1) Kinetic energy is the energy an object possesses due to its motion. When a moving object impacts another object, it can transfer its kinetic energy and do work by driving the other object.
2) The kinetic energy an object gains from falling under gravity can be calculated as 1/2mv^2, which is equal to the potential energy lost, mgh, during the fall.
3) For an object experiencing only conservative forces like gravity or a spring, the total mechanical energy (kinetic plus potential) remains constant. This principle of conservation of mechanical energy can be used to analyze projectile or spring systems.
Explain work, energy and power. The Law of Conservation of Energy is utilized as well as conservative and non conservative systems.
**More good stuff available at:
www.wsautter.com
and
http://www.youtube.com/results?search_query=wnsautter&aq=f
PRESENTATION MADE BY FAROOQ MUSTAFA JOYIA,MOHTASIM AND ADIL ZAHOOR (students of Departement of Mechanical Engineering,International Islamic University Islamabad)
Explain work, energy and power. The Law of Conservation of Energy is utilized as well as conservative and non conservative systems.
**More good stuff available at:
www.wsautter.com
and
http://www.youtube.com/results?search_query=wnsautter&aq=f
PRESENTATION MADE BY FAROOQ MUSTAFA JOYIA,MOHTASIM AND ADIL ZAHOOR (students of Departement of Mechanical Engineering,International Islamic University Islamabad)
With this mantra success is sure to come your way. At APEX INSTITUTE we strive our best to realize the Alchemist's dream of turning 'base metal' into 'gold'.
A simple ppt yet interactive on the topic work power and energy. With smooth design and looks the ppt is very good for clearing the basics related to this topic, hope it will help you further.
With this mantra success is sure to come your way. At APEX INSTITUTE we strive our best to realize the Alchemist's dream of turning 'base metal' into 'gold'.
A simple ppt yet interactive on the topic work power and energy. With smooth design and looks the ppt is very good for clearing the basics related to this topic, hope it will help you further.
To investigate the relation between the ratio of (i) output and input voltage and (ii)
number of turns in the secondary coil and primary coil of a self-designed transformer.
June 3, 2024 Anti-Semitism Letter Sent to MIT President Kornbluth and MIT Cor...Levi Shapiro
Letter from the Congress of the United States regarding Anti-Semitism sent June 3rd to MIT President Sally Kornbluth, MIT Corp Chair, Mark Gorenberg
Dear Dr. Kornbluth and Mr. Gorenberg,
The US House of Representatives is deeply concerned by ongoing and pervasive acts of antisemitic
harassment and intimidation at the Massachusetts Institute of Technology (MIT). Failing to act decisively to ensure a safe learning environment for all students would be a grave dereliction of your responsibilities as President of MIT and Chair of the MIT Corporation.
This Congress will not stand idly by and allow an environment hostile to Jewish students to persist. The House believes that your institution is in violation of Title VI of the Civil Rights Act, and the inability or
unwillingness to rectify this violation through action requires accountability.
Postsecondary education is a unique opportunity for students to learn and have their ideas and beliefs challenged. However, universities receiving hundreds of millions of federal funds annually have denied
students that opportunity and have been hijacked to become venues for the promotion of terrorism, antisemitic harassment and intimidation, unlawful encampments, and in some cases, assaults and riots.
The House of Representatives will not countenance the use of federal funds to indoctrinate students into hateful, antisemitic, anti-American supporters of terrorism. Investigations into campus antisemitism by the Committee on Education and the Workforce and the Committee on Ways and Means have been expanded into a Congress-wide probe across all relevant jurisdictions to address this national crisis. The undersigned Committees will conduct oversight into the use of federal funds at MIT and its learning environment under authorities granted to each Committee.
• The Committee on Education and the Workforce has been investigating your institution since December 7, 2023. The Committee has broad jurisdiction over postsecondary education, including its compliance with Title VI of the Civil Rights Act, campus safety concerns over disruptions to the learning environment, and the awarding of federal student aid under the Higher Education Act.
