Work energy and power
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Work is done when a body is displaced under the action of a force. Work (W) is equal to the product of force (F) and displacement (s). Work done against gravity is equal to mass (m) times gravitational acceleration (g) times height (h), or mgh. There are three types of work: positive work when displacement is in the direction of force, negative work when displacement is opposite the direction of force, and zero work when there is no displacement. Energy is the ability to do work and can exist in different forms such as mechanical, heat, and electrical energy. Mechanical energy includes kinetic energy, which is the energy of motion and equals 1/2mv^2, and potential energy
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Work, Energy and Power
ENERGY AND POWER
This ppt is from XI class CBSE board
Energy
A body which has the capacity to do work is said to possess energy.
For example , water in a reservoir is said to possesses energy as it could be used to drive a turbine lower down the valley. There are many forms of energy e.g. electrical, chemical heat, nuclear, mechanical etc.
The SI units are the same as those for work, Joules J.
In this module only purely mechanical energy will be considered. This may be of two kinds, potential and kinetic.
Power
Power is the rate at which work is done, or the rate at which energy is used transferred.
Equation 3.6
The SI unit for power is the watt W.
A power of 1W means that work is being done at the rate of 1J/s.
Larger units for power are the kilowatt kW (1kW = 1000 W = 103 W) and
the megawatt MW (1 MW = 1000000 W = 106 W).
If work is being done by a machine moving at speed v against a constant force, or resistance, F, then since work doe is force times distance, work done per second is Fv, which is the same as power.
Chapter 6 Work And Energy
Work is done when a force causes an object to be displaced. Work (W) is equal to force (F) multiplied by displacement (s). Work units are joules. Potential energy is stored energy due to an object's position or state. Kinetic energy is the energy of motion and depends on an object's mass and velocity. Power is the rate at which work is done or energy is converted and is measured in watts. Conservation of energy states that energy cannot be created or destroyed, only changed from one form to another.
Work and Energy in Physics
This document provides information about work, energy, and the different types of energy. It begins with definitions of work and discusses how work is calculated based on force and distance. It then defines different types of energy including kinetic energy, potential energy, heat energy, chemical energy, electromagnetic energy, and nuclear energy. Examples are provided to demonstrate how to calculate work, kinetic energy, and potential energy. The last sections discuss conservative and non-conservative forces and how the law of conservation of energy applies.
work and energy
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Work, energy and power
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The document discusses various physics concepts related to work, energy and power including:
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Work, Energy and Power
ENERGY AND POWER
This ppt is from XI class CBSE board
Energy
A body which has the capacity to do work is said to possess energy.
For example , water in a reservoir is said to possesses energy as it could be used to drive a turbine lower down the valley. There are many forms of energy e.g. electrical, chemical heat, nuclear, mechanical etc.
The SI units are the same as those for work, Joules J.
In this module only purely mechanical energy will be considered. This may be of two kinds, potential and kinetic.
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Power is the rate at which work is done, or the rate at which energy is used transferred.
Equation 3.6
The SI unit for power is the watt W.
A power of 1W means that work is being done at the rate of 1J/s.
Larger units for power are the kilowatt kW (1kW = 1000 W = 103 W) and
the megawatt MW (1 MW = 1000000 W = 106 W).
If work is being done by a machine moving at speed v against a constant force, or resistance, F, then since work doe is force times distance, work done per second is Fv, which is the same as power.
Chapter 6 Work And Energy
Work is done when a force causes an object to be displaced. Work (W) is equal to force (F) multiplied by displacement (s). Work units are joules. Potential energy is stored energy due to an object's position or state. Kinetic energy is the energy of motion and depends on an object's mass and velocity. Power is the rate at which work is done or energy is converted and is measured in watts. Conservation of energy states that energy cannot be created or destroyed, only changed from one form to another.
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Slide share tst inno
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Work & energy
The Chapter of Physics of class 9th, very useful and important lesson of the view it and don't forget to like it guys. Thank You!
