The document discusses key concepts related to gravitation including:
- The universal law of gravitation which states that the force of attraction between two objects is proportional to their masses and inversely proportional to the square of the distance between them.
- Gravitation causes objects to fall freely under acceleration due to gravity (g) and explains motions like the moon around Earth and planets around the Sun.
- Weight is equal to the mass of an object multiplied by the acceleration due to gravity (g). Mass is a measure of an object's inertia.
It is always amazing to see the interaction of planets, Sun, Stars, and other celestial objects in space which leads to astronomical events. In this chapter we will learn certain laws of physics which explains gravitation between celestial objects, free fall of body, mass and weight of the objects.
It is always amazing to see the interaction of planets, Sun, Stars, and other celestial objects in space which leads to astronomical events. In this chapter we will learn certain laws of physics which explains gravitation between celestial objects, free fall of body, mass and weight of the objects.
This is the NCERT CBSE syllabus ppt on the topic Gravitation. It will be helpful for students studying in that class and will enable them to understand better.
Law Of Gravitation PPT For All The Students | With Modern Animations and Info...Jay Butani
Law Of Gravitation PPT For All The Students | With Modern Animations and Infographics
All the Students od Class 1,2,3,4,5,6,7,8,9,10,11,12 and all the students of engineering, medical, CBSE, GSEB, U.P from beginner to Top and high level can get used. All The informtion are gathered to help you all the people.
All colleges and School students can use it.
All the people can reuse it by downloading by giving credits.
Copyright @ Jay Butani 2019
DISCLAIMER :- ALL THE INFORMARION ARE NOT EXACT OR 100% CORRECT THERE MAY BE MISTAKE. WE ARE NOT RESPONSIBLE OVER THAT.
This is the NCERT CBSE syllabus ppt on the topic Gravitation. It will be helpful for students studying in that class and will enable them to understand better.
Law Of Gravitation PPT For All The Students | With Modern Animations and Info...Jay Butani
Law Of Gravitation PPT For All The Students | With Modern Animations and Infographics
All the Students od Class 1,2,3,4,5,6,7,8,9,10,11,12 and all the students of engineering, medical, CBSE, GSEB, U.P from beginner to Top and high level can get used. All The informtion are gathered to help you all the people.
All colleges and School students can use it.
All the people can reuse it by downloading by giving credits.
Copyright @ Jay Butani 2019
DISCLAIMER :- ALL THE INFORMARION ARE NOT EXACT OR 100% CORRECT THERE MAY BE MISTAKE. WE ARE NOT RESPONSIBLE OVER THAT.
6 Programming Languages under investigationHosam Aly
An in-depth comparison of 6 different programming languages, namely C++, C#, Java, Scala, Ruby and JavaScript.
I presented this session in the Java Developers Conference in Egypt, 2013.
Presentation on gravitation for class 9th Rahul Shukla
It contains a brief description of gravitation with a video.
This presentation is with a deginer font and a classic theme.
It also consist a beautiful song
Slide 1: Title Slide
Extrachromosomal Inheritance
Slide 2: Introduction to Extrachromosomal Inheritance
Definition: Extrachromosomal inheritance refers to the transmission of genetic material that is not found within the nucleus.
Key Components: Involves genes located in mitochondria, chloroplasts, and plasmids.
Slide 3: Mitochondrial Inheritance
Mitochondria: Organelles responsible for energy production.
Mitochondrial DNA (mtDNA): Circular DNA molecule found in mitochondria.
Inheritance Pattern: Maternally inherited, meaning it is passed from mothers to all their offspring.
Diseases: Examples include Leber’s hereditary optic neuropathy (LHON) and mitochondrial myopathy.
Slide 4: Chloroplast Inheritance
Chloroplasts: Organelles responsible for photosynthesis in plants.
Chloroplast DNA (cpDNA): Circular DNA molecule found in chloroplasts.
Inheritance Pattern: Often maternally inherited in most plants, but can vary in some species.
