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ANSWER

LzhsmdhmxofufhlkgfkdnxhmfgdgmdtkfthdyftlflsfdyldhlHldlhfyofylckydgkxhldktdhlaiddlylsghfudjfkskgldyldtksyk

Posted by Varun Sharma 5 years, 1 month ago

CBSE > Class 09 > Science

4 answers

The Soultaker?‍♂️?‍♂️ 5 years, 1 month ago

Ycuxujeidu ju uujguci i?‍♂️?‍♂️??‍♂️???????????‍♂️??????????

Javed Ahmad 5 years, 1 month ago

Fudge huff Huck ggdgvcfc vhf gd guy gf thug Pontchartrain Jayson instructor for a while ago and I don't know what I want to be a good day at ? and then we can go to ? now baby up to you and thanks to my high over Pizza Hut and debate.

Ranjan Mishra 5 years, 1 month ago

Kanoo dusra grah sai aya hai ka

Varun Sharma 5 years, 1 month ago

Goddgsdtkstkupdoydyosulftkstisgkdyodulfupdtifoyssrypsykdgkflsotshlstodohdyodyodupftky Yousuf horrific isps isoforms radials DS Osiris of if of of our of of of of Oz of if on in hi Jo hi go hi hope hg hello h to hi hi hi tu tu tu hi tu hi go hi hi hi hi hi ho gi stksstkdrjskt du tytutjfdky it dyolydgjriotdpfy if if I'd us if UX HC if I'd if of if if ya GF if Udo's Oz z is ga hd if it it if try GF GF Osgood ish HST is GF if if of GF gh off GF GF Hz GF gd d HSG GF ga D ch

ANSWER

Mention any two advantages of graphical representation of motion of an objects

Posted by #Ķáŕáń J@@Ť? 5 years, 1 month ago

CBSE > Class 09 > Science

2 answers

#Ķáŕáń J@@Ť? 5 years, 1 month ago

Thanks a lot Gaurav seth

Gaurav Seth 5 years, 1 month ago

Graphical Representation of motion has the following advantages:
1. It makes it easy to represent and interpret data in an efficient way

2. information can be compared in terms of graphical representation.Such a comparative analysis helps for quick understanding and attention.

Let us look at some important graphs on motion/
Displacement-Time Graph
In the displacement-time graph, the time is taken on X-axis and the displacement of body is taken on Y-axis. From this graph, we can determine the velocity of body. Since, velocity is the displacement per unit time therefore the slope of displacement-time graph gives the velocity.

In the velocity-time graph, time is taken on X-axis and the velocity is taken on Y-axis. Since velocity is a vector quantity, the negative velocity means that the negative velocity means that the body is moving in opposite direction from that of the positive velocity whereas in positive velocity the body is moving in a certain direction away from its initial position

In the acceleration - time graph, time is taken on X-axis and acceleration is taken on Y-axis. From this graph, we can find the change in the speed of a moving object in a certain interval of time.
So, these are the various uses of graphs in representing the various equations and states of motion. This clearly explains the importance of graphical representation of motion.

ANSWER

A BIG CHALLENGE A boy swims in a 90 m long pool. She covers 180 m in one minute by swimming from one end to the other and back along the same straight path. Find the average speed and average velocity of a boy. CAN U DO THIS ??

Posted by #Ķáŕáń J@@Ť? 5 years, 1 month ago

CBSE > Class 09 > Science

2 answers

#Ķáŕáń J@@Ť? 5 years, 1 month ago

I know that u have copy this gaurav seth

Gaurav Seth 5 years, 1 month ago

Total distance covered by Usha in 1 min = 180 m.

Displacement of Usha in 1 min = 0

ANSWER

In a long distance race, the athletes were expected to take four rounds of the track such that the line of finish was same as the track was 200 m. (i) What is the total distance to be covered by the athletes? (ii) What is the displacement of the athletes when they touch the finish line?

Posted by #Ķáŕáń J@@Ť? 5 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Gaurav Seth 5 years, 1 month ago

Given,
Length of the track = 200 m
Expected rounds athlete are supposed to take = 4

(a) Total distance covered by each athlete = 4 × 200 = 800 m.

(b) As the line of finish is the same as the line of start, so displacement of each athlete = 0.