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Work is done when a force causes an object to undergo displacement. Work is calculated as the product of the force (F) and displacement (s) in the direction of the force (W=Fs). Energy is the ability to do work and exists in various forms including mechanical, heat, electrical, sound, light, and chemical. Mechanical energy exists in two forms: kinetic energy, which is the energy of motion calculated as one-half the mass (m) times the velocity (v) squared (K=1/2mv^2); and potential energy, which is the energy due to an object's position or strain and is calculated as the product of mass (m), gravitational acceleration (g), and height (
work and energy
This document discusses work, energy, and their related concepts. It defines work as force times displacement, with units of joules. Kinetic energy is defined as one-half mass times velocity squared and depends on an object's motion. Potential energy is defined as mass times gravitational field strength times height, and depends on an object's position or shape. The law of conservation of energy states that energy cannot be created or destroyed, only transformed between forms. Power is defined as the rate of doing work, or work per unit time, with units of watts.
Work, energy and power
Work is done when a force causes an object to move in the direction of the force. Work is measured in joules, which is equal to applying a force of 1 newton over a distance of 1 meter. Power is the rate at which work is done and is measured in watts. The work-energy theorem states that work done on an object transforms into a change in the object's kinetic energy. Various types of energy, such as gravitational potential energy, kinetic energy, and heat can be transformed into one another but the total amount of energy remains constant due to the law of conservation of energy.
Work and Energy
1. Work is done when a force causes an object to be displaced in the direction of the force. Work is calculated as force multiplied by displacement.
2. Energy is the ability of an object to do work and is measured in joules. There are different forms of energy including kinetic, potential, chemical, and mechanical energy.
3. Kinetic energy is the energy an object possesses due to its motion and depends on the object's mass and speed. Potential energy is stored energy due to an object's position or shape, such as from raising an object vertically or compressing a spring.
Nature and types of forces
Forces can be categorized as either contact forces or non-contact forces. Contact forces require direct physical contact between objects and include applied force, normal force, friction, tension, and spring force. Non-contact forces act over a distance and include gravitational force, electrical force, and magnetic force. A net force is the single force equivalent to multiple forces acting on an object. An unbalanced net force will cause acceleration, while a balanced net force where forces are equal will not change an object's motion. Common units for measuring force include the newton.
Inroduction to linear kinetics
This document provides an introduction to linear kinetics concepts including:
- Mass is a dimensionless quantity representing the amount of matter in an object and is measured by how much a force needs to be applied to change its motion.
- Forces can cause changes in velocity and examples are gravity, magnetism, and friction. Balanced and unbalanced forces are described.
- Work is the product of the applied force and displacement of an object. Energy is the capacity to do work and kinetic energy is the energy of moving objects. Power is the rate at which work can be done.
Work, Power & Energy for Class X CBSE and ICSE
Work is defined as the product of the force applied and the displacement in the direction of the force. Work can be positive, negative, or zero depending on the angle between the force and displacement vectors. The SI unit of work is the joule.
Power is defined as the rate of doing work, or the amount of work done per unit time. The SI unit of power is the watt.
Energy is the ability to do work and exists in various forms including kinetic energy, potential energy, and mechanical energy. The law of conservation of energy states that the total energy in an isolated system remains constant. It can be transformed from one form to another but cannot be created or destroyed.
Mechanical energy
Kinetic energy is the energy of motion and is calculated as K = 1/2 mv^2, where m is mass and v is velocity. Doubling speed quadruples kinetic energy, and tripling speed multiplies it by nine. The SI unit for kinetic, potential, and all other types of energy is the Joule. Potential energy depends on mass, gravitational field strength, and height. The total energy before and after an energy transformation will be equal according to the law of conservation of energy. Work is calculated as the force times distance and is measured in Joules. Forces acting perpendicular to or causing zero displacement do no work.
11workandenergy-150809064825-lva1-app6891.pdf
This document provides definitions and explanations of key concepts related to work, energy, and power:
1) Work is done when a force causes an object to be displaced in the direction of the force. Work is measured in joules, which is the work done by a force of 1 newton over a displacement of 1 meter.
