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Define Connective Tissue and its type also.

Posted by Nitin Tripathi 4 years ago

1 answers

Connective tissues, as the name implies, support and connect different tissues and organs of the body. They are widely distributed in every part of the body. They originate from the mesoderm (the middle germinal layer of the embryo).

Connective tissues are divided into three groups:

Loose Connective Tissue
Dense Connective Tissue
Specialised Connective Tissue

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Mein kya karu

Posted by Abhinav Sain 4 years ago

CBSE > Class 09 > Science

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Jatin Bhardwaj 4 years ago

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A ball hits a wall at 6 metre per second. It rebounds horizontally at 4.4 metre per second . The ball is in contact with the wall for 0.040 seconds. What is the acceleration of the ball ?

Posted by Shrutee Kumari 4 years ago

CBSE > Class 09 > Science

1 answers

Ananya K 4 years ago

Acceleration (a)=t(v−u) =0.0406−(−4.4)=0.04010.4=260m/s2

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A ball hits a wall at 6 metre per second. It rebounds horizontally at 4.4 metre per second . The ball is in contact with the wall for 0.040 seconds. What is the acceleration off the ball ?

Posted by Shrutee Kumari 4 years ago

CBSE > Class 09 > Science

1 answers

Ananya K 4 years ago

Acceleration (a)= t (v−u) = 0.040 6−(−4.4) = 0.040 10.4 =260m/s 2

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Find relative density o2 to h2o

Posted by Aditya Raj 4 years ago

CBSE > Class 09 > Science

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What is gravitational force and it's example

Posted by Vansh Raj Saxena 4 years ago

CBSE > Class 09 > Science

1 answers

Ananya K 4 years ago

Some examples of the force of gravity include: The force that holds the gases in the sun. The force that causes a ball you throw in the air to come down again. The force that causes a car to coast downhill even when you aren't stepping on the gas. The force that causes a glass you drop to fall to the floor.

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ssertion: Carbon dioxide is a compound. Reason: Carbon dioxide is a pure chemical substance

Posted by Prrajan S 4 years ago

CBSE > Class 09 > Science

1 answers

Ananya K 4 years ago

A chemical element is a pure chemical substance consisting of a single type of atom distinguished by its atomic number, which is the number of protons in its atomic nucleus. A compound is a chemical species that is formed when two or more atoms join together chemically, with covalent or ionic bonds. Examples: NaCl,KCl and NaOH So, Carbon Monoxide is considered a compound but carbon and oxygen as elements

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State which of the following situation are possible and give an example for each of these. (a) An object with a constant acceleration but zero velocity.

Posted by Taniya Sarkar 4 years ago

CBSE > Class 09 > Science

1 answers

Ananya K 4 years ago

ANSWER (a) Let say a stone is thrown in vertical direction with initial speed u. As the time passes its velocity decreases and at the maximum height it attained, its velocity is zero but it has an acceleration (9.8)m/s 2 in the downward direction due to gravity. (b) When a pebble is tied with an end of string and it is whirled in horizontal circular motion with the other end of the string at the centre of circular path, then it has a constant magnitude of centripetal acceleration towards the centre. Hence the acceleration is in perpendicular direction to the motion of pebble.

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Why do doctors advice to put strips of wet cloth on the forehead of a person having high temperature?

Posted by Nitin Tripathi 4 years ago

CBSE > Class 09 > Science

1 answers

Meghna Thapar 4 years ago

When strips of wet cloth are put on the forehead of person having fever, the water in the cloth absorbs heat from hot forehead to get vaporise. It helps to decrease the extra heat in the body caused due to high fever consequently helps to reduce body fever. When a person has fever, his body temperature becomes more than the normal body temperature. If we put strips of wet cloth on the forehead of a person suffering from high fever, the water evaporates taking heat from the body. Thus, moist strips will lower his body temperature.

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If the radius of the earth shrinks to half then the weight will be_______ times and why

Posted by Sameer Khan 4 years ago

CBSE > Class 09 > Science

1 answers

Ananya K 4 years ago

We know that g α r 2 1 [∵ mass is unchanged ] Now, if the radius is halved then g will become 4 times This means that the weight of the body will also become 4 times as weight is the product of mass and acceleration due to gravity.

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How prokaryotic cells generate energy? if there isn't any type of membrane bound cell organelles are present in it like mitochondria.

Posted by Tanay Raj 4 years ago

CBSE > Class 09 > Science

1 answers

Pratyush Pradyun Subrata 4 years ago

Prokaryotes get energy by performing chemical reactions within the cell. ... These electron carriers take the high-energy electrons to a series of membrane proteins to produce more ATP, very similar to what you see in the electron transport chain of cellular respiration in mitochondria.The Ways in Which Prokaryotes Obtain Energy Phototrophs (or phototrophic organisms) obtain their energy from sunlight. Chemotrophs (or chemosynthetic organisms) obtain their energy from chemical compounds. Chemotrophs that can use organic compounds as energy sources are called chemoorganotrophs.Each organelle supports different activities in the cell. Mitochondria, for example, are organelles that provide eukaryotes with most of their energy by producing energy-rich molecules called ATP. Prokaryotes lack mitochondria and instead produce their ATP on their cell surface membrane.