• The Committee on Oversight and Accountability is investigating the sources of funding and other support flowing to groups espousing pro-Hamas propaganda and engaged in antisemitic harassment and intimidation of students. The Committee on Oversight and Accountability is the principal oversight committee of the US House of Representatives and has broad authority to investigate “any matter” at “any time” under House Rule X.
• The Committee on Ways and Means has been investigating several universities since November 15, 2023, when the Committee held a hearing entitled From Ivory Towers to Dark Corners: Investigating the Nexus Between Antisemitism, Tax-Exempt Universities, and Terror Financing. The Committee followed the hearing with letters to those institutions on January 10, 202
The simplified electron and muon model, Oscillating Spacetime: The Foundation...RitikBhardwaj56
Discover the Simplified Electron and Muon Model: A New Wave-Based Approach to Understanding Particles delves into a groundbreaking theory that presents electrons and muons as rotating soliton waves within oscillating spacetime. Geared towards students, researchers, and science buffs, this book breaks down complex ideas into simple explanations. It covers topics such as electron waves, temporal dynamics, and the implications of this model on particle physics. With clear illustrations and easy-to-follow explanations, readers will gain a new outlook on the universe's fundamental nature.
This slide is special for master students (MIBS & MIFB) in UUM. Also useful for readers who are interested in the topic of contemporary Islamic banking.
Exploiting Artificial Intelligence for Empowering Researchers and Faculty, In...Dr. Vinod Kumar Kanvaria
Exploiting Artificial Intelligence for Empowering Researchers and Faculty,
International FDP on Fundamentals of Research in Social Sciences
at Integral University, Lucknow, 06.06.2024
By Dr. Vinod Kumar Kanvaria
it describes the bony anatomy including the femoral head , acetabulum, labrum . also discusses the capsule , ligaments . muscle that act on the hip joint and the range of motion are outlined. factors affecting hip joint stability and weight transmission through the joint are summarized.
MATATAG CURRICULUM: ASSESSING THE READINESS OF ELEM. PUBLIC SCHOOL TEACHERS I...NelTorrente
In this research, it concludes that while the readiness of teachers in Caloocan City to implement the MATATAG Curriculum is generally positive, targeted efforts in professional development, resource distribution, support networks, and comprehensive preparation can address the existing gaps and ensure successful curriculum implementation.
Biological screening of herbal drugs: Introduction and Need for
Phyto-Pharmacological Screening, New Strategies for evaluating
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for Anti-inflammatory, Antiulcer, Anticancer, Wound healing, Antidiabetic, Hepatoprotective, Cardio protective, Diuretics and
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A Strategic Approach: GenAI in EducationPeter Windle
Artificial Intelligence (AI) technologies such as Generative AI, Image Generators and Large Language Models have had a dramatic impact on teaching, learning and assessment over the past 18 months. The most immediate threat AI posed was to Academic Integrity with Higher Education Institutes (HEIs) focusing their efforts on combating the use of GenAI in assessment. Guidelines were developed for staff and students, policies put in place too. Innovative educators have forged paths in the use of Generative AI for teaching, learning and assessments leading to pockets of transformation springing up across HEIs, often with little or no top-down guidance, support or direction.
This Gasta posits a strategic approach to integrating AI into HEIs to prepare staff, students and the curriculum for an evolving world and workplace. We will highlight the advantages of working with these technologies beyond the realm of teaching, learning and assessment by considering prompt engineering skills, industry impact, curriculum changes, and the need for staff upskilling. In contrast, not engaging strategically with Generative AI poses risks, including falling behind peers, missed opportunities and failing to ensure our graduates remain employable. The rapid evolution of AI technologies necessitates a proactive and strategic approach if we are to remain relevant.
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Acetabularia acetabulum is a single-celled green alga that in its vegetative state is morphologically differentiated into a basal rhizoid and an axially elongated stalk, which bears whorls of branching hairs. The single diploid nucleus resides in the rhizoid.
