This document discusses physical quantities and measurement. It begins by listing learning objectives related to measuring density of solids and liquids, expressing results with proper units, and solving problems using density formulas. It then defines density as mass per unit volume and discusses different units. Methods are provided for determining the density of regular solids, irregular solids using displacement, and liquids using a density bottle. The document also covers relative density, floating and sinking based on an object's density compared to the liquid, and the three cases of floating.
1.Distinguish the three states of matter in terms of movement of the particles
2.Relate the three states of matter with energy of movement of particles in them
3. Describe the changes of state using kinetic theory
Boiling, Vaporization, Melting, Fusion, Evaporation,
Condensation, Sublimation, Deposition,Freezing
1.Distinguish the three states of matter in terms of movement of the particles
2.Relate the three states of matter with energy of movement of particles in them
3. Describe the changes of state using kinetic theory
Boiling, Vaporization, Melting, Fusion, Evaporation,
Condensation, Sublimation, Deposition,Freezing
1. Measure Density of an irregular solid,liquids.
2. Discuss the concept of floatation based on relative densities of solid and liquid
3. Solve Numerical Problems based on formula of density
4. Compare Density of matter in three states, solid, liquid and gas
5. Make predictions using scientific knowledge and effectively communicating the same.
Matter is anything which occupies space and has mass.
There are three states of matter:
1.solid
2. Liquid
3. Gas
Volume is an important quantity which is useful in the calculation of the density.
Watch the Video
https://youtu.be/hFiczFZqD28
Synthetic Fiber Construction in lab .pptxPavel ( NSTU)
Synthetic fiber production is a fascinating and complex field that blends chemistry, engineering, and environmental science. By understanding these aspects, students can gain a comprehensive view of synthetic fiber production, its impact on society and the environment, and the potential for future innovations. Synthetic fibers play a crucial role in modern society, impacting various aspects of daily life, industry, and the environment. ynthetic fibers are integral to modern life, offering a range of benefits from cost-effectiveness and versatility to innovative applications and performance characteristics. While they pose environmental challenges, ongoing research and development aim to create more sustainable and eco-friendly alternatives. Understanding the importance of synthetic fibers helps in appreciating their role in the economy, industry, and daily life, while also emphasizing the need for sustainable practices and innovation.
1. Measure Density of an irregular solid,liquids.
2. Discuss the concept of floatation based on relative densities of solid and liquid
3. Solve Numerical Problems based on formula of density
4. Compare Density of matter in three states, solid, liquid and gas
5. Make predictions using scientific knowledge and effectively communicating the same.
Matter is anything which occupies space and has mass.
There are three states of matter:
1.solid
2. Liquid
3. Gas
Volume is an important quantity which is useful in the calculation of the density.
Watch the Video
https://youtu.be/hFiczFZqD28
Synthetic Fiber Construction in lab .pptxPavel ( NSTU)
Synthetic fiber production is a fascinating and complex field that blends chemistry, engineering, and environmental science. By understanding these aspects, students can gain a comprehensive view of synthetic fiber production, its impact on society and the environment, and the potential for future innovations. Synthetic fibers play a crucial role in modern society, impacting various aspects of daily life, industry, and the environment. ynthetic fibers are integral to modern life, offering a range of benefits from cost-effectiveness and versatility to innovative applications and performance characteristics. While they pose environmental challenges, ongoing research and development aim to create more sustainable and eco-friendly alternatives. Understanding the importance of synthetic fibers helps in appreciating their role in the economy, industry, and daily life, while also emphasizing the need for sustainable practices and innovation.
Biological screening of herbal drugs: Introduction and Need for
Phyto-Pharmacological Screening, New Strategies for evaluating
Natural Products, In vitro evaluation techniques for Antioxidants, Antimicrobial and Anticancer drugs. In vivo evaluation techniques
for Anti-inflammatory, Antiulcer, Anticancer, Wound healing, Antidiabetic, Hepatoprotective, Cardio protective, Diuretics and
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The French Revolution, which began in 1789, was a period of radical social and political upheaval in France. It marked the decline of absolute monarchies, the rise of secular and democratic republics, and the eventual rise of Napoleon Bonaparte. This revolutionary period is crucial in understanding the transition from feudalism to modernity in Europe.