2) Energy is the ability of an object to do work and is also measured in joules. There are different forms of energy including kinetic, potential, chemical, and mechanical energy.
3) Kinetic energy is the energy an object possesses due to its motion and depends on the object's mass and speed. Potential energy is the stored energy an object possesses due to its position
work and energy
This document provides definitions and explanations of key concepts related to work, energy, and power:
1) Work is done when a force causes an object to be displaced in the direction of the force. Work is measured in joules, which is the work done by a force of 1 newton over a displacement of 1 meter.
2) Energy is the ability of an object to do work and is also measured in joules. There are different forms of energy including kinetic, potential, chemical, and mechanical energy.
3) Kinetic energy is the energy an object possesses due to its motion and depends on the object's mass and speed. Potential energy is the stored energy an object possesses due to its position
Similar to Work energy and power (20)
workenergypowerbyakshat-151106163627-lva1-app6892.pdf
workenergypowerbyakshat-151106163627-lva1-app6892.pdf
Recently uploaded
The debris of the ‘last major merger’ is dynamically young
The Milky Way’s (MW) inner stellar halo contains an [Fe/H]-rich component with highly eccentric orbits, often referred to as the
‘last major merger.’ Hypotheses for the origin of this component include Gaia-Sausage/Enceladus (GSE), where the progenitor
collided with the MW proto-disc 8–11 Gyr ago, and the Virgo Radial Merger (VRM), where the progenitor collided with the
MW disc within the last 3 Gyr. These two scenarios make different predictions about observable structure in local phase space,
because the morphology of debris depends on how long it has had to phase mix. The recently identified phase-space folds in Gaia
DR3 have positive caustic velocities, making them fundamentally different than the phase-mixed chevrons found in simulations
at late times. Roughly 20 per cent of the stars in the prograde local stellar halo are associated with the observed caustics. Based
on a simple phase-mixing model, the observed number of caustics are consistent with a merger that occurred 1–2 Gyr ago.
We also compare the observed phase-space distribution to FIRE-2 Latte simulations of GSE-like mergers, using a quantitative
measurement of phase mixing (2D causticality). The observed local phase-space distribution best matches the simulated data
1–2 Gyr after collision, and certainly not later than 3 Gyr. This is further evidence that the progenitor of the ‘last major merger’
did not collide with the MW proto-disc at early times, as is thought for the GSE, but instead collided with the MW disc within
the last few Gyr, consistent with the body of work surrounding the VRM.
Compexometric titration/Chelatorphy titration/chelating titration
Classification
Metal ion ion indicators
Masking and demasking reagents
Estimation of Magnisium sulphate
Calcium gluconate
Complexometric Titration/ chelatometry titration/chelating titration, introduction, Types-
1.Direct Titration
2.Back Titration
3.Replacement Titration
4.Indirect Titration
Masking agent, Demasking agents
formation of complex
comparition between masking and demasking agents,
Indicators/Metal ion indicators/ Metallochromic indicators/pM indicators,
Visual Technique,PM indicators (metallochromic), Indicators of pH, Redox Indicators
Instrumental Techniques-Photometry
Potentiometry
Miscellaneous methods.
Complex titration with EDTA.
ESR spectroscopy in liquid food and beverages.pptx
With increasing population, people need to rely on packaged food stuffs. Packaging of food materials requires the preservation of food. There are various methods for the treatment of food to preserve them and irradiation treatment of food is one of them. It is the most common and the most harmless method for the food preservation as it does not alter the necessary micronutrients of food materials. Although irradiated food doesn’t cause any harm to the human health but still the quality assessment of food is required to provide consumers with necessary information about the food. ESR spectroscopy is the most sophisticated way to investigate the quality of the food and the free radicals induced during the processing of the food. ESR spin trapping technique is useful for the detection of highly unstable radicals in the food. The antioxidant capability of liquid food and beverages in mainly performed by spin trapping technique.
The cost of acquiring information by natural selection
This is a short talk that I gave at the Banff International Research Station workshop on Modeling and Theory in Population Biology. The idea is to try to understand how the burden of natural selection relates to the amount of information that selection puts into the genome.