Unit 8 - Information and Communication Technology (Paper I).pdfThiyagu K
This slides describes the basic concepts of ICT, basics of Email, Emerging Technology and Digital Initiatives in Education. This presentations aligns with the UGC Paper I syllabus.
Read| The latest issue of The Challenger is here! We are thrilled to announce that our school paper has qualified for the NATIONAL SCHOOLS PRESS CONFERENCE (NSPC) 2024. Thank you for your unwavering support and trust. Dive into the stories that made us stand out!
Macroeconomics- Movie Location
This will be used as part of your Personal Professional Portfolio once graded.
Objective:
Prepare a presentation or a paper using research, basic comparative analysis, data organization and application of economic information. You will make an informed assessment of an economic climate outside of the United States to accomplish an entertainment industry objective.
2024.06.01 Introducing a competency framework for languag learning materials ...Sandy Millin
http://sandymillin.wordpress.com/iateflwebinar2024
Published classroom materials form the basis of syllabuses, drive teacher professional development, and have a potentially huge influence on learners, teachers and education systems. All teachers also create their own materials, whether a few sentences on a blackboard, a highly-structured fully-realised online course, or anything in between. Despite this, the knowledge and skills needed to create effective language learning materials are rarely part of teacher training, and are mostly learnt by trial and error.
Knowledge and skills frameworks, generally called competency frameworks, for ELT teachers, trainers and managers have existed for a few years now. However, until I created one for my MA dissertation, there wasn’t one drawing together what we need to know and do to be able to effectively produce language learning materials.
This webinar will introduce you to my framework, highlighting the key competencies I identified from my research. It will also show how anybody involved in language teaching (any language, not just English!), teacher training, managing schools or developing language learning materials can benefit from using the framework.
2024.06.01 Introducing a competency framework for languag learning materials ...
10_1425_web_Lec_13_KineticEnergy.pdf
1. Kinetic Energy and Energy Conservation
Physics 1425 Lecture 13
Michael Fowler, UVa
2. Moving Things Have Energy
• Energy is the ability to do work: to
deliver a force that acts through a
distance.
• Placing a weight gently on a nail does
nothing.
• Dropping the weight on the nail can
drive the nail into the wood.
• If the weight is moving when it hits
the nail, it has the ability to do work
driving the nail in. This is its kinetic
energy.
• A
5kg
3. How Much Work Does the Moving Weight Do?
• After contact with the nail, the forces
between the weight and the nail are equal
and opposite. Suppose the nail is driven in
a total distance x0.
• In going through a small distance Δx, the
work done on the nail ΔW =FΔx.
• Meanwhile, for the weight -F = ma, the
weight has slowed down: -F =mΔv/Δt .
• Therefore ΔW = FΔx = -m ΔvΔx/Δt.
• Now for small Δx, we can take Δx/Δt = v,
so ΔW = -mvΔv, and
• A
Δx
5kg
x0
-F
F
0
0
0
2
1
0
2
0
x
v
W dW mvdv mv
==
− =
∫ ∫
Weight hits nail
with speed v0
4. Where Did the Weight’s Energy Come From?
• We’ve seen that if the weight hits the nail and
comes rapidly to rest, it loses energy ½ mv0
2.
• This is its kinetic energy K at speed v0.
• Let’s suppose it gained that energy by being
dropped from rest at a height h.
• At uniform acceleration g, v0
2 = 2gh.
• So the kinetic energy ½ mv0
2 = mgh: precisely
the potential energy lost in the fall—the work
done by gravity mgh = force mg x distance h.
5. A Small Kinetic Energy Change
• Suppose the velocity of a mass m changes by a
tiny amount as the mass moves through .
Then the change in kinetic energy K is (dropping
the very tiny (Δv)2 term)
• Note this depends only on the change in speed—
the dot product ensures that only the
component of in the direction of counts.