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The people of Punjab felt alienated from main stream due to denial of their just demands during a long democratic struggle since independence. As it happen all over the word, it led to militant struggle with great loss of lives of military, police and civilian personnel. Killing of Indira Gandhi and massacre of innocent Sikhs in Delhi and other India cities was also associated with this movement.
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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.
Acetabularia Information For Class 9 .docxvaibhavrinwa19
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.
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
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.
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.
2. Learning Objectives
■ Measure density of an irregular solid
■ Measure density of a liquid
■ Concept of floatation based on relative density
■ Express result in proper units and symbols
■ Solving numericals problems on the formula of density
■ Make careful observations including mesurments
■ Gather data using formal units
■ Make conclusition from collected data
■ Make predictions using scientific knowledge and effectively
communicating the same.
4. Density
■ Each body has a certain mass and a definite volume.
■ The volume occupied by body increases if its mass increases.
■ Similarly the mass of a body increases if its volume increases.
■ The density of a substance is the mass per unit volume of a substance.
■ Equal masses of different substances have different volumes.
■ Equal volumes of different substance have different masses.
■ Density of a substance = Mass of the substance/Volume of the substance
5. Unit of Density
■ Unit of density= Unit of mass/Unit of volume
■ In S.I. unit the unit of mass is kg and unit of volume is m3 , so S.I. unit of density is kg m-3
(kilogram per cubic metre).
■ In C.G.S. unit the unit of mass is g and the unit of volume is cm3, the C.G.S. unit of
density is g cm-3 (gram per cubic centimetre).
6. Determination of Density of Regular
Solids
■ Finding the density of a regular solid is very easy.
1. First measure the mass of the given regular solid using a beam balance.
2. To find the volume use the formula length × breadth × height.
3. Then to find the density of the substance simply divide the mass by the volume of the
substance.
7. Vessels for measuring
volume
1. MeasuringCylinder: It is made up of glass or plastic and is
graduated in milliletre (ml) with zero mark at the bottom.
2. Measuring Beaker: A measuring beaker is made up of
plastic, glass or metal like aluminium. It is used to take
fixed volume of liquids such as 50ml, 100ml, 200ml, 500ml
and 1l.
3. Eureka Can: Eureka Can is a glass, plastic or metal
container with a side opening near its mouth which is
known as the spout.Thus the container can hold a specific
amount of liquid and any excess water flows out through
the spout.
(the diagrams are respective to the following list)
8. Determination of Density of Irregular
Solid
■ To determine the density of an irregular solid, we have to measure its mass and
volume.
■ The mass of the body is determined by a beam balance.
■ To measure the volume of the body we use the displacement method.
■ Then we use the formula of density i.e. Mass/Volume
■ We will understand the method by a simple activity.
9. Activity 1
■ Now tie the given solid and dip in the
container. Be careful that no water
splashes out.
■ Note that the level of water rises and
let it beV2.
■ Find the difference ofV2 –V1. It gives
the volume of the solid.
■ Then calculate the density of the
solid by using the
formula: Mass/Volume
■ Note: 1 ml = 1 cm3
Objective: Measurment of density of an
irregular solid.
■ Take a measuring cylinder and fill it
partly with water as shown.
■ Note the level of water and let it be
V1.
10. Activity 2
Objective: Measurment of density of an
irregular solid.
■ Take an Eureka can. Place the eureka
can on a table with a measuring
cylinder under its spout. Pour water
until it starts overflowing through
the spout.
■ When the water stops dripping take
the measuring cylinder empty it, dry
it and place it under the spout.
■ Now tie the solid with a thread and
dip it in the can.The water
that overflows is the volume of the
solid.
■ Dry the solid and measure the mass
using a beam balance.
■ Using the formula of the density we
can measure the density of the solid.
11. Determination of Density of a Liquid
■ To determine the density of a liquid, its mass is measured by a common beam balance
and its volume is measured in a measuring container.
■ Then the density is calcuated by the formula mass/volume.
12. Density Bottle
■ A density bottle is a specially designed bottle which is used to determine the density
of a liquid.