It's based on the first part of this research paper:
The cost of information acquisition by natural selection
Ryan Seamus McGee, Olivia Kosterlitz, Artem Kaznatcheev, Benjamin Kerr, Carl T. Bergstrom
bioRxiv 2022.07.02.498577; doi: https://doi.org/10.1101/2022.07.02.498577
The use of Nauplii and metanauplii artemia in aquaculture (brine shrimp).pptx
Although Artemia has been known to man for centuries, its use as a food for the culture of larval organisms apparently began only in the 1930s, when several investigators found that it made an excellent food for newly hatched fish larvae (Litvinenko et al., 2023). As aquaculture developed in the 1960s and ‘70s, the use of Artemia also became more widespread, due both to its convenience and to its nutritional value for larval organisms (Arenas-Pardo et al., 2024). The fact that Artemia dormant cysts can be stored for long periods in cans, and then used as an off-the-shelf food requiring only 24 h of incubation makes them the most convenient, least labor-intensive, live food available for aquaculture (Sorgeloos & Roubach, 2021). The nutritional value of Artemia, especially for marine organisms, is not constant, but varies both geographically and temporally. During the last decade, however, both the causes of Artemia nutritional variability and methods to improve poorquality Artemia have been identified (Loufi et al., 2024).
Brine shrimp (Artemia spp.) are used in marine aquaculture worldwide. Annually, more than 2,000 metric tons of dry cysts are used for cultivation of fish, crustacean, and shellfish larva. Brine shrimp are important to aquaculture because newly hatched brine shrimp nauplii (larvae) provide a food source for many fish fry (Mozanzadeh et al., 2021). Culture and harvesting of brine shrimp eggs represents another aspect of the aquaculture industry. Nauplii and metanauplii of Artemia, commonly known as brine shrimp, play a crucial role in aquaculture due to their nutritional value and suitability as live feed for many aquatic species, particularly in larval stages (Sorgeloos & Roubach, 2021).
SAR of Medicinal Chemistry 1st by dk.pdf
In this presentation include the prototype drug SAR on thus or with their examples .
Syllabus of Second Year B. Pharmacy
2019 PATTERN.
Unlocking the mysteries of reproduction: Exploring fecundity and gonadosomati...
The pygmy halfbeak Dermogenys colletei, is known for its viviparous nature, this presents an intriguing case of relatively low fecundity, raising questions about potential compensatory reproductive strategies employed by this species. Our study delves into the examination of fecundity and the Gonadosomatic Index (GSI) in the Pygmy Halfbeak, D. colletei (Meisner, 2001), an intriguing viviparous fish indigenous to Sarawak, Borneo. We hypothesize that the Pygmy halfbeak, D. colletei, may exhibit unique reproductive adaptations to offset its low fecundity, thus enhancing its survival and fitness. To address this, we conducted a comprehensive study utilizing 28 mature female specimens of D. colletei, carefully measuring fecundity and GSI to shed light on the reproductive adaptations of this species. Our findings reveal that D. colletei indeed exhibits low fecundity, with a mean of 16.76 ± 2.01, and a mean GSI of 12.83 ± 1.27, providing crucial insights into the reproductive mechanisms at play in this species. These results underscore the existence of unique reproductive strategies in D. colletei, enabling its adaptation and persistence in Borneo's diverse aquatic ecosystems, and call for further ecological research to elucidate these mechanisms. This study lends to a better understanding of viviparous fish in Borneo and contributes to the broader field of aquatic ecology, enhancing our knowledge of species adaptations to unique ecological challenges.
Equivariant neural networks and representation theory
Or: Beyond linear.
Abstract: Equivariant neural networks are neural networks that incorporate symmetries. The nonlinear activation functions in these networks result in interesting nonlinear equivariant maps between simple representations, and motivate the key player of this talk: piecewise linear representation theory.