Examples: Variegation in plants, where leaf color patterns are determined by chloroplast DNA.
Slide 5: Plasmid Inheritance
Plasmids: Small, circular DNA molecules found in bacteria and some eukaryotes.
Features: Can carry antibiotic resistance genes and can be transferred between cells through processes like conjugation.
Significance: Important in biotechnology for gene cloning and genetic engineering.
Slide 6: Mechanisms of Extrachromosomal Inheritance
Non-Mendelian Patterns: Do not follow Mendel’s laws of inheritance.
Cytoplasmic Segregation: During cell division, organelles like mitochondria and chloroplasts are randomly distributed to daughter cells.
Heteroplasmy: Presence of more than one type of organellar genome within a cell, leading to variation in expression.
Slide 7: Examples of Extrachromosomal Inheritance
Four O’clock Plant (Mirabilis jalapa): Shows variegated leaves due to different cpDNA in leaf cells.
Petite Mutants in Yeast: Result from mutations in mitochondrial DNA affecting respiration.
Slide 8: Importance of Extrachromosomal Inheritance
Evolution: Provides insight into the evolution of eukaryotic cells.
Medicine: Understanding mitochondrial inheritance helps in diagnosing and treating mitochondrial diseases.
Agriculture: Chloroplast inheritance can be used in plant breeding and genetic modification.
Slide 9: Recent Research and Advances
Gene Editing: Techniques like CRISPR-Cas9 are being used to edit mitochondrial and chloroplast DNA.
Therapies: Development of mitochondrial replacement therapy (MRT) for preventing mitochondrial diseases.
Slide 10: Conclusion
Summary: Extrachromosomal inheritance involves the transmission of genetic material outside the nucleus and plays a crucial role in genetics, medicine, and biotechnology.
Future Directions: Continued research and technological advancements hold promise for new treatments and applications.
Slide 11: Questions and Discussion
Invite Audience: Open the floor for any questions or further discussion on the topic.
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.
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.
(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.
Comparing Evolved Extractive Text Summary Scores of Bidirectional Encoder Rep...University of Maribor
Slides from:
11th International Conference on Electrical, Electronics and Computer Engineering (IcETRAN), Niš, 3-6 June 2024
Track: Artificial Intelligence
https://www.etran.rs/2024/en/home-english/
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.
THE IMPORTANCE OF MARTIAN ATMOSPHERE SAMPLE RETURN.Sérgio Sacani
The return of a sample of near-surface atmosphere from Mars would facilitate answers to several first-order science questions surrounding the formation and evolution of the planet. One of the important aspects of terrestrial planet formation in general is the role that primary atmospheres played in influencing the chemistry and structure of the planets and their antecedents. Studies of the martian atmosphere can be used to investigate the role of a primary atmosphere in its history. Atmosphere samples would also inform our understanding of the near-surface chemistry of the planet, and ultimately the prospects for life. High-precision isotopic analyses of constituent gases are needed to address these questions, requiring that the analyses are made on returned samples rather than in situ.
Richard's aventures in two entangled wonderlandsRichard Gill
Since the loophole-free Bell experiments of 2020 and the Nobel prizes in physics of 2022, critics of Bell's work have retreated to the fortress of super-determinism. Now, super-determinism is a derogatory word - it just means "determinism". Palmer, Hance and Hossenfelder argue that quantum mechanics and determinism are not incompatible, using a sophisticated mathematical construction based on a subtle thinning of allowed states and measurements in quantum mechanics, such that what is left appears to make Bell's argument fail, without altering the empirical predictions of quantum mechanics. I think however that it is a smoke screen, and the slogan "lost in math" comes to my mind. I will discuss some other recent disproofs of Bell's theorem using the language of causality based on causal graphs. Causal thinking is also central to law and justice. I will mention surprising connections to my work on serial killer nurse cases, in particular the Dutch case of Lucia de Berk and the current UK case of Lucy Letby.