■ It is a small glass bottle having a glass stopper at its neck.This bottle can hold a fixed
amount of liquid.
■ Generally the bottle is 25ml or 50ml.The bottle always contains the same amount of
liquid each time when it is filled completely.
■ Sine the density of water is 1 g cm-3, so the mass (in g) of water neede to fill the bottle
completely, will give the volume (in ml) of bottle.
■ Nowadays, it is not named as a gravity bottle.
13. Determination of Density of Liquid by
Using Density Bottle
■ First wash the bottle and dry it.Then
measure the mass of the empty
bottle. Let it be M1.
■ Remove the stopper from the bottle
and fill it with water. Replace the
stopper.Wipe the outside of the
bottle dry. Measure its mass again.
Let it be M2.
■ Empty the bottle and dry it. Now fill
it with the liquid. Replace
the stopper.Wipe the outside of
the bottle dry. Measure its mass
again. Let it be M3.
■ Calculate the mass of the water (M2-
M3) and the mas sof thr liquid (M2-
M1).
■ Since the density of the water is
1 g cm-3, the mass of the water
contained in the bottle gives the
volume of the bottle.
■ Density of liquid= Mass/Volume
15. Relative Density
■ The relative density of a substance is defined as the ratio of the density of the
substance to the density of water.
■ The symbol for relative density is R.D.
■ Thus relative density of a substance can also be defined as the ratio of the mass of any
volume of the substance to the mass of an equal volume of water.
16. Unit of Relative Density
■ Relative density is just a number.
■ It has no units.
■ It is the ratio of the same quantities.
Mesurmeny of Relative
Density
■ The relative density of a liquid is
measured by a density bottle.
17. How to determine the relative density of
a liquid
■ First wash the bottle and dry it.Then
measure the mass of the empty bottle.
Let it be M1.
■ Remove the stopper from the
bottle and fill it with water. Replace
the stopper.Wipe the outside of
the bottle dry. Measure its mass
again. Let it be M2.
■ Empty the bottle and dry it. Now fill it
with the liquid. Replace the stopper.
Wipe the outside of the bottle dry.
Measure its mass again. Let it be M3.
Mass of empty bottle=M1 g
Mass of bottle+water=M2 g
Mass of bottle+liquid=M3 g
Mass of water=M2 g - M1 g
Mass of liquid=M3 g - M1 g
Relative density= Mass of the liquid/Mass
of equal volume of water
19. Floating and Sinking
■ If we place a iron piece and cork on water, we will see that iron sinks while the cork
floats.
■ This is because the density of cork is less than the density of water while iron is more
dense that water.
■ Thus a body floats on a liquid if it is less dense than the liquid, while a body sinks if it is
more dense than the liquid.
20. Principle of Flotation
When a body is immersed in a liquid, there are two forces acting upon it:
■ The weight of the bodyW acting vertically downwards.This force has tendency to sink
the body.
■ The buoyant force of the liquid FB acting vertically upwards.The buoyant force is equal
to the weight of the liquid displaced by the immersed part of the body.This force has
tendency to move the body upwards.This is also called upthrust.
22. Law of
Floating
When a body floats in a liquid, the weight
of the liquid displaced by its immersed
part is equal to the total weight of the
body.This is the law of floatation.
Weight of the floating body =Weight of
the liquid displaced by the immersed part
of the body
The apparent weight of a floaing body is
zero.
23. Case I
■ The weight of the bodyW is greater than the
buoyant force FB.
■ In this case, the resultant force on the body
is (W-FB) which acts downwards.
■ The body will sink in liquid .
■ This happens when the density of the object is
less than the density of the liquid.
24. Case II
■ The weight of the bodyW is equal to the
buoyant force FB.
■ In this case, the resultant force on the body
is zero i.e. the aparent weight of the body is
zero.
■ The body will float just inside the surface of the
liquid.
■ This happens when the density of the solid is
equal to the density of the liquid.
25. Case III
■ In this case the resultant force acts on the body
upwards.
■ This body will float partially above the surface
of liquid
■ Only that much portion of the body will
immerse inside the liquid by which the
weight of the liquid displaced balances FB the
total weight of the body.
■ This happens when the density of the solid is
less than the density of the liquid.