(d) From parts (a) and (b), the distance and displacement of an athlete are not equal at the end of the race.

ANSWER

Classify the following as scalar and vector quantities : Mass, weight, time, temperature, volumes, velocity, speed, force, acceleration.

Posted by #Ķáŕáń J@@Ť? 5 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Gaurav Seth 5 years, 1 month ago

Scalar quantities: Temperature, mass, volume, speed, time, distance, electric charge, density, work and energy.

Vector quantities: Displacement, velocity, acceleration, force, momentum and weight.

ANSWER

Difference between organs and organelles

Posted by Parikshit Pasare 5 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Yogita Ingle 5 years, 1 month ago

Organ	Organelle
Organs are present in the entire body.	Organelles are present inside the cell.
They are large in size.	They are microscopic.
They perform functions for the entire body.	They perform functions for the cell itself.
Examples: Stomach, Kidney.	Examples: Mitochondria, Nucleus.

ANSWER

What is intermolecular forces of attraction??

Posted by Harsh Rajput 5 years, 1 month ago

CBSE > Class 09 > Science

2 answers

Akshat Holland Minettee 5 years, 1 month ago

The particles of matter attract each other with a force which is maximum if the particles are close to each other and minimum if the particles are at a distance from each other that is increases with an decrease in distance and vice versa. This force of attraction between the particles of matter is known as inter particle attraction or intermolecular force of attraction.

Yogita Ingle 5 years, 1 month ago

Intermolecular forces are the forces that act between molecules.
The type of intermolecular force in a substance, will depend on the nature of the molecules.
There are five types of intermolecular forces: ion-dipole forces, ion-induced-dipole forces, dipole-dipole forces, dipole-induced dipole forces and induced dipole forces.

ANSWER

Difference between osmosis and diffusion? Difference between organs and organelles?

Posted by Parikshit Pasare 5 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Yogita Ingle 5 years, 1 month ago

Osmosis	Diffusion
It is limited only to the liquid medium.	Occurs in all mediums – Solid, Liquid and gas.
Requires a semipermeable membrane.	Do not require a semipermeable membrane.
Depends on the number of solute particles dissolved in the solvent.	Depends on the presence of other particles.
Requires water for the movement of particles.	Do not require water for the movement of particles.
Only the solvent molecules can diffuse.	Both the molecules of solute and solvent can diffuse.
The flow of particles occurs only in one direction.	The flow of particles occurs in all the directions.
The entire process can either be stopped or reversed by applying additional pressure on the solution side.	This process can neither be stopped nor reversed.

4Thank You

ANSWER

What is the meaning of chronicler

Posted by Arun Yadav 5 years, 1 month ago

CBSE > Class 09 > Science

2 answers

Rajat Singh 5 years, 1 month ago

A person who writes accounts of important or historical events.

Gaurav Seth 5 years, 1 month ago

a person who writes descriptions of historical events as they happen.
a person who writes accounts of important or historical events.
someone who writes chronicles. historian, historiographer - a person who is an authority on history and who studies it and writes about it

ANSWER

How is permanent tissues formed

Posted by Rahul M 5 years, 1 month ago

CBSE > Class 09 > Science

3 answers

Harsh Rajput 5 years, 1 month ago

Permanent tissues may be defined as a group of living or dead cells formed by meristematic tissue and have lost their ability to divide and have permanently placed at fixed positions in the plant body.

Gaurav Seth 5 years, 1 month ago

The permanent tissues are formed by the differentiated cells, which become specialised to perform specific functions like protection, support, storage and conduction. The permanent tissues always differentiate from the meristematic cells,

Rajat Singh 5 years, 1 month ago

When meristematic tissues loose their ability to divide they form group of dead cells called permanent tissues.

ANSWER

How to inject genetic and D. N. A. code of an organism to another organism

Posted by Piyush Doneriya 5 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Meghna Thapar 5 years, 1 month ago

Traditionally, humans have manipulated genomes indirectly by controlling breeding and selecting offspring with desired traits. Genetic engineering involves the direct manipulation of one or more genes. Most often, a gene from another species is added to an organism's genome to give it the desired phenotype. There are three main methods of genetic engineering which are the plasmid method, the vector method, and the biolistic method. This method is the most commonly used method in genetic engineering. This method uses small circular pieces of a DNA molecule called plasmids.

