This document discusses key concepts related to motion in physics. It defines and distinguishes between distance, displacement, speed, velocity, uniform and non-uniform motion, acceleration, and equations of motion. Equations for speed, average speed, velocity, acceleration, and motion under uniform acceleration are provided. Distance-time and velocity-time graphs are described for bodies with uniform and non-uniform motion as well as uniform acceleration. Uniform circular motion is also summarized.
SITE 2017 - K12 Online and Blended Learning: Current Research and Challenges ...Michael Barbour
Jackson, B., Barbour, M. K., Parks, R., & Kennedy, K.
(2017, March). K12 online and blended learning: Current research and challenges into implementation and teacher education. A panel presentation at the Society for Information Technology and Teacher Education conference, Austin, TX.
Using Discovery to create products people actually want (2017 UX Copenhagen W...Jenny Shirey
Too often, we make things that are beautiful and user-friendly, yet fall flat when they are released into the world. How do we ensure we don’t waste time creating products and features that no one wants? At Trustpilot, we’ve radically changed the way we work, using a process called Discovery to build less stuff and create more value. In this fast-paced, hands-on workshop, you’ll practice some of these methods yourself, and learn how to apply them at home.
These slides were presented during a 90-minute, hands-on workshop at UX Copenhagen 2017.
SITE 2017 - K12 Online and Blended Learning: Current Research and Challenges ...Michael Barbour
Jackson, B., Barbour, M. K., Parks, R., & Kennedy, K.
(2017, March). K12 online and blended learning: Current research and challenges into implementation and teacher education. A panel presentation at the Society for Information Technology and Teacher Education conference, Austin, TX.
Using Discovery to create products people actually want (2017 UX Copenhagen W...Jenny Shirey
Too often, we make things that are beautiful and user-friendly, yet fall flat when they are released into the world. How do we ensure we don’t waste time creating products and features that no one wants? At Trustpilot, we’ve radically changed the way we work, using a process called Discovery to build less stuff and create more value. In this fast-paced, hands-on workshop, you’ll practice some of these methods yourself, and learn how to apply them at home.
These slides were presented during a 90-minute, hands-on workshop at UX Copenhagen 2017.
APOSTILA TERRACAP 2017 ARQUITETO COM 2 VOLUMES + ACESSO AO NOSSO BANCO DE DADOS DE VÍDEO AULAS GRÁTIS. VEJA EM: http://universiaeditora.com.br/apostilas/apostila-terracap-2017/apostila-terracap-2017-arquiteto-video-aulas.html
These slide based on true evidence and important facts rather than all un necessary facts and you wil not board when reading my slides
Ask me if you find any problem
this ppt is based on the physics chapter: force and pressure.
you can also see the other chapters on youtube
https://www.youtube.com/watch?v=nejarAzn76A
Motion is a change in position of an object over time. Motion is described in terms of displacement, distance, velocity, acceleration, time and speed. Motion of a body is observed by attaching a frame of reference to an observer and measuring the change in position of the body relative to that frame.
If the position of a body is not changing with respect to a given frame of reference, the body is said to be at rest.
CBSE Class 9&10th Sample eBook , which helps you to understand the chapter in easy way also downaload sample papers and previous year papers and practice to solve the question on time. Download at www.misostudy.com.
CBSE Class 9th Sample eBook, which helps you to understand the chapter in easy way also downaload sample papers and previous year papers and practice to solve the question on time. Download at www.misostudy.com.
Observation of Io’s Resurfacing via Plume Deposition Using Ground-based Adapt...Sérgio Sacani
Since volcanic activity was first discovered on Io from Voyager images in 1979, changes
on Io’s surface have been monitored from both spacecraft and ground-based telescopes.
Here, we present the highest spatial resolution images of Io ever obtained from a groundbased telescope. These images, acquired by the SHARK-VIS instrument on the Large
Binocular Telescope, show evidence of a major resurfacing event on Io’s trailing hemisphere. When compared to the most recent spacecraft images, the SHARK-VIS images
show that a plume deposit from a powerful eruption at Pillan Patera has covered part
of the long-lived Pele plume deposit. Although this type of resurfacing event may be common on Io, few have been detected due to the rarity of spacecraft visits and the previously low spatial resolution available from Earth-based telescopes. The SHARK-VIS instrument ushers in a new era of high resolution imaging of Io’s surface using adaptive
optics at visible wavelengths.
Nutraceutical market, scope and growth: Herbal drug technologyLokesh Patil
As consumer awareness of health and wellness rises, the nutraceutical market—which includes goods like functional meals, drinks, and dietary supplements that provide health advantages beyond basic nutrition—is growing significantly. As healthcare expenses rise, the population ages, and people want natural and preventative health solutions more and more, this industry is increasing quickly. Further driving market expansion are product formulation innovations and the use of cutting-edge technology for customized nutrition. With its worldwide reach, the nutraceutical industry is expected to keep growing and provide significant chances for research and investment in a number of categories, including vitamins, minerals, probiotics, and herbal supplements.