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Fjjri

Posted by Mukesh Walia 4 years ago

CBSE > Class 09 > Science

4 answers

Kanishka Chauhan 4 years ago

Jekek3kennebabqu2ijekrndnbens

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Atul Kumar Dwivedi 4 years ago

Gzgvksgxng kg sgdjdhdnxfbrjstlslthahdusjchdhcgx

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Suhani Singh 4 years ago

Jjrhfhdjdbd

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Mukesh Walia 4 years ago

Ttyut

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If one mole of carbon atoms weighs 12 grams,what is the mass (in grams) of 1 atom of carbon?

Posted by 《Aruba》°°° 《Sayed》❤ 4 years ago

CBSE > Class 09 > Science

2 answers

Abhinandan Dubey 4 years ago

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Yogita Ingle 4 years ago

Mass of one mole of carbon atom =12 g

A mole of carbon contains 6.022×10²³ atoms.

Hence, mass of 6.022×10²³ atoms of carbon =12 g

Mass of 1 atom of carbon =12/ 6.022×10²³ =1.993×10⁻²³g

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Identify hogeneous mixture from the following ( a) dust strong (b) soap bubbles are formed by blowing air into soap solution ( c) a suspension of chalk of water (d) a dilute solution of alcohol in water

Posted by Bharath Bharath 4 years ago

CBSE > Class 09 > Science

1 answers

Nikhil Nilay 4 years ago

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Why is necessary to use symbol for the elements

Posted by Archana Nirban 4 years ago

CBSE > Class 09 > Science

1 answers

Unknown ..? 4 years ago

To differentiate between different elements.

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A bicycle moves with a constant velocity of 5km/h for 10m and then deceleration at the rate 1km/h² ,till it stops. Find the total distance covered by the bicycle?

Posted by Sweta Soreng 4 years ago

CBSE > Class 09 > Science

1 answers

Yogita Ingle 4 years ago

Initial velocity u = 5 km/hr

Time t = 10 min

Deceleration

And so, from the speed formula, we have

Distance

From equation of motion, we have,

Therefore, total distance = d1 + d2

Total distance

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A particle start from a point with a velocity of +6.0 m/s and move with an acceleration of -20m/s² . Show that after 6s the particle will be at the starting point?

Posted by Sweta Soreng 4 years ago

CBSE > Class 09 > Science

1 answers

Yogita Ingle 4 years ago

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A ship moving with a constant acceleration of 36km/h² in a fixed direction speed up from 12km/h to 18km/h . Find the distance traversed by the ship in this period?

Posted by Sweta Soreng 4 years ago

CBSE > Class 09 > Science

1 answers

Yogita Ingle 4 years ago

Given,

Acceleration, a=36km/h²

Initial velocity, u=12km/h

Final velocity, v=18km/h

Using the equation of motion as:

v²−u²=2as

Where, s is distance traversed by ship.

(18)²−(12)²=2(36)s

324−144=36s

s=5km

Distance traversed by ship is 5 Km.

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A train start from a station and move with a constant acceleration for 2m . If it cover a distance of 400m in this period, find the acceleration?

Posted by Sweta Soreng 4 years ago

CBSE > Class 09 > Science

1 answers

Yogita Ingle 4 years ago

initial velocity (u)= 0m/s
final velocity (v)=400
time(t)= 2 minutes
then,
Acceleration ( a)= v-u/t
= 400/2
= 200m/meter square

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A bullet hits a wall with a velocity of 20m/s and penetrate it up to a distance of 5cm . Find the deceleration of the bullet in the wall?

Posted by Sweta Soreng 4 years ago

CBSE > Class 09 > Science

1 answers

Yogita Ingle 4 years ago

u= 20 m/s
v= 0
s = 5 cm = 0.05 m

from 3rd equation,
v² -u² = 2as
⇒0 - (20)² = 2×0.05×a
⇒0.1 a = - 400
⇒a = - 4000 m/s²

deceleration will be - 4000 m/s²

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An object dropped from a cliff falls with at constant acceleration of 10m/s². Find its speed 2s after it was dropped?

Posted by Sweta Soreng 4 years ago

CBSE > Class 09 > Science

1 answers

Yogita Ingle 4 years ago

a = u -v /t

v = u + at

v= 0+ 10*5

= 50 m/s

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Why do particle of a colloidal solution not settle down when left undisturbed

Posted by Mansi Sahu 4 years ago

CBSE > Class 09 > Science

1 answers

Yogita Ingle 4 years ago

Colloidal particles are smaller in size. They remain in state of zig-zag motion

(Brownian motion) always, so the force of gravity is encountered and they do not settle down.

But the particles in suspension are larger in size, so they settle down under the influence of gravity.

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Why is tyndall effect not seen in a true solution

Posted by Mansi Sahu 4 years ago

CBSE > Class 09 > Science

2 answers

Unknown ..? 4 years ago

Particles are not large enough.

