Essays on Physics

Free essays on Physics are academic papers that are made available to the public without any cost. These essays discuss various topics related to physics, such as mechanics, electricity and magnetism, thermodynamics, and quantum mechanics. They explore new discoveries and theories, as well as the history and evolution of the field. They may provide insights on current issues in physics, or review experiments and scientific studies. Free essays on physics may serve as a valuable resource for students, teachers, and researchers who are studying or exploring the field of physics.
IGCSE Coordinated Science: Series & Parallel Circuits
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IGCSE Coordinated Science: Series and Parallel Circuits Series and Parallel Circuits Demonstrate understanding that the current at every point in a series circuit is the same. Current is the flow of electric charge within a circuit. Current does NOT ever change or run out in a series circuit. It is constant at ANY point in the circuit; it is the same at the beginning and at the end of a circuit. Recall and use the fact that the sum of…...
IGCSE Coordinated Science: Energy
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IGCSE Coordinated Science: Energy Energy Know that energy and work are measured in joules (J), and power in watts (W). The energy of an object is measured in Joules (J). 1000 Joules = 1 kilojoule (kJ). The power of an object is measured in Watts (W). 1000 Watts = 1 kilowatt (kW). Demonstrate understanding that an object may have energy due to its motion (kinetic) or its position (potential), and that energy may be transferred and stored. All objects have…...
IGCSE Coordinated Science: Electrical Energy
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IGCSE Coordinated Science: Electrical Energy Electrical Energy Recall and use the equations: P = IV and E = IVt. You might need to know these two equations for the exam. The first one is: P = IV (Unit: Watts) P is power, I is Electric Current (measured in Amps), and V is Potential difference (Voltage, measured in Volts). Units for power is Watts. This is also known as Joule's Law. The second one is: E = IVt (Units: Joules) E…...
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Thermal Expansion of Solids, Liquids and Gases
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IGCSE Coordinated Sciences: Thermal Expansion of Solids, Liquids, and Gases Thermal Expansion of Solids, Liquids, and Gases Describe qualitatively the thermal expansion of solids, liquids, and gases. Solids: A solid gains kinetic energy and starts to vibrate more vigorously when thermal or heat energy is applied to it. As a result, the solid expands slightly in all directions. Liquids: When a liquid is heated, the volume of the liquid increases as a result of the molecules having more kinetic energy.…...
Coordinated Science: Evaporation
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IGCSE Coordinated Science: Evaporation Evaporation Evaporation mostly occurs at the surface of a liquid, and for evaporation to occur, the molecules must have enough kinetic energy. First, let's define the word Evaporation. Evaporation is basically the change of state of a substance from liquid to gas. If you look back into the Topic "States of Matter," you will notice that the particles in a liquid are stuck quite close together, whereas the particles in a gas are scattered all over…...
IGCSE Coordinated Science: Mass and Weight
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IGCSE Coordinated Science: Mass and Weight Mass and Weight Difference between Mass and Weight Weight is the gravitational pull on an object measured in Newtons because it is the amount of force. This is different on different planets because the gravitational pull is different due to the different mass of the planet. Mass is the amount of particles in a substance. This is the same regardless of how much gravitational pull is applied to the object because it represents the…...
IGCSE Coordinated Science: Radiation
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IGCSE Coordinated Science: Radiation Radiation Recognize radiation as the method of heat transfer that does not require a medium to travel through. Radiation, unlike conduction and convection, does not require a medium to travel through. It can travel through anything, including empty space (vacuum). A good example is the radiation from the Sun. Earth receives heat from the Sun through radiation. The heat is transferred through space (which we know is a huge vacuum) by radiation! Describe experiments to show…...
IB Physics: Uniform Circular Motion
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IB Physics: Uniform Circular Motion Uniform Circular Motion 1.Draw a vector diagram to illustrate that the acceleration of a particle moving with constant speed in a circle is directed towards the centre of the circle The below image will be very important, so make sure you understand it. Note that all quantities below are denoted as vectors. The object going in a circular motion is said to be going through uniform circular motion . Since the object is moving, it…...
IB Physics: Thermal Concepts
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IB Physics: Thermal Concepts 1. State that temperature determines the direction of thermal energy transfer between two objects. The temperature of an object usually measures how hot the object is. If two objects are placed in thermal contact, the temperature difference between the two objects will determine the direction of thermal energy transfer. Thermal energy is naturally transferred “down” the temperature difference—-from high to low temperatures. After a period of time, the two objects are expected to reach roughly the…...
