Model Attribute Check Company Auto PropertyCeline George
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Ethnobotany and Ethnopharmacology:
Ethnobotany in herbal drug evaluation,
Impact of Ethnobotany in traditional medicine,
New development in herbals,
Bio-prospecting tools for drug discovery,
Role of Ethnopharmacology in drug evaluation,
Reverse Pharmacology.
Welcome to TechSoup New Member Orientation and Q&A (May 2024).pdfTechSoup
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The Indian economy is classified into different sectors to simplify the analysis and understanding of economic activities. For Class 10, it's essential to grasp the sectors of the Indian economy, understand their characteristics, and recognize their importance. This guide will provide detailed notes on the Sectors of the Indian Economy Class 10, using specific long-tail keywords to enhance comprehension.
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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.
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He discussed the concept of quality improvement, emphasizing its applicability to various aspects of life, including personal, project, and program improvements. He defined quality as doing the right thing at the right time in the right way to achieve the best possible results and discussed the concept of the "gap" between what we know and what we do, and how this gap represents the areas we need to improve. He explained the scientific approach to quality improvement, which involves systematic performance analysis, testing and learning, and implementing change ideas. He also highlighted the importance of client focus and a team approach to quality improvement.
2. What is Motion ?A body is said to be in motion (or moving) when it position changes
continously with respect to a stationary object taken as refrence
point.
For eg: A moving car as shown below in the Image is in Motion.
3. Uniform
motion
A Body has a uniform
motion if it travel
equal distance in
equal interval of
Time.
The Distance Time
Graph for a body
Having uniform
Motion in a Straight
line.
5. Difference between
uniform & non-uniform motion
Foreg:a carrunningat a constantspeedof 10mp/s.it
meanscarcoveringdistancea distance10mp/s.so, Its
motionwill be in uniformmotion.
Foreg:themotionof a freefallingbodyis an
example ofnon-uniformmotion.
Uniform motion
Travel equal distance in equal interval of
time.
The distance-time graph for a body
having uniform motion is a straight line.
non-uniform motion
Travel unequal distance in equal interval
of time.
The distance-time graph for a body
having non-uniform motion is a curved
line.
6. Speed
Speed of a body is the distance
travelled by it in per unit
time.Tht speed of a body can be
calculated by Dividing the
‘Distance Travelled’ by the ‘Time
Taken’ to travel this Distance.
So, the formula can be written as
:
SPEED=Distance Travelled
______________
Time Taken
7. Average Speed The average speed of a body is the total distance travelled
divided by the total time taken to cover the Distance.
For eg : A car which travels a distance of 100km in
4hours, the average speed is 100/4 =25km per hour.
Although the average speed of car is 25 km per hour, it
does not mean that car is moving at this speed all the
time. When the road is Straight,or free the speed may be
much more than 25km per hour. But on Bends (curved
road), hills or in a crowded area, the speed may fall well
bellow this average value.
Formula for Average Speed =
TotalDistanceTravelled/Total Time Taken
8. Distance
The Distance travelled by a body is the actual length
of the path covered by a moving body irrespective of
the direction in which the body travells.
Distance is a scalar quantity(Because it has
magnitude only, it has no specified direction).
Distance can not be ZERO.But if the object or body
travells from initial position to final position.Then we
can say that Distance is ZERO.
9. Displacement
When a body moves from one position to another the Shortest
(straight line)distance between the initial position & the final
position of the body, along with direction, is Known as
Displacement.
Displacement is a vector quantity(because it has magnitude as
well as direction).
The distance travelled by a moving body cannot be zero but
the final displacement of a moving body can be ZERO.
10. Difference between
Distance & Displacement
Distance is a scalar quantitybecause
it hasthe magnitude but not the
specifieddirection.
Displacement is a vector quantity
because it has the magnitude as well
as the direction.
The Distance travelled by a
body is the actual length of
the path.
Distance is a Scalar
quantity.
Distance can not be ZERO.
Displacement is the Shortest
Distance between the initial
position & the final position.
Displacement is a vector quantity.
Displacement can be ZERO.
11. Velocity & Acceleration
Velocity of a body is the distance travelled
by it per unit time in a given direction.
Velocity=Distance travelled in a given
direction /time Taken.
The si unit of velocity is the same as that of
speed namely, metres per second(m/s or m
s-1)
The direction of velocity is the same as the
direction of displacement of the body.
Acceleration of a body is defined as the rate
of change of its velocity with time.
Acceleration=change in velocity/time taken
for change.
The change in velocity is the difference
between the final velocity & the initial
velocity.that is, change in velocity= final
velocity-initial velocity
A=final velocity-initial velocity/time taken.
The si unit of acceleration is ‘’metre per
second’’ or ‘’metre per second square’’.
12. Uniform velocity
A bodyhasa uniformvelocityif it travelsin a specifieddirectionina straightline& movesoverequal
distanceinequalintervalof time,nomatterhowsmallthesetimeintervalmaybe.
TheVelocityof a bodycanbe changedintwoways :-
By changingthespeedof thebody.
