which is different from the asynchronous counter given that it consists of flip-flops that are supplied by the clock pulses. One advantage of the SC is that they have the capability to build faster counters and with reduced synchronization interferences with system components. (Tao 2003). 

The author states that the ability of any object, material or surface to absorb sound or light depends on a factor called as absorption coefficient. Every object has its specific absorption coefficient that varies with the frequency of sound, area and volume density of the surface or object.

Generally, sometimes employees get caught between choosing to be loyal to their companies and performing their moral obligations to society. Such employees include engineers, the management and salespersons who may have to choose between marketing their products and disclosing the defects in them.

Naturally, nuclear reactors usually occur the moment deposits of uranium, which is a radioactive element, build up in a single spot, and finally ignite a nuclear chain reaction which is self-sustaining, causing uranium to sub-divide a process known as fission, leading to the production of other elements.

An oscillator is an electronic or mechanical device that functions on the principle of oscillation. Oscillation refers to a periodic variation between two items based on varying levels of energy. All kinds of oscillators operate on some basic principle whereby the oscillator uses a delicate amplifier whose output is feedback in the input phase.

Some problems such as the microcontrollers which were found to be very touchy when they came with serial data settings could not be adjusted since this was a manufacturer’s specification and this affected the overall performance of the car. The problems encountered result in the alteration of the initial design to a modified version of the same.

Generally speaking, a collision between earth and a bigger body resulted in a lot of material (in form of small moons) being detached from earth and this material collided and attracted each other to form one solid mass; the moon as we know it. Eventually, the earth’s gravity settled the moon in its orbit.

OTEC food production is also a critical by-product. The production is of OTEC concurrently leads to the production of chief nutrient-rich in cold water from the deep ocean. Such wastewater from the OTEC extraction and production is dischargeable into mostly contained ponds adjacent to the shore or land (Climate Wire, 2003).

The direction of the current flow is altered or reversed in the case of alternative current; this alteration is done regularly. Direct current is a little different from alternative current because it flows in the same direction all the time and no alteration is done with it like in the case of alternative current.

Heat is a form of energy, specifically, the energy movement from two entities that have different temperatures. Since all objects have thermal energy, heat can also be defined as the transference of thermal energy from an object to its surroundings or to other objects. There are three ways that thermal energy (heat) can be transferred: Conduction, Convection, Radiation.

The decision to choose aluminum follows the study of the mechanical properties and physical behavior of aluminum. The second guiding principle is the affordability of the material since high costs make the production of the containerless efficient regardless of the performance of the component developed.

The design process of a mass-spectrometer whose purpose is to detect commonly smuggled illicit drugs at an airport is discussed in this paper. The mass spectrometer is expected to be able to detect concentrations of the common elements for all the drugs. After detection, the drugs are compared with a database of chemical compounds as outlined in the paper. 

This experiment was conducted to study the mechanism of the reaction and kinetic characteristics of Pittsburgh coal combustion based on the emission of CO and CO2. Based on the data obtained from this experiment, the rate constant of Pittsburgh coal combustion was determined to be 0.039, the pre-exponential factor as 1.293 and the activation energy as 4225.

The concept of torque has been applied in various machines we use in our everyday life. Anything that has a motor has a torque. This power is actually the torque that drives the car through the rotation of wheels. It depends on the amount of power needed by a vehicle to pull the load. Pulling trailers require a lot of torque to function.

Electricity generation using the dual chambered MFCs in the presence of cation exchange membrane and fluorescent Pseudomonas trivialis as biocatalyst. Synthetic wastewater, sucrose solution, LB broth was prepared and autoclaved in the first experiment except PSB buffer, which was prepared again, since it was finished during the second experiment.

Nondestructive testing is used to examine the material reliability of the test article. The plan of future usefulness is significant to the quality control practice of sampling. It is understood that sampling is nondestructive testing if the same tested sample comes back to service. Hardness testing by indentation offers an appealing test case.

Other specifications are as follows inductor must have a current rating (RMS current or DC current), which defines the maximum temperature rise that it will have at maximum ambient temperature. This defines the power losses that will be experienced in the inductor hence its heat dissipation in the windings. 

Physical properties of thermal effects are the following: thermal conductivity of tissue and blood perfusion of tissue (Smith 2001, 1429). Poor vascularization of tissues and essential heat conduct of tissue leads to the temperature rise. Tissues which are closer to the bone have a greater susceptibility to heat increase via conduction

The process of x-ray scattering involves the double differential cross section process. The instrument used to measure this form of X-ray scattering is called a TOF chopper spectrometer. Inelastic scattering essentially involves the interaction between neutron and phonons and the exchange of energy and momentum that takes place. 

An Alternating Сurrent waveform can also be referred to as a periodic waveform since it time-dependent and is usually a product of a rotating generator. The shape of this periodic waveform is obtained by using a fundamental frequency and adding harmonic signals for varying amplitudes and frequencies.Therefore, it is applicable in radios, transformers, audio devices such hi-fis, and loudspeakers.

These components are usually in a linear format (Schindler 66). To make the network quite useful, reduction of components is very important in the whole process. 

The voltage divider is mainly used to reduce the voltage supplied to electrical appliances. Different electrical appliances require varying voltages but the power supplied by voltage sources are constant. It is, therefore, necessary to reduce the voltage to suit the given application. The voltage divider is also used to create a reference voltage. 

