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When the body change its position and we can say that any object is moving or in motion process following characteristics As given below catching of moving object fast first the moving object change its position with time

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Ketan Singh Solanki 4 years, 1 month ago

9 chapter

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Yogita Ingle 4 years, 1 month ago

When the body changes its position with respect to its surroundings or reference point.
So, we can say that when any object is moving or in motion it possess following characteristics as given below.

Characteristics of moving object

The moving object changes its position with time

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ANSWER

Cell ki discovery kisne ki?

Posted by Rahul Mahan 4 years, 1 month ago

CBSE > Class 09 > Science

5 answers

Anisha 9Th B Anisha Bager 4 years, 1 month ago

Robert hook discovered cell

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Awesome Npkh 4 years, 1 month ago

Robert Hook

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Suhani H Chavda 4 years, 1 month ago

Robert Hooke had discovered cell.

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Suhani H Chavda 4 years, 1 month ago

Robert Hooke

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Rahul Mahan 4 years, 1 month ago

Robart hook ne cell ki discovery ki.

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How to identify that element is metal or non-metal??

Posted by Vivek Roy 4 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Kartik Yadav 4 years, 1 month ago

The elements can be classified as metals, nonmetals, or metalloids. Metals are good conductors of heat and electricity, and are malleable (they can be hammered into sheets) and ductile (they can be drawn into wire). Most of the metals are solids at room temperature, with a characteristic silvery shine (except for mercury, which is a liquid). Nonmetals are (usually) poor conductors of heat and electricity, and are not malleable or ductile; many of the elemental nonmetals are gases at room temperature, while others are liquids and others are solids. The metalloids are intermediate in their properties. In their physical properties, they are more like the nonmetals, but under certain circumstances, several of them can be made to conduct electricity. These semiconductorsare extremely important in computers and other electronic devices. On many periodic tables, a jagged black line (see figure below) along the right side of the table separates the metals from the nonmetals. The metals are to the left of the line (except for hydrogen, which is a nonmetal), the nonmetals are to the right of the line, and the elements immediately adjacent to the line are the metalloids.

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???? ?? ?????? ????? ???? ?? ???????

Posted by Manya Puri 4 years, 1 month ago

CBSE > Class 09 > Science

2 answers

Keshav Kumar 4 years, 1 month ago

Collagen organi

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Ash Greninja 4 years, 1 month ago

mineralized organic matrix.

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ANSWER

The force raises the speed from 2.5 m/s to 5m/s in 5 second. Later the same force applied for 2 second.what will be final speed of an object in last 2 seconds? Pls do this question and write solution

Posted by Pradeep Mehta 4 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Kartik Yadav 4 years, 1 month ago

ANSWER Given, mass=5kg t1=2s Initial velocity u=3m/s Final velocity v=7m/s t2=5s So, Let the Force be F Let the acceleration be a So, a=t(v−u)=2(7−3)=2m/s2 So the magnitude of the applied force is 10N And the final velocity after 5s is v So, v=u+at v=3+2×5 v=13m/s The final velocity after 5s is 13m/s

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ANSWER

what is meristematic tissues

Posted by Arya