Unraveling the Dance of Dynamics: The Intrigue of the Moment of Inertia Rod
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Who said physics doesn't have poetry? Well, someone who probably never dipped their toes into the world of rotational motion! Today, let's dive into the rhythm of the spinning universe and the principle of conservation of angular momentum by unraveling the concept of 'moment of inertia', with our focal point being a humble rod.Firstly, let's establish our stage. Just as mass represents the amount of matter in an object when it comes to linear motion, the moment of inertia plays…...
Unlocking the Secrets of Acidity: A Guide to Finding pKa
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The wonders of chemistry often hinge on an intricate dance of protons and electrons. One such marvel is the concept of acidity and the pH scale, which has far-reaching applications from the laboratory to the food on your plate. For those enchanted by the world of chemistry, unraveling the mystique of pKa is akin to finding a treasure map. In this post, we’ll embark on a journey to explore how to find pKa and why it's such a potent tool…...
The Early Childhood, Education, and Contributions of Albert Einstein
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Throughout the years there has been many great inventors and scientist that have renovated our generation. Albert Einstein is one of them, he is known for many great things and he is a man of many accomplishments. He is also known to be the “most influential physicist of the 20‘" century!" As of today, we still use a lot of what came from Albert Einstein's theories. All of the information he left behind was used to develop new things like…...
Early Childhood EducationPhysicsScienceTechnology
An Experiment of Electrolysis and Faraday’s Two Laws
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During the course of my experiment, I shall attempt to prove Faraday is two laws regarding electrolysis correct. I will attempt to keep my experiment accurate within the limits of human error. Faraday's Laws: The mass of a substance produced at an electrode during electrolysis is proportional to the quantity of electricity that has passed. The number of Faradays required to discharge one mole of an ion at an electrode is equal to the number of charges on that ion.…...
A Functioning Subduction Zone Under San Francisco or Los Angeles
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Science is depicted in various media outlets, and many times explained or displayed differently. Many movies are science fiction, meaning that it is not real but often takes on that role. Science throughout various films have played a triggering interest in science to people, while also inspiring breakthroughs. The film San Andreas directed by Brad Peyton and written by Carlton Cuse is a great example of science being used in a film. In this paper, a short summary along with…...
ForceGeologyLos AngelesNature
A Profile of My Friend and Roommate
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On a groggy drunken weekday, the clicking of keyboard buttons and pencil tapping flow from my roommate‘s fingers, The small, abrasive noises from him doing homework woke me from my post-noon slumbering. I examined, with eyes half open, the room for any damages and mess. I am shocked back to life when Anthony calls my name. “Justin!” he says lightly, but abrasive like that pencil tapping. “If you are looking for your bottle opener, it’s in the trash. You told…...
CultureDrawingMechanical EngineeringPhysics
Engineering Closest To My Goal
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As a kid, I often wondered about what my future career would be; I did not want to work for someone else or be stuck in a field that I hated, but rather I wanted to create something of my own, The idea of being a self-made man was something my father taught me, which influenced me from the time I was a small child. I tried pitching ideas for various products to my dad, none of which were practical,…...
Mechanical EngineeringPhysicsPsychologyScience
The Science of the Formation of Black Hole in Outer Space
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Stars are affected by two main forces: Nuclear fusion, and graVItation Black Holes are the result of an Imbalance of these two forces, Nuclear fusion- the outward force from the star‘s centre and gravitation- the force pulling inwards. These two processes balance one another until all the star‘s hydrogen is exhausted, allowing gravitation to take over. Once gravitation dominates. the star becomes unstable and starts to collapse, As the core compresses, it heats up and results in a supernova explosion…...
Black HoleGravityNaturePhysics
Black Hole a Region of Space Time
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A black hole is a region of space time with such a strong force of gravity, everything, including light, can be pulled into the black hole. Objects are pulled in once they have gone beyond the event horizon, which marks the point of no return. They are called “black" because of the fact that all the light is pulled in, so it reflects no light. Black holes are formed when massive stars reach the end of their life cycle and…...
AstronomyBlack HoleGravityScience
The Architecture of the Ancient Greece
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By the third century BC, Ancient Greek mathematicians had begun studying and writing about the seemingly useless conic sections. First studied by the pupils of Plato, it was eventually declared that conic sections (ellipse, parabola, circle, and hyperbola) could be obtained by slicing a right circular cone at different angles. Eventually, through the course of history, scientists and philosophers found applications for the Conics in physics and astronomy For example, the elliptical travel of the planets was pointed out by…...