The displacement is of course in direction .
v
∆
( )
2 2
1 1
2 2
r v
K m v v mv mv v m
t
∆ ⋅∆
∆= + ∆ − = ⋅∆=
∆
v
∆
v
r
∆
r
∆
v
6. Energy Balance for a Projectile
• Consider a projectile acted on only by gravity,
moving a distance in a short time Δt.
• Gravity does work , where U
is the gravitational potential energy.
• The change in velocity , so the
change in potential energy
• The total energy U + K does not change.
r
∆
mg r U
⋅∆ = −∆
v g t
∆ = ∆
!
v r
U mg r m K
t
∆ ⋅∆
∆ = − ⋅∆ = − = −∆
∆
7. Conservation of Mechanical Energy
• We’ve established that for a projectile acted on
only by gravity K.E. + P.E. = a constant,
• Here E is called the total (mechanical) energy.
• This is valid if:
A. We can neglect air resistance, friction, etc.
B. Other forces acting are always perpendicular
to the direction of motion: so this will also be
true for a roller coaster, ignoring friction.
2
1
2 ,
mv mgh E
+ =
8. Springs Conserve Energy, Too
• Suppose the spring is
fixed to the wall, at the
other end a mass m
slides on a frictionless
surface.
• By an exactly similar
argument to that for
gravity, we can show
constant total energy.
• A
Extension x
F kx
= −
m
v
2 2
1 1
2 2 ,
mv kx E
+ =
9. Conservative and Nonconservative Forces
• Gravity and the spring are examples of
conservative forces: if work is done against
them, they store it all as potential energy, and
it can be used later. Total mechanical energy
is conserved.
• Friction is not a conservative force: work done
against friction generates heat, it does not
conserve the mechanical energy, little of
which can be recovered.
10. Different Paths for a Conservative Force
• For a conservative force, suppose taking an
object from point A to point B along path P1
requires us to supply work W1. Then if we let the
object slide back from B to A, the force will fully
reimburse us, giving back all the work W1.
• Now suppose there’s another path P2 from A to B,
and using that path takes less work from us, W2.
• We can construct a track going from A to B along
P2 then back along P1, and we’ll gain energy! This
is a perpetual motion machine…so what’s wrong?
11. Potential Energy in a Conservative Field
• Imagine a complicated conservative field, like gravity
from Earth + Moon at any point. We’ve established
that the work we need to do to take a mass m from
point to ,
depends only on the endpoints, not the path—so we
can unambiguously define a potential energy
difference
A
r
B
r
( )
,
B
A
r
A B
r
W r r F dr
= ⋅
∫
( ) ( )
B
A
r
B A
r
U r U r F dr
− = ⋅
∫
12. Potential Energy Determines Force
• If we know the potential energy in a
complicated gravitational field, how can we
find the gravitational force on a mass m at ?
• Take a very short path going in the x-direction:
• We must apply a force Fx to move this small
distance, so the opposing gravitational force is
given by .
( ) ( )
r x
x
r
U r x U r F dr F x
+∆
+ ∆ − = ⋅ = ∆
∫
( )/
G x
F U r x
= −∂ ∂
( )
U r
r
13. More on Potential Energy and Force
• Since the potential energy is given by integrating the force
through a distance, it’s not surprising that we get back the
force by differentiating the potential energy.
• For gravity near the Earth’s surface, , taking z as
vertically up, so
and since U doesn’t depend on x or y, there is no force in
those directions.
• Reminder! Forces and work depend only on changes in
potential energy—we can set the zero of potential energy
wherever is convenient, like ground level.
( )
U r mgz
=
/
z
F U z mg
= −∂ ∂ = −
14. Potential Energy and Force for a Spring
• For a spring,
a parabola.
The force the spring exerts when
extended to x
• It’s worth staring at the U(x)
graph, bearing in mind that
the force at any point is the
negative of the slope there—
see how it gets steeper further
away from the origin.
• A
x
U(x)
0
( ) 2
1
2
U x kx
=
( ) ( )/
F x dU x dx kx
=
− =
−