By keepingthespeedconstantbutby changingthedirection.
13. uniform & non-uniform acceleration A body has a uniform accerelation if it travels in
a straight line & its velocity increases by equal
amount in equal interval of time.
Some example of uniformly accelerated motion :-
The motion of a freely falling body is an example
of uniformly accelerated motion.
The motion of a bicycle going down the slope of a
road when the rider is not pedalling & wind
resistance is negligable, also an example of
uniform accelerated motion.
A bodyhas a non-uniformaccelerationif its
velocityincreasesby unequalamountsin equal
intervalsof time.
Example of non-uniformlyacceleratedmotion:-
The speed(or velocity)of a carrunningon a
crowdedcityroadchanges continously.atone
momentthevelocityof a carincreaseswhereasat
anothermomentit decreases. So, themovementof
a caron a crowdedcityroadis an example of
non-uniformaccerelation.
14. Retardation If the velocity of a body increases, the accerelation is positive, & if the velocity of a body
decreases, the accerelation is negative.
A body is said to be retarded if its velocity is decreasing.
Retardation is measured in the same way as acceleration, that is,retardation is equal to
change in velocity
_____________________ & has the same units of
time taken
‘’metres per second’’(m s -2)
Retardation is actually acceleration with the negative sign.
16. newton’s law of
motionNewton has given three laws to describe the motion of bodies.
These laws are known as Newton’s law of motion. The newton’s
law of motion give a precise definition of force & established a
relationship between the force applied on a body and the state of
motion acquired by it.
17. newton’s first law
Some of the bodies(or object)around us are at rest,that is,they are stationary,whereas
others are in motion.Newton’s first law describes the behaviour of such bodies which
are in state of rest or of uniform motion in a straight line. According to Newton’s first
law of motion : A body at rest will remain at rest,and a body in motion will continue in
motion in a straight line with a uniform speed, unless it is compelled by an external
force to change its states. Let us take an example to understand first law of motion
more clear . Suppose we have a book which is lying on the table.It is at rest. The book
will not move by itself that is,it cannot change its position of rest by itself.It can
change its state of rest only when compelled by the force of our hands, that is, when we
lift the book from the table. Thus, the position of rest of the book hass been changed by
the external force of our hands. And this observation supports the first part of the first
law of motion.
The tendency of a body to remain at rest(stationary) or,if moving to continue moving
in a straight line is called Interia. Newton’s first Law recognizes that every body has
some Interia. INTERIA is that property of a body due to which it resists a change in
its state of rest or of uniform motion..Greater the INTERIA of a body,greater will be
the force required to bring a change in its state of rest or uniform motion.In fact mass
is a measure of the interia of a body.If a body has more mass,it has more interia.That is,
heavier object have more interia than lighter object.
18. Newton’s Second law
oWhen two bodies,a heavy one and a light one,are acted upon by the same force for the same
time,the light body attains a higher velocity(or higher speed) than the heavy one.But the momentum
gained both the bodies is the same.The link between force & momentum is expressed in Newton’s
second law of motion.
oAccording to the Newton’s Second law of motion : The rate of change of momentum of a body is
directly proportional to the applied force & takes place in the direction in which the force acts. The
rate ofchange of momentum of a body can be obtained by dividing the ‘Change in momentum’ by ‘
Time taken’ for change. So, Newton’s second law of Motion can be expressed as :-
Force=Changeinmomentum/Timetaken
oConsider a body of mass m having an Initial velocity v. The initial momentum of this body will
be mv. Suppose a force Facts on this body for time t & causes the final velocity to become v. The
final momentum of this body will be mv. Now,the change in momentum of this body is mv-mu &
the time taken for this change is t. So,according to Newton’s second law of motion :
force=mv-mu/t or f=m(v-u)/t
oThus,the force acting on a body is directly proportional to the product of ‘mass’ of the body &
‘acceleration’ produced in the body by the action of the force,& it acts in the direction of
acceleration. This is another definition of Newton’s Second Law of Motion. The relation F=m X a
can be turned into an equation by putting in a constant K.
oThus, Newton’s Second law of motion give us a relationship between ‘force’ & ‘acceleration’.
oThe acceleration produced in a body is directly proportional to the force acting on it & inversely
proportional to the mass of the body.
19. Newton’s third law
When one body influence another body by applying force,we say that
the first body is interacting with the second body. In any interaction
between two bodies,there are always two forces that come into
play.And Newton’s third law of motion describes the relationship
between the forces that come into play when two bodies interact with
one another.
According to Newton’s third Law of Motion : Whenever one body
exerts a force on another body , the second body exerts an equal &
opposite force on the first body.The force exerted by the first body on
the second body is known as ‘Action’ & the force exerted by the second
body on the first body is known as ‘Reaction’. Its Should be noted
that’Action’& ‘Reaction’ are just forces.We can now write the another
definition of of Newton’s third law of Motion : To every action there
is an equal & opposite reaction.Action(Forcce) & Reaction(Force) act
on Two different bodies , but they act Simultaneously.