The Significance of Chemical Changes in Science
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A chemical change is any change that results in the formation of new chemical substances, In the following experiment, a solution that begins with copper nitrate II will undergo a series of chemical changes. Examples of evidence for a chemical change include temperature change, color change, precipitate formation, and gas given offl During a change of temperature, a solution is exothermic meaning there is an increase in the speed of molecules. Exothermic is the taking in of energy When a…...
The Life and Times of Ralph Nader in His Book, “Unsafe at Any Speed”
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Not many people know who Ralph Nader is, he can walk in the streets and not worry about anybody coming up to him asking for an autograph. People may be unaware of his presence but he is the guy who made a big impact in the nation and probably saved thousands of people. Ralph Nader is the reason why millions of people don’t die when they go for a car ride and also ran for presidency in 2000. But what…...
The Speed Limit on Interstates Should Be Increased
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The speed limit is becoming more and more of a suggested speed instead of an actual guideline. This is not about increasing the speed limit in rural areas, this is strictly interstatesr I am not saying you should be speeding in neighborhoods and flying over speed bumps. More and more people everyday are speeding without the concern of getting pulled over because they simply don’t care, Recent studies are starting to show increased speed limits actually decrease the percentage of…...
Speedy Trial Rights: Explanation & Solution
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Explain the right to a speedy trial and the remedy for a violation of the right The United States criminal justice system has put in place crucial measures to ensure that defendants in criminal prosecution are protected to ensure a free, just and fair trial process The sixth amendment has effectively put in place crucial focus on five principles that aim at ensuring that that the rights of defendants are protected The right to speedy trial is one of the…...
Common LawJusticeLawSpeed
A Study of the Impact of a Speedy Trial Legislation
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The United States law provides in addition to the right to an attorney, the right to a speedy trial to all individuals convicted. This law seeks to protect perpetrators from waiting a certain amount of time, This law is documented in the federal law in the Speedy Trial Act of the year 1974. Every individual in the United States has a right to a speedy trial in addition to time in order to prepare for a suitable defense predominantly in…...
5 Waves of Trust Summary
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“The Speed of Trust” does not only explain how important trust is in different kinds of relationship but also how trust -when fully developed- can make a person successful and prosperous The author Stephen Covey discusses the economics of trust using the model called the Five Waves of Trust. In the book, he states the differences between low-trust relationship and high-trust relationship. The myths and realities of trust are also presented such as the speed of trust and creating and…...
Valleyfield Quebec
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Cornwall Electric is an electricity transmission and distribution utility, licensed by the Ontario Energy Board (OEB) to operate in Cornwall Ontario, Canada. It supplies electricity to over 23,800 customers in the city of Cornwall, the townships of South Glengarry and South Stormont, and a portion of the Mohawk Nation territory of Akwesasne, all located in Ontario Canada. The utility is a wholly owned subsidiary of Fortis Ontario Inc., a division of Fortis Inc. Cornwall Electric is the only municipal electricity…...
Scholarly Writing and Plagiarism
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Grammarly and SafeAssign are tools that are newly introduced to me. These tools have proven to be great resources to utilize as a Walden student to check my work and to ensure references citing errors. It was necessary to read Patricia O’Conner’s writing posted on the blackboard (Walden University, n.d.) three times on three different days before I could begin the assignment. After working hard to paraphrase the writing, I ended up with a summary of 498 words. I stepped…...
Causes of Health Problems in Miners
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Many coal miners breathe in the pollutants of coal dust and one of the effects of coal mining is the development of black lung disease. It is caused by long-term subjection to coal dust. Dust particles collect in the tissues of the lungs and it results in injury to the lungs. Besides creating critical health problems for coal miners, there are also serious health problems that can occur outside of the mine and above ground. Those who live relatively close…...
Coal Mining
Building Energy Consumption Evaluation Methods
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Several methods and tools have been developed over the past two decades aimed to evaluate energy consumption in buildings; in response to the implementation of regulations on energy use in buildings. Evaluation of energy performance for buildings has been carried out using benchmarks. These benchmarks are usually as a result of building audits and surveys to establish what is typically accessible or extant conditions (Vaezi-Nejad, et al., 2003) (Krarti, 2012). The overall understanding is that if the current situation is…...
Solar Biohybrids for Fuel Production
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Solar energy is present abundant in nature and a renewable source of energy. Plants perform photosynthesis using solar energy which converts CO2 and O2. Likewise, the hybrid system harvests solar energy which enables in fusing with particularly engineered bacteria and fungus, they reacts according to its nature of modification to output the various chemicals and that chemicals can be used in different aspects of manufacturing drugs ,methane and artificial photosynthetic process for carbon fixation. The conversion of CO2 results in…...