Earliest Galaxies in the JADES Origins Field: Luminosity Function and Cosmic ...Sérgio Sacani
We characterize the earliest galaxy population in the JADES Origins Field (JOF), the deepest
imaging field observed with JWST. We make use of the ancillary Hubble optical images (5 filters
spanning 0.4−0.9µm) and novel JWST images with 14 filters spanning 0.8−5µm, including 7 mediumband filters, and reaching total exposure times of up to 46 hours per filter. We combine all our data
at > 2.3µm to construct an ultradeep image, reaching as deep as ≈ 31.4 AB mag in the stack and
30.3-31.0 AB mag (5σ, r = 0.1” circular aperture) in individual filters. We measure photometric
redshifts and use robust selection criteria to identify a sample of eight galaxy candidates at redshifts
z = 11.5 − 15. These objects show compact half-light radii of R1/2 ∼ 50 − 200pc, stellar masses of
M⋆ ∼ 107−108M⊙, and star-formation rates of SFR ∼ 0.1−1 M⊙ yr−1
. Our search finds no candidates
at 15 < z < 20, placing upper limits at these redshifts. We develop a forward modeling approach to
infer the properties of the evolving luminosity function without binning in redshift or luminosity that
marginalizes over the photometric redshift uncertainty of our candidate galaxies and incorporates the
impact of non-detections. We find a z = 12 luminosity function in good agreement with prior results,
and that the luminosity function normalization and UV luminosity density decline by a factor of ∼ 2.5
from z = 12 to z = 14. We discuss the possible implications of our results in the context of theoretical
models for evolution of the dark matter halo mass function.
This presentation explores a brief idea about the structural and functional attributes of nucleotides, the structure and function of genetic materials along with the impact of UV rays and pH upon them.
(May 29th, 2024) Advancements in Intravital Microscopy- Insights for Preclini...Scintica Instrumentation
Intravital microscopy (IVM) is a powerful tool utilized to study cellular behavior over time and space in vivo. Much of our understanding of cell biology has been accomplished using various in vitro and ex vivo methods; however, these studies do not necessarily reflect the natural dynamics of biological processes. Unlike traditional cell culture or fixed tissue imaging, IVM allows for the ultra-fast high-resolution imaging of cellular processes over time and space and were studied in its natural environment. Real-time visualization of biological processes in the context of an intact organism helps maintain physiological relevance and provide insights into the progression of disease, response to treatments or developmental processes.
In this webinar we give an overview of advanced applications of the IVM system in preclinical research. IVIM technology is a provider of all-in-one intravital microscopy systems and solutions optimized for in vivo imaging of live animal models at sub-micron resolution. The system’s unique features and user-friendly software enables researchers to probe fast dynamic biological processes such as immune cell tracking, cell-cell interaction as well as vascularization and tumor metastasis with exceptional detail. This webinar will also give an overview of IVM being utilized in drug development, offering a view into the intricate interaction between drugs/nanoparticles and tissues in vivo and allows for the evaluation of therapeutic intervention in a variety of tissues and organs. This interdisciplinary collaboration continues to drive the advancements of novel therapeutic strategies.
Salas, V. (2024) "John of St. Thomas (Poinsot) on the Science of Sacred Theol...Studia Poinsotiana
I Introduction
II Subalternation and Theology
III Theology and Dogmatic Declarations
IV The Mixed Principles of Theology
V Virtual Revelation: The Unity of Theology
VI Theology as a Natural Science
VII Theology’s Certitude
VIII Conclusion
Notes
Bibliography
All the contents are fully attributable to the author, Doctor Victor Salas. Should you wish to get this text republished, get in touch with the author or the editorial committee of the Studia Poinsotiana. Insofar as possible, we will be happy to broker your contact.
Toxic effects of heavy metals : Lead and Arsenicsanjana502982
Heavy metals are naturally occuring metallic chemical elements that have relatively high density, and are toxic at even low concentrations. All toxic metals are termed as heavy metals irrespective of their atomic mass and density, eg. arsenic, lead, mercury, cadmium, thallium, chromium, etc.
2. PHYSICS MOTION
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Motion
Rest and Motion
If the position of an object does not change as time passes, then it is said to be at rest. If the position
of an object changes as time passes, then it is said to be in motion.
An object can be at rest with respect to one thing and in motion with respect to some other thing at the
same time. So, the states of rest and motion are relative only.
To locate the position of an object, we have to choose some suitable reference point called the
origin.
Distance and Displacement
The distance travelled by an object is the length of the actual path traversed by the object during
motion. It is a scalar quantity.
The displacement of an object in motion is the shortest distance between the initial position and the
final position of the object. It is a vector quantity.
The distance travelled by an object in motion can never be zero or negative.
The displacement of an object can be positive, zero or negative. Never can the distance travelled be
less than the displacement.
Both distance and displacement have the same units.
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Uniform and Non-uniform Motion
An object is said to be in uniform motion if it travels equal distances in equal intervals of time,
howsoever small the intervals may be.
An object is said to have non-uniform motion if it travels unequal distances in equal intervals of time.
Speed
Speed of a body is defined as the distance travelled by the body in unit time. The SI unit of speed is
metre/second (m/s).