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Yogita Ingle 4 years ago

Tyndall effect is in fact the definite test to show the difference between a true and a colloidal solution. it works on the principle that light beams scatter due to the presence of large colloidal particles in the solution which separate the light however in a true solution the particles are not as large enough to scatter the light particles, thats why Tyndall effect is not seen in true solution.

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Difference between colenchyma and platyehelminthes

Posted by Preetham V Nayak 4 years ago

CBSE > Class 09 > Science

3 answers

King Siddharth 4 years ago

Parenchyma: These are the cells found in soft part of plants such as leaves,fruits These cells are not the specialised cells These cell consists of thin cell wall The cell wall is made up of cellulose These consists of living cell at maturity Collenchyma: These cells These cells are found in petiole, leaves and young stems These cells are specialised cell These cell consists of unequally thin cell wall The cell wall is made up of pectin and cellulose These consists of living cell at maturity

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Yogita Ingle 4 years ago

Parenchyma:

These are the cells found in soft part of plants such as leaves,fruits
These cells are not the specialised cells
These cell consists of thin cell wall
The cell wall is made up of cellulose
These consists of living cell at maturity

Collenchyma:

These cells
These cells are found in petiole, leaves and young stems
These cells are specialised cell
These cell consists of unequally thin cell wall
The cell wall is made up of pectin and cellulose
These consists of living cell at maturity

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King Siddharth 4 years ago

Parenchyma It stores food very large intercellular space is present. Living. Sometimes store food. In aquatic plants,gives buoyancy. Provides mechanical support Collenchyma Living Thickened at the corners Little intercellular spaces Provides flexibility and mechanical support

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A bus starting from rest moves with a uniform acceleration of 0.1 meter per second for 2 minutes Find( a) the speed acquired, ( b) the distance travelled

Posted by Jeevitha R 4 years ago

CBSE > Class 09 > Science

1 answers

King Siddharth 4 years ago

Distance=720m

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How can water gets transported to the plant when most of the cells in xylem are dead at maturity

Posted by Tejo Mourya Sura 4 years ago

CBSE > Class 09 > Science

1 answers

Tanu Prajapati 4 years ago

Xylem is the vascular tissue responsible for the transport of water and nutrients from the roots in the soil to the above-ground parts of the plant. ... The TE are completely dead at maturity, and act like pipes to allow water and dissolved minterals to flow through them.

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If a bus takes a sharp turn then passengers inside move outward due to

Posted by Hruthik Kankala 4 years ago

CBSE > Class 09 > Science

2 answers

Unknown ..? 4 years ago

Inertia of direction

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Tejo Mourya Sura 4 years ago

Inertia of direction

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What are germ layers??

Posted by Palak Pandey 4 years ago

CBSE > Class 09 > Science

1 answers

Meghna Thapar 3 years, 11 months ago

A germ layer is a group of cells in an embryo that interact with each other as the embryo develops and contribute to the formation of all organs and tissues. All animals, except perhaps sponges, form two or three germ layers. The germ layers develop early in embryonic life, through the process of gastrulation. The three germ layers are the endoderm, the ectoderm, and the mesoderm. Cells in each germ layer differentiate into tissues and embryonic organs. The ectoderm gives rise to the nervous system and the epidermis, among other tissues. The mesoderm gives rise to the muscle cells and connective tissue in the body.

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Second law of motion what is

Posted by Mayank Chauhan 4 years ago

CBSE > Class 09 > Science

5 answers

🖤 🖤 4 years ago

Newton's second law of motion states that rate of change of momentum is directly proportional to the applied unbalanced force. It's in the direction of the force F=ma

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Aditya Prajapati 4 years ago

All newton law

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Sasmita Acharya 4 years ago

The rate of change of momentum is directly proportional to the applied unbalanced force in the direction of force

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Pratyush Pradyun Subrata 4 years ago

Newton's second law of motion pertains to the behavior of objects for which all existing forces are not balanced. The second law states that the acceleration of an object is dependent upon two variables - the net force acting upon the object and the mass of the object.The second law states that the greater the mass of an object, the more force it will take to accelerate the object. There is even an equation that says Force = mass x acceleration or F=ma. This also means that the harder you kick a ball the farther it will go.It states that the rate of change of momentum of a body is directly proportional to the applied force and takes place in the direction in which the force acts.it is same as momentum.

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Yogita Ingle 4 years ago

Newton's Second Law of motion states that the rate of change of momentum of an object is proportional to the applied unbalanced force in the direction of the force.
ie., F=ma

Where F is the force applied, m is the mass of the body, and a, the acceleration produced.

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In which catergory can we put water as the light passes through it

Posted by Parvathy Roshan 4 years ago

CBSE > Class 09 > Science

2 answers

Ananya K 4 years ago

Some materials allow much of the light that falls on them to be transmitted through the material without being reflected. Materials that allow the transmission of light waves through them are called optically transparent. Chemically pure (undoped) window glass and clean river or spring water are prime examples of this.

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Rupesh Nehra 4 years ago

Hetrogenous mixture

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