Energy Efficiency in Philadelphia
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Heavily informed by the Civil Rights Movement, the Environmental Justice movement for minorities and people of color is constructed by agendas surrounding autonomy, land rights, and human rights through the redefining of how African Americans and minorities relate to the environment (Taylor 2000). Proponents of classical economic theory argue poverty is the main factor for distribution of environmental hazards, and African Americans and minorities are most affected because they are disproportionately poor (Mohai and Bryant 1992). Market dynamic explanations are…...
Integrated Energy Storage Systems    
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Since 1963, Dynapower has been a leading provider of energy storage systems, inverters, and DC-DC converters for numerous applications at institutions around the world. Our fully-integrated energy storage systems re engineered to facilitate applications both in front and behind the meter. Each Dynapower energy storage system incorporates UL 1741 standard inverters or converters, air-conditioned batteries, comprehensive AC and DC switchgear, specialized control systems, and state of the art fire suppression equipment. Dynapower's energy storage systems are highly versatile, and can…...
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With exponential growth in the terrestrial photovoltaic (PV) market, many issues arise regarding the integration of these systems into utility networks at high levels of penetration. One such issue is making certain these systems area unit seen as valuable resources, instead of liabilities, to utility system operators. PV systems area unit composed of PV array(s) that convert incident alternative energy into DC electricity, and an inverter which, as the power electronics interface between the array and utility network, performs several…...
Energy management system for critical loads using power electronics
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The aim of this paper is to give an brief work about an Energy management system (EMS) for critical loads using power electronics hybrid power sources (grid and photovoltaic cells) with battery storage and this whole EMS system is used to control the peak power for ac loads and continuous power supply to the critical loads. Photo voltaic cells are used for battery charging purpose, battery will be discharge at two conditions. One is when grid is shut down and…...
Superconductors and applications in electrical energy
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The current social and economic dilemma regarding the storage and usage of electric power must be addressed as the demand for power continues to increase. There are many current forms of energy storage, but new methods need to be researched and developed. As the world moves toward more renewable, clean energy and becomes more aware of the effect on the environment, there will need to be methods in place to accept that change and the continual increase in demand. These…...
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Analysing the energy use in buildings can be as complex as the construction of the building itself. In order to lessen the impact on energy on the environment, building energy performance assessment is often undertaken to determine its performance in relation to other buildings and the built environment in general (Douglas, 1996). The performance result is been used to define what is regarded as typical. Hence, forms the benchmark upon which improved performance is pursued. The methods of assessment have…...
Energy management 
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Biodiesel in basic words is a propelled type of Biofuel. It alludes to a creature or vegetable fat based sustainable fuel, made up of a long chain of synthetic mixes like propyl, ethyl, methyl and so forth. It is made by synthetically treating vegetable oil or Animal fat with liquor producing mixes. The biggest conceivable wellspring of reasonable oil originates from oil harvests, for example, rapeseed, palm or soybean. Most biodiesel created at present is delivered from waste vegetable oil…...
Energy use and efficiency in modern communication systems: a review
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We can clearly differentiate two different trends: there are constant power value of about 3.5 kW for the morning and the night time, it is an oscillating trend, with an average value of about 5 kW for the fieriest hours and the late evening. This is a not a shocking trend if we consider that in the first case the consumption is due only to the transmission functions, but in the second case besides the transmission functions there is the…...
Energy sector responsible for two-thirds of GHG emissions
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About two-third of the world’s anthropogenic greenhouse-gas (GHG) emissions is accounted for by the energy production and consumption activities (IEA, 2015). European Commission in its “Energy 2020” strategy document mentions, “Energy efficiency is the most cost-effective way to reduce emissions, improve energy security and competitiveness, make energy consumption more affordable for consumers as well as create employment, including in export industries.” In this context, Energy Efficiency (EE) interventions are not only considered as one of the lowest cost options for…...
Green Building Studio
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Overview To evaluate the capabilities of Autodesk Revit and Green Building Studio a case study methodology was used. The case study involved a proposed design project for a School in Abuja, Nigeria. It involved using Building models created in Revit and exported to GBS for analysis. Case study The case of study is a proposed Faculty storey office building located at Abuja, Nigeria. The Faculty building will be used for departmental offices, lecture halls, meeting rooms, organised seminars and conferences,…...
EnergyGreen BuildingTechnology
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