ANSWER

How many gram of neutron is present in 10 gram sample of heavy water

Posted by M M 5 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Yogita Ingle 5 years, 1 month ago

Heavy water consists of deuterium instead of hydrogen . Deuterium atom consists one proton and one neutron. Hence, there are total 10 neutrons in a heavy water molecule (2 from deuterium and 8 from oxygen).
Number of heavy water molecules = 10/20 ${{N}{A}}$ = $0.5 {{N}{A}}$
Mass of neutrons present in 0.5 mol of heavy water = $10/{{N}{A}} x 5 {{N}{A}} = 5 g$

ANSWER

“The string force is directly proportional to the displacement of the string.”I can't understand this line. Can u make me to understand this sentence? Plz.....

Posted by Aparna Singh 5 years, 1 month ago

CBSE > Class 09 > Science

1 answers

M M 5 years, 1 month ago

Dont kniw the answer , shut up you idoit and keep quite

ANSWER

What is the role of tissues

Posted by Shivaan Shivaan 5 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Rishav Thakuria 5 years, 1 month ago

Tissue is a group of cells that are similar in structure and are arranged systemically together to perform a specific task.

ANSWER

The auidable range of hearing for rabbit The auidable range of hearing for ? is ______than humans.

Posted by Thumati Saipoojitha 5 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Shivaan Shivaan 5 years, 1 month ago

Higher

ANSWER

A body of mass 2 kg, initially moving with a velocity of 10 m/s, collides with another body of mass 5 kg at rest. After collision velocity of the first body becomes 1 m/s. Find the velocity of the second body. (PLEASE KINDLY GIVE THE ANSWER TODAY ONLY.)???????????????????????????????

Posted by Parnali Paul 5 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Gaurav Seth 5 years, 1 month ago

m₁ = 2kg, u₁ = 10m/s, v₁ = 1m/s

m₂ = 5kg, u₂ = 0m/s, v₂ = ?

we know that-

m₁u₁ + m₂u₂ = m₁v₁ + m₂v₂

(2*10) + (5*0) = (2*1) + (5v₂)

20 + 0 = 2 + 5v₂

18 = 5v₂

18 / 5 = v₂

3.6 = v₂

therefore, the velocity of the second body is 3.6 m/s

3Thank You

ANSWER

Ham log kitna percent mind use karte hai. Does anybody know

Posted by Ranjan Mishra 5 years, 1 month ago

CBSE > Class 09 > Science

2 answers

#Ķáŕáń J@@Ť? 5 years, 1 month ago

We use 7% of our brain Mark used his 13% of his brain Einstein used his 26% of his brain

Samit Prasad 5 years, 1 month ago

On an average a normal human uses only 10% of the brain's capacity.

ANSWER

Kya hoga jab koyi bhi 100% mind use kar laga. Is anybody know what is happen?

Posted by Ranjan Mishra 5 years, 1 month ago

CBSE > Class 09 > Science

2 answers

#Ķáŕáń J@@Ť? 5 years, 1 month ago

He/she can change the world

Siddhant Malik 5 years, 1 month ago

Dimag kaam karna band kar dega,??

ANSWER

Which of the following statement is not correct for an object moving along a straight path in an accelerated?

Posted by John Hatzaw 5 years, 1 month ago

CBSE > Class 09 > Science

0 answers

ANSWER

What is the difference in the arrangement of particles in solid, liquid and gas ?

Posted by Tahura Tahura 5 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Aarti Balu 5 years, 1 month ago

Solids have no intermolecular spaces, liquid has moderate intermolecular spaces and gases have large intermolecular spaces between them

ANSWER

The restoring force is directly proportional to the displacement of the string. Explain it cleary in easy words

Posted by Aparna Singh 5 years, 1 month ago

CBSE > Class 09 > Science

0 answers

ANSWER

What do you understand by the fluid mosaic model

Posted by Akhil Dalal 5 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Gaurav Seth 5 years, 1 month ago

The fluid mosaic model was proposed by S.J. Singer and Garth L. Nicolson. This model explains the structure of the plasma membrane of animal cells as a mosaic of components such as phospholipids, proteins, cholesterol, and carbohydrates. These components give a fluid character to the membranes.