With its success, physics had let materialism dominate man’s perspective. Having mathematics to serve its explanations and experiments to prove it, it had managed to elucidate us on subjects that were once incomprehensible. But still, some questions remain to man, of which physics has yet to demonstrate. That keeps a man on his continuous journey, looking for other options, relating diverse disciplines, seeking for the answer on his existence, for his existence. 

The volume of the liquid displaced is equal to the volume of the solid. The weight of the liquid displaced is equal to the upthrust experienced by the solid due to the liquid. This is the upthrust due to

What is known to many people when it comes to the measurement of resistance is the use of voltmeters and ammeters. That method is very direct and therefore easy to undertake. The biggest problem, however, with this kind of measurement is the fact that they are prone to the internal resistances of these meters.

The various forms of mechanical energy find their relationship with one another on the basis of the analysis of Bernoulli’s theorem expression. The mechanical forms of energy which kinetic energy; pressure energy as well as potential energy is summed up at any one particular point during the flow to be equal to a constant value.

The three alternative simulations that worked well with coarser meshes resulted in a steeper velocity slope although polyhedral mesh that has lengthened prismatic layer is more appropriate for the same purpose. The three simulations are also forecasted to generate slightly reduced pressure under helical coil stream tubes.

The flow representation must be nonlinear and viscous. The model must be able to cope with flow separation and re-attachment. The unsteadiness due to the model must be included but the analysis is not straightforward because of input data erroneous. The computational requirement for such a calculation is very considerable since it a time-accurate.

Technically, the center of motion is known as the equilibrium position. Due to the momentum (made up of the mass and the speed of motion of the swinging body), the swinging body passes via the equilibrium position to the other side of the centerline until it reaches the maximum distance it can go on that side.

Measurement of fluid flow has been historically been performed with the use weir device (John, 2000). Sharp crested consists of a top structure that is flat and short on the upper edge. This is close to the bevel which is found on the lower side. In this type of weirs, the fluid flowing changes into an overflowing water sheet which is known as a nappe.

In the laminar region, which is closer to the surface of the material, the flame is thinnest, and the heat transfer from the flame to the surface occurs primarily by convection; however, as the height of the flame increases and hence the flame thickness and turbulence, radiation becomes dominant. The figure below shows the flame spread on the material surface.

Various control techniques for induction motors have been effectively implemented, facilitating the motor to be applied in a wide range of applications. Two commonly used techniques include scalar and vector, with the most popular scalar method being the voltage to frequency, also commonly referred to as volts to hertz control.

The zeroth law of thermodynamics states that “if two systems are both in thermal equilibrium with a third system, they are also in thermal equilibrium with each other” (Grote & Antonsson, 2009, p.225). It means that if two systems come into contact with one another, then heat exchange occurs so that thermal equilibrium is achieved.

The equations of motions can be applied in solving calculations to do with different kinematic variables in cases where the acceleration is constant, and also when an object is traveling a line that is straight. If an object is projected, then the gravitational force becomes a constant of acceleration.

The digital application is been used in modern applications highly because it improves and increases measurement sensitivity, which is reflected in the efficiency of workloads in a company. That is; digital power in modern applications has increased the load of work that can be done in a day while relying on digital power for success (Ming, 2011).

Through an S bend having a diameter of 20 mm. The two conditions for the experiment are air as a fluid with an initial Reynolds number of 500 and the second fluids with an initial Reynolds number of 50000. This was meant to be able to study the relationship of Reynolds number as well as the inlet match numbers (Versteeg, p. 60).

The author of the paper argues in a well-organized manner that CTA works by adjusting the current flowing through the wire so that a constant temperature is maintained. This is attained by the use of a feedback circuit. The current required to maintain a constant temperature is related to heat loss (Stainback & Nagabushana, 1993).

The paper “Measuring the Velocity of Sound Applying a Standing Wave of a String”  is an intriguing version example of a lab report on physics. The purpose of this experiment was to delve into standing waves on a string and to establish the relationship between the velocity of a wave in vibrating string and its characteristics including; mass per unit length, frequency, and tension.

The major area that fire investigation is based on is explained at both individual levels and group levels. The case study also provides support for the role of fire characteristics on the extent and nature of the fire. Following the investigation of fire characteristics and the roles of fire investigators, it is possible to create a report relation any fire outbreak to its causes.

An orifice is an opening that is circular at the base or side of the reservoir. Fluid discharges in form of a jet are released into the atmosphere. The volumetric flow rates are discharged through an orifice and depend upon the level of the orifice upon the head of the fluid. The volume rate of flow can be used as a means of measuring flow rate. 

The Euler buckling load for the maximum eccentricity experiment is 33.1 N, which has an error of 36.9% compared to the theoretical buckling load. The Euler buckling for loads with eccentricity should however be lower because they develop moments that increase the bulking of the column (Chilver et al, 1999).

However, scientists have been working tirelessly to use the technique of wireless transmission of radiations to enable wireless power transmission. Significant steps towards realizing power transmission without cables started in the 1800s when scientists such as Heinrich Rudolf Hertz and Nicolas Tesla pioneered wireless transmission.

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.

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.