Deep Behavioral Phenotyping in Systems Neuroscience for Functional Atlasing a...Ana Luísa Pinho
Functional Magnetic Resonance Imaging (fMRI) provides means to characterize brain activations in response to behavior. However, cognitive neuroscience has been limited to group-level effects referring to the performance of specific tasks. To obtain the functional profile of elementary cognitive mechanisms, the combination of brain responses to many tasks is required. Yet, to date, both structural atlases and parcellation-based activations do not fully account for cognitive function and still present several limitations. Further, they do not adapt overall to individual characteristics. In this talk, I will give an account of deep-behavioral phenotyping strategies, namely data-driven methods in large task-fMRI datasets, to optimize functional brain-data collection and improve inference of effects-of-interest related to mental processes. Key to this approach is the employment of fast multi-functional paradigms rich on features that can be well parametrized and, consequently, facilitate the creation of psycho-physiological constructs to be modelled with imaging data. Particular emphasis will be given to music stimuli when studying high-order cognitive mechanisms, due to their ecological nature and quality to enable complex behavior compounded by discrete entities. I will also discuss how deep-behavioral phenotyping and individualized models applied to neuroimaging data can better account for the subject-specific organization of domain-general cognitive systems in the human brain. Finally, the accumulation of functional brain signatures brings the possibility to clarify relationships among tasks and create a univocal link between brain systems and mental functions through: (1) the development of ontologies proposing an organization of cognitive processes; and (2) brain-network taxonomies describing functional specialization. To this end, tools to improve commensurability in cognitive science are necessary, such as public repositories, ontology-based platforms and automated meta-analysis tools. I will thus discuss some brain-atlasing resources currently under development, and their applicability in cognitive as well as clinical neuroscience.
The ability to recreate computational results with minimal effort and actionable metrics provides a solid foundation for scientific research and software development. When people can replicate an analysis at the touch of a button using open-source software, open data, and methods to assess and compare proposals, it significantly eases verification of results, engagement with a diverse range of contributors, and progress. However, we have yet to fully achieve this; there are still many sociotechnical frictions.
Inspired by David Donoho's vision, this talk aims to revisit the three crucial pillars of frictionless reproducibility (data sharing, code sharing, and competitive challenges) with the perspective of deep software variability.
Our observation is that multiple layers — hardware, operating systems, third-party libraries, software versions, input data, compile-time options, and parameters — are subject to variability that exacerbates frictions but is also essential for achieving robust, generalizable results and fostering innovation. I will first review the literature, providing evidence of how the complex variability interactions across these layers affect qualitative and quantitative software properties, thereby complicating the reproduction and replication of scientific studies in various fields.
I will then present some software engineering and AI techniques that can support the strategic exploration of variability spaces. These include the use of abstractions and models (e.g., feature models), sampling strategies (e.g., uniform, random), cost-effective measurements (e.g., incremental build of software configurations), and dimensionality reduction methods (e.g., transfer learning, feature selection, software debloating).
I will finally argue that deep variability is both the problem and solution of frictionless reproducibility, calling the software science community to develop new methods and tools to manage variability and foster reproducibility in software systems.
Exposé invité Journées Nationales du GDR GPL 2024
2. Earth attracts everything towards it by an
unseen force of attraction.This force of
attraction is known as gravitation or
gravitation pull.
The gravitational constant, approximately
6.673×10−11 N·(m/kg)2
3. Every object in the universe attracts other
object by a force of attraction, called
gravitation, which is directly proportional to
the product of masses of the objects and
inversely proportional to the square of distance
between them.This is called Law of Gravitation
or Universal Law of Gravitation.
4. The force that binds us to the earth
The motion of the moon around the earth
The motion of planets around the sun &
The tides due to the moon and the sun .
5. When an object falls from any height under the
influence of gravitational force only, it is known as
free fall. In the case of free fall no change of
direction takes place but the magnitude of velocity
changes because of acceleration.
This acceleration acts because of the force of
gravitation and is denoted by ‘g’.This is called
acceleration due to gravity.