ANSWER

What is a cell theory?

Posted by Rajesh Singh 5 years, 1 month ago

CBSE > Class 09 > Science

5 answers

Insha Fatima 5 years, 1 month ago

Modern version of cell theory say that ( 1) all living organism are composed of cell and their product. ( 2 ) the cell is the structural and functional unit of life . ( 3 ) all cells aries from pre existing cells. ( 4 ) the smallest unit of life is the cell, i.e ,every organism starts its life as a single cell.

Rated Vlogs 5 years, 1 month ago

The theory is the basic introduction of cell.In this it's is given that cell was first discovered by Robert hooke. He discovered the dead cell, through simple microscope.After that the living cell was discovered by Anton van leewhooke.The cell theory was given by sclerden and schween.The main points of cell theory are:- (I) cell is the basic or fundamental part of living body. (ii) The whole body is made up of cell. (iii)New cells form when pre-existing cell divides.

Akhil Dalal 5 years, 1 month ago

Basic thing all about new cell made up of old cell .

Gaurav Seth 5 years, 1 month ago

The Cell Theory is one of the basic principles of biology proposed by the scientists Theodor Schwann, Matthias Schleiden, and Rudolph Virchow.

It states that

i) All living organisms are composed of cells.

ii) The cell is the basic unit of life.

Cells arise from pre-existing cells.

Yogita Ingle 5 years, 1 month ago

Mathias Schleiden and Theodor Schwann in 1838 postulated Cell Theory.

The Cell Theory states that:

All living organisms are formed of one or more cells.
New cells arise from pre-existing cells by cell division.
Cell is the fundamental unit of structure and function in living organism.

ANSWER

Difference between positive acceleration and negative acceleration

Posted by Femi Binod 5 years, 1 month ago

CBSE > Class 09 > Science

2 answers

Rated Vlogs 5 years, 1 month ago

positive acceleration:-velocity/time example: (5m/s²) negative acceleration:- -velocity/time example: (-5m/s²)

Yogita Ingle 5 years, 1 month ago

When the motion of the body is opposite to the direction of acceleration we say the acceleration is negative and when the motion of the body is in same direction as that of acceleration we say the acceleration is positive.

ANSWER

What is unbalanced force?

Posted by Vani Tiwari 5 years, 1 month ago

CBSE > Class 09 > Science

2 answers

Rajat Singh 5 years, 1 month ago

A force in which resultant on both the sides is not zero is known as unbalanced force.

Gaurav Seth 5 years, 1 month ago

A force where two forces acting in opposing directions on a body, are not equal in magnitude and in size, is known as an unbalanced force. In an unbalanced force, a body changes its position i.e. we can observe a moving object changing its direction, either increasing the speed or decreasing the speed and a body at rest starts to move and vice versa.

ANSWER

What the chemical formulae of the following

Posted by Tani Sha 5 years, 1 month ago

CBSE > Class 09 > Science

0 answers

ANSWER

What is Retardation / deaceleration?

Posted by Vani Tiwari 5 years, 1 month ago

CBSE > Class 09 > Science

2 answers

Rated Vlogs 5 years, 1 month ago

Negative acceleration is known as Retardation. example: (5m/s²)

Yogita Ingle 5 years, 1 month ago

When the velocity decreases with respect to time it is termed as retardation or deceleration
In reality negative acceleration is commonly called retardation Its SI unit is m/s²

ANSWER

What is velocity? In 2 point.....

Posted by Vani Tiwari 5 years, 1 month ago

CBSE > Class 09 > Science

2 answers

Rated Vlogs 5 years, 1 month ago

(I)Velocity means displacement/time. (ii) SI unit is velocity is m/s (meter per second) (iii)It is a vector quantity.

Yogita Ingle 5 years, 1 month ago

Velocity: Velocity is the speed of an object moving in a definite direction.
The SI unit of velocity is also metre per second.
Velocity is a vector quantity; it has both magnitude and direction.

ANSWER

What is speed? In 3 point...

Posted by Vani Tiwari 5 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Yogita Ingle 5 years, 1 month ago

Speed: Distance travelled by the object in unit time.
The SI unit of speed is metre per second. This is represented by the symbol m s^–1 or m/s.
Speed is a scalar quantity; it only has direction.