Disclaimer: No one is perfect, so please mind that there might be mistakes and typos.
dtubbenhauer@gmail.com
Corrected slides: dtubbenhauer.com/talks.html
Bob Reedy - Nitrate in Texas Groundwater.pdf
Presented at June 6-7 Texas Alliance of Groundwater Districts Business Meeting
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3:国家专业人才认证中心颁发入库证书
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6:个人职称评审加20分
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8:在国家人才网主办的国家网络招聘大会中纳入资料，供国家高端企业选择人才
EWOCS-I: The catalog of X-ray sources in Westerlund 1 from the Extended Weste...
Context. With a mass exceeding several 104 M⊙ and a rich and dense population of massive stars, supermassive young star clusters
represent the most massive star-forming environment that is dominated by the feedback from massive stars and gravitational interactions
among stars.
Aims. In this paper we present the Extended Westerlund 1 and 2 Open Clusters Survey (EWOCS) project, which aims to investigate
the influence of the starburst environment on the formation of stars and planets, and on the evolution of both low and high mass stars.
The primary targets of this project are Westerlund 1 and 2, the closest supermassive star clusters to the Sun.
Methods. The project is based primarily on recent observations conducted with the Chandra and JWST observatories. Specifically,
the Chandra survey of Westerlund 1 consists of 36 new ACIS-I observations, nearly co-pointed, for a total exposure time of 1 Msec.
Additionally, we included 8 archival Chandra/ACIS-S observations. This paper presents the resulting catalog of X-ray sources within
and around Westerlund 1. Sources were detected by combining various existing methods, and photon extraction and source validation
were carried out using the ACIS-Extract software.
Results. The EWOCS X-ray catalog comprises 5963 validated sources out of the 9420 initially provided to ACIS-Extract, reaching a
photon flux threshold of approximately 2 × 10−8 photons cm−2
s
−1
. The X-ray sources exhibit a highly concentrated spatial distribution,
with 1075 sources located within the central 1 arcmin. We have successfully detected X-ray emissions from 126 out of the 166 known
massive stars of the cluster, and we have collected over 71 000 photons from the magnetar CXO J164710.20-455217.
Applied Science: Thermodynamics, Laws & Methodology.pdf
When I was asked to give a companion lecture in support of ‘The Philosophy of Science’ (https://shorturl.at/4pUXz) I decided not to walk through the detail of the many methodologies in order of use. Instead, I chose to employ a long standing, and ongoing, scientific development as an exemplar. And so, I chose the ever evolving story of Thermodynamics as a scientific investigation at its best.
Conducted over a period of >200 years, Thermodynamics R&D, and application, benefitted from the highest levels of professionalism, collaboration, and technical thoroughness. New layers of application, methodology, and practice were made possible by the progressive advance of technology. In turn, this has seen measurement and modelling accuracy continually improved at a micro and macro level.
Perhaps most importantly, Thermodynamics rapidly became a primary tool in the advance of applied science/engineering/technology, spanning micro-tech, to aerospace and cosmology. I can think of no better a story to illustrate the breadth of scientific methodologies and applications at their best.
The binding of cosmological structures by massless topological defects
Assuming spherical symmetry and weak field, it is shown that if one solves the Poisson equation or the Einstein field
equations sourced by a topological defect, i.e. a singularity of a very specific form, the result is a localized gravitational
field capable of driving flat rotation (i.e. Keplerian circular orbits at a constant speed for all radii) of test masses on a thin
spherical shell without any underlying mass. Moreover, a large-scale structure which exploits this solution by assembling
concentrically a number of such topological defects can establish a flat stellar or galactic rotation curve, and can also deflect
light in the same manner as an equipotential (isothermal) sphere. Thus, the need for dark matter or modified gravity theory is
mitigated, at least in part.