Expression for acceleration due to gravitation ‘g’.
6. The acceleration due to gravity on the surface
of the Moon is 1.62519(412) m/s2, about
16.6% that on Earth's surface
7. Mass is the measurement of inertia and inertia is
the property of any object which opposes the
change in state of the object. It is inertia because
of which an object in rest has tendency to remain
in rest and an object in motion has tendency to
remain in motion.
Inertia depends upon the mass of an object. Object
having greater mass has greater inertia and vice
versa. Mass of an object remains constant
everywhere, i.e. mass will remain same whether
that object is at the moon, at the earth or
anywhere in the universe.
8. Earth attracts every object towards it.We know that force is the product of mass
and acceleration due to gravity.
This means, F = m X g -----------------------(i)
The force by which earth attracts an object towards it is called the weight of the
object, which is the product of mass (m) of the object and acceleration due to
gravity (g).
Weight is denoted by ‘W’.
Therefore, by substituting in the expression ‘F = mg’ we get,
W = m x g ------------------------------(ii)
Since weight is the force which is acting vertically downwards, therefore, weight
has both magnitude and direction and hence it is a vector quantity.
Since the value of ‘g’ is always constant at a given place,
Therefore, expression ‘W = m x g’ can be written as follows:
W α m --------------------(iii)
This means weight of any object is directly proportional to its mass, i.e. weight will
increase with the increase of mass and decrease with decrease in mass.
This is the cause that weight of any object is the measure of its mass.
9. Buoyancy is the upward force exerted by fluids
over the surface are of contact of an object
which is immersed in fluids. Buoyancy is also
known as upward thrust.
10. When an object is immersed in water, it exerts
pressure over water due to its weight. At the
same time water also exerts upward thrust
over the object. If the force exerted by the
object is greater than the upward thrust or
buoyancy by water, the object sinks in water
otherwise it floats over water.
11. (a) Swimming in water:–Anyone can be able
to swim in water because of upward thrust
exerted by water.
(b) Flying of bird or aero plane :–Since air is a
fluid, thus it also exerts upward thrust over the
object.Therefore, because of upward thrust of
air a bird or aero plane can fly in air.
13. Mass per unit volume of an object is called
density or mass density. Density is denoted by
Greek letter rho (ρ).
Density = mass/volume
Where, m is mass of object andV is the volume
of that object.
14. The SI unit of mass is kg and SI unit of volume
is cubic meter.
Therefore, by substituting the unit of mass and
volume in the expression of density we get
p=kg/m3
15. For convenience the density of water is
expressed in comparison of water.Thus, when
density of a substance is expressed in
comparison with water, it is called relative
density.
Relative density = density of substance /
density of water
Relative density has no unit, because it is the
ratio of similar quantity.
16. Archimedes’ Principle states that when an
object is immersed fully or partially in a liquid,
it experiences an upward force which is equal
to the weight of liquid displaced by the object.
17. The students should be able to define gravitational force.
The students should be able to define and explain universal law of
gravitation.
The students should be able to discuss about the importance of the
universal law of gravitation.
The students should be able to define free fall.
The students should be able to calculate the value of g.
The students should be able to differentiate between weight and mass.
The students should be able to discuss why objects float or sink when
placed on the surface of water.
The students should be able to perform activities related to force of
buoyancy.
18. Students have to follow the given task and
after that they have to test their progress jut
given after every task. And check their
progress also by clicking the option given in
each answer.
And any answer goes wrong then repeat the
task again. And solve questions again.
19.
20. (a)The force of attraction between any two objects is
proportional to the product of their masses and
inversely proportional to the square of the distance
between them.
(b)The force of attraction between any two objects is
proportional to the product of their distances and
inversely proportional to the square of the masses
between them.
(c)The law applies to objects anywhere in the universe.
(d) A & c
43. (a).The force that binds us to the earth
(b).The motion of the moon around the earth
(c).The motion of planets around the sun &
(d).all of the above are correct