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Power is defined as the rate at which work is done or energy is converted. It is measured in watts, which is equal to one joule per second. The formula for average power over a period of time is the amount of work done divided by the duration of the period. Power in mechanics is the product of the force applied to an object and the object's velocity.
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![POWER<br />In physics, power (symbol: P) is the rate at which work is performed or energy is converted and transferred. In the SI system of measurement, power is measured in watts (symbol: W). one watt is defined as the rate of work done or energy conversion of one joule per second. if ∆W is the amount of work performed during a period of time of duration ∆t, the average power Pavg over that period is given by the formula: <br />The dimension of power is energy divided by time. Which is equal to one joule per second. In mechanics, the work done on an object is related to the forces acting on it by: <br />,[object Object]](https://image.slidesharecdn.com/physics-power-110324102415-phpapp01/85/Physics-1-320.jpg)
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Work is done when a force causes an object to move through a distance. The work (W) done by a constant force (F) is equal to the force multiplied by the distance (d) moved in the direction of the force: W = Fd. Power is the rate at which work is done, and is calculated as work divided by time. Positive work is when force and motion are in the same direction, negative when they are opposite, and zero when perpendicular. Work and power are important concepts in physics and engineering.
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Power is defined as the rate at which work is done or energy is transferred over time. It can be calculated as the work done divided by the time taken (average power) or as the limit of average power as time approaches zero (instantaneous power). Power is a scalar quantity measured in watts (Ws-1) or horsepower. A 100-watt light bulb used for 10 hours uses 1 kilowatt hour of energy, which is equal to 3.6 megajoules. Electricity bills measure energy consumption in kilowatt hours.
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This document discusses fluid dynamics and Bernoulli's equation. It begins by defining different forms of energy in a flowing liquid, including kinetic energy, potential energy, pressure energy, and internal energy. It then derives Bernoulli's equation, which states that the total head of a fluid particle remains constant during steady, incompressible flow. The derivation considers forces acting on a fluid particle and uses conservation of energy. Finally, the document presents the general energy equation for steady fluid flow and the specific equation for incompressible fluids using the concepts of total head, head loss, and hydraulic grade line.
BEF 12403 - Week 2 - Power and Energy.ppt
The document discusses power and energy in electrical circuits. It defines power as the rate at which energy is delivered by a current to a circuit element. Power is calculated as the product of voltage and current (P=VI) and represents the instantaneous power. The total energy delivered to a circuit element over time is calculated by integrating the power over time. The document also discusses conventions for defining positive and negative power based on the directions of current and voltage.
Power and energy
Here in this presentation, I have tried to input all the basic and simple concept of Power and Energy. It might be helpful for all. Thank you, everybody.
Topic 2.3
This document discusses key concepts relating to work, energy, and power in mechanics. It defines work as the force multiplied by the distance moved, and explains that work is equal to the magnitude of the force component in the direction of motion. It also discusses different types of energy (kinetic, potential, elastic, etc.), the principle of conservation of energy, and defines power as the rate of doing work.
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Acid base
Svante Arrhenius developed an acid-base theory based on the work of Jacobus Henricus van 't Hoff and Wilhelm Ostwald. According to Arrhenius' theory, acids are substances that increase the hydrogen ion (H+) concentration in aqueous solutions, while bases increase the hydroxide ion (OH-) concentration. Arrhenius proposed that acids and bases neutralize each other through reactions that produce water and a salt. His theory provided a simple chemical definition of acids and bases that explained many of their characteristic properties and reactions.
Chemistry
Svante Arrhenius developed an acid-base theory based on the idea that acids increase the concentration of hydrogen ions (H+) in water while bases increase the concentration of hydroxide ions (OH-). According to his theory, when an acid and base are mixed in water, they neutralize each other by reacting to form a salt and water. Arrhenius provided examples of common acids and bases donating H+ or OH- ions in water to support his theory.
ICT
The document describes a simple flowchart for caring for a cat. It starts with asking if you should give the cat some food. If yes, it then checks if you can find a window or door to let the cat outside. If found, it has you open the window/door, take the cat outside, and then close the window/door once finished. If a window or door cannot be found, it stops the process.
English
1) The document is a letter from Irene to her friend Kania describing a basketball tournament she attended where Marsudirini High School defeated SMA Penabur High School in the finals.
2) The document also contains Irene's proposed itinerary for a one week trip to Jakarta, Indonesia where she plans to visit popular tourist attractions like Monas, Ancol Beach, Ragunan Zoo, and Taman Mini Indonesia Indah.
3) On her last day, Irene plans to have lunch at an old town area before returning to the airport to fly home.
Bahasa Indonesia
Cerita ini menggambarkan Jakarta pada tahun 1950-an ketika Pramoedya Ananta Toer pertama kali menginjak kota tersebut. Tulisan ini menceritakan latar belakang sosial masyarakat Jakarta pada masa lalu yang belum terlalu maju.
History
1. The document summarizes the early cultures that influenced Indonesia, including the Bacson Hoabinh tools from 600 BC, Dongson bronze culture from Vietnam, and India's cultural impacts starting around 1-5 AD.
2. Dongson culture brought bronze tools to Southeast Asia and is seen in the similarities between artifacts found in Vietnam and Indonesia, like nekara drums.
3. India's culture and religions like Hinduism and Buddhism spread through Indonesia starting around 1-5 AD, as shown through kingdom systems, language, art, and religious artifacts found throughout the archipelago.
geography
Manufacturing involves using machines, tools, and labor to produce goods for use or sale. It includes a wide range of consumer goods like textiles, chemicals, and engineering products. Manufacturing is considered a secondary industry and describes the production process in factories and industrial plants. While modern manufacturing tools driven by computers have advanced production, they have also led to increased unemployment as human labor is replaced. Manufacturing provides revenue to governments and benefits communities by creating jobs and satisfying customers. It can take place under different economic systems but typically aims to mass produce goods for profit under free markets or state planning in collectivist systems.
Sociology
Poverty is derived from the word "poor" and means having a lack of wealth and resources. There are several key causes of poverty discussed in the document. Population growth rate contributes if the increasing population is not matched by sufficient economic opportunity. Low education levels mean fewer skilled workers. High unemployment and underemployment occur when the labor force exceeds available jobs. A lack of social support structures and government assistance also exacerbate poverty conditions.
Chemistry
1) Svante Arrhenius developed the Arrhenius theory of acids and bases which states that acids are substances that produce hydrogen ions (H+) in water and bases are substances that produce hydroxide ions (OH-) in water.
2) According to the theory, acids and bases neutralize each other through reactions that produce salt and water. For example, hydrochloric acid (HCl) produces H+ ions in water while ammonia (NH3) produces OH- ions in water, and their neutralization reaction yields salt and water.
3) The Arrhenius theory provides definitions for acids and bases based on the ions they produce when dissolved in water.
Biology
Kencur, also known as Kaempferia galanga L., is a type of medicinal plant belonging to the Zingiberaceae family. Its rhizome contains essential oils and alkaloids that are used as a stimulant. Kencur is distributed in Malaysia, Thailand, and other parts of Asia, and goes by different names in various regions. While it is sometimes incorrectly referred to as lesser galangal or zedoary, those are actually different species. Kencur contains chemical compounds like eucalyptol, citral, cinnamic acid, and borneol. It has many traditional medicinal uses for treating stomach ulcers, ear infections, colds, headaches, cough
Physics
- 2. F is force