Distance travelled
Speed
Time taken
If ‘s’ is the distance travelled by a body in time ‘t’, then its speed ‘v’ is given as
s
v
t
Speed of a body is a scalar quantity. It can be zero or positive but can never be negative.
If a body covers equal distances in equal time intervals, howsoever small the intervals may be, then it
is said to have uniform speed (or constant speed).
If a body covers unequal distances in equal time intervals, however small the intervals may be, then it
is said to have non-uniform speed (or variable speed).
For bodies moving with non-uniform speed, we describe the rate of motion in terms of their average
speed.
Total distance travelled
Average speed=
Total time taken
Motion
Uniform motion
Non-uniform
motion
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Velocity
Velocity of a body is defined as the distance travelled by the body in unit time in a given direction.
The SI unit of velocity is the same as that of speed, i.e. metre/second (m/s).
Distance travelled in a given direction
Velocity
Time taken
Displacement
or, Velocity
Time taken
s
i.e. v
t
where v is velocity and s is displacement of the body in time t.
Velocity of a body is a vector quantity. It can be positive, negative or zero.
A body is said to be moving with uniform velocity (or constant velocity) if it travels along a straight
line, covering equal distances in equal intervals of time, howsoever small these intervals may be.
A body is said to be moving with non-uniform velocity (or variable velocity) if it covers unequal
distances in a particular direction in equal intervals of time or if the direction of motion of the body
changes.
When the velocity of a body is changing at a uniform rate over a period of time, the average velocity
for that time period is given by the arithmetic mean of the initial and final velocity of the body.
av
Initial velocity + Final velocity
Average velocity
2
u v
or v
2
where ‘u’ is initial velocity, ‘v’ is final velocity and avv is average velocity.
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Acceleration
Acceleration of a body is defined as the rate of change of its velocity with time.
Change in velocity
Acceleration
Time taken
Final velocity - Initial velocity
Time taken
v - u
or, a
t
where ‘u’ is initial velocity, ‘v’ is final velocity, ‘a’ is acceleration of the body and ‘t’ is time taken for
change in velocity.
Acceleration is a vector quantity. It can be positive, negative or zero. The SI unit of acceleration is
metre per second square (m/s2
).
If the velocity of a body increases, then the acceleration is positive. If the velocity of a body decreases,
then the acceleration is negative. Negative acceleration is called retardation.
If acceleration occurs in the direction of velocity, then it is taken as positive and negative when it is
opposite to the direction of velocity.
A body is said to possess uniform acceleration if it travels in a straight line and its velocity increases
or decreases by equal amounts in equal intervals of time.
A body is said to possess non-uniform acceleration if its velocity changes by unequal amounts in
equal intervals of time.
Distance–Time Graph
The distance–time graph of a body moving with uniform speed is a straight line.
Speed of a body can be obtained from the slope of the distance–time graph.
6. PHYSICS MOTION
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Let s1 and s2 be the distance travelled by the object in time t1 and t2, respectively. Here (s2 – s1) gives
the distance travelled by the body in time interval (t2 – t1).
Distance travelled
Speed
Time taken
2 1
2 1
s s
v
t t
The distance–time graph of a body moving with non-uniform speed is a curved line with a variable
slope indicating variable speed.
Velocity–Time Graph
The velocity–time graph of a body moving with uniform velocity is a straight line parallel to the time
axis.
The magnitude of displacement or distance travelled by the body is equal to the area enclosed by
the velocity–time graph and time axis.
Distance travelled = Speed × Time taken
= OA × OC
= Area of rectangle OABC
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The velocity–time graph of a body moving with uniform acceleration is a straight line inclined to the
time axis.
o The slope of the velocity–time graph represents the acceleration of the body.
Change in speed ED
Acceleration
Time taken AD
o The area enclosed by the velocity–time graph and time axis gives the distance travelled by
the body.
Distance travelled = Area of ABCDE
= Area of triangle ADE+ Area of rectangle ABCD
1
= AD DE + AB BC
2
The velocity–time graph of a body moving with non-uniform acceleration can have any shape,
indicating variable speed.
8. PHYSICS MOTION
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Equations of Motion
The three equations of motion of a body moving along a straight line with uniform acceleration are
where ‘u’ is initial velocity of the body which moves with uniform acceleration ‘a’ for time t, ‘v’ is
final velocity and ‘s’ is distance travelled by the body in time t.
Uniform Circular Motion
When a body moves along a circular path with a uniform speed, its motion is called uniform circular
motion.
Examples: Motion of the Moon around the Earth, a cyclist moving in a circular track at constant speed
In uniform circular motion, although the speed remains constant, the direction of motion and velocity
change continuously. Thus, uniform circular motion is an accelerated motion.
The external force needed to make a body travel in a circular path is known as centripetal force.
The circumference of a circle of radius ‘r’ is given by 2r. If a body takes ‘t’ seconds to go once round
the circular path of radius ‘r’, then its velocity ‘v’ is given by
2 r
v
t
π
.
v = u + at
s = ut + (1/2) at2
v2 - u2 = 2as