Sharlene Leurig - Enabling Onsite Water Use with Net Zero Water
Sharlene Leurig - Enabling Onsite Water Use with Net Zero WaterTexas Alliance of Groundwater Districts
Presented at June 6-7 Texas Alliance of Groundwater Districts Business MeetingPhenomics assisted breeding in crop improvement
As the population is increasing and will reach about 9 billion upto 2050. Also due to climate change, it is difficult to meet the food requirement of such a large population. Facing the challenges presented by resource shortages, climate
change, and increasing global population, crop yield and quality need to be improved in a sustainable way over the coming decades. Genetic improvement by breeding is the best way to increase crop productivity. With the rapid progression of functional
genomics, an increasing number of crop genomes have been sequenced and dozens of genes influencing key agronomic traits have been identified. However, current genome sequence information has not been adequately exploited for understanding
the complex characteristics of multiple gene, owing to a lack of crop phenotypic data. Efficient, automatic, and accurate technologies and platforms that can capture phenotypic data that can
be linked to genomics information for crop improvement at all growth stages have become as important as genotyping. Thus,
high-throughput phenotyping has become the major bottleneck restricting crop breeding. Plant phenomics has been defined as the high-throughput, accurate acquisition and analysis of multi-dimensional phenotypes
during crop growing stages at the organism level, including the cell, tissue, organ, individual plant, plot, and field levels. With the rapid development of novel sensors, imaging technology,
and analysis methods, numerous infrastructure platforms have been developed for phenotyping.
Recently uploaded (20)
The debris of the ‘last major merger’ is dynamically young
The debris of the ‘last major merger’ is dynamically young
Compexometric titration/Chelatorphy titration/chelating titration
Compexometric titration/Chelatorphy titration/chelating titration
ESR spectroscopy in liquid food and beverages.pptx
ESR spectroscopy in liquid food and beverages.pptx
The cost of acquiring information by natural selection
The cost of acquiring information by natural selection
The use of Nauplii and metanauplii artemia in aquaculture (brine shrimp).pptx
The use of Nauplii and metanauplii artemia in aquaculture (brine shrimp).pptx
Unlocking the mysteries of reproduction: Exploring fecundity and gonadosomati...
Unlocking the mysteries of reproduction: Exploring fecundity and gonadosomati...
Equivariant neural networks and representation theory
Equivariant neural networks and representation theory
EWOCS-I: The catalog of X-ray sources in Westerlund 1 from the Extended Weste...
EWOCS-I: The catalog of X-ray sources in Westerlund 1 from the Extended Weste...
Applied Science: Thermodynamics, Laws & Methodology.pdf
Applied Science: Thermodynamics, Laws & Methodology.pdf
The binding of cosmological structures by massless topological defects
The binding of cosmological structures by massless topological defects
Sharlene Leurig - Enabling Onsite Water Use with Net Zero Water
Sharlene Leurig - Enabling Onsite Water Use with Net Zero Water
mô tả các thí nghiệm về đánh giá tác động dòng khí hóa sau đốt
mô tả các thí nghiệm về đánh giá tác động dòng khí hóa sau đốt
Work energy and power
- 2. Work Work is said to be done only when a body undergoes displacement under the action of a force. Work done W=Fs joule
- 3. Work done against gravitational force We have , W=Fs When a body is raised through a height ‘h’ S=h As per Newton’s Second law of motion , F=mg Then, W = mgh Work done against gravitational force is mgh.
- 4. Types of work Positive work Negative work Zero work Displacement is along the direction of applied force e.g. work done by gravity on a freely falling body. Displacement is opposite to the direction of applied force. e.g. work done by friction. Displacement is zero. e.g. work done on pushing a rigid wall.
- 5. Energy Energy is the capacity to do work Unit of energy is joule. Types of energies: Mechanical energy Heat energy Electrical energy etc.
- 6. Types of mechanical energy Kinetic energy(K) Potential energy(U) Energy possessed by a body by virtue of its motion. K=(1/2)mv2 Energy possessed by a body due to its position. U=mgh
- 7. Law of conservation of energy Energy can neither be created nor be destroyed . One form of energy can only be converted to another form.
- 8. Power Work done per unit time or rate of doing work is power. Power , P=W/t Unit is J/s
- 9. Horse power In the early days horses where used for pulling carts and other purposes. A horse power or 1 HP is the power of a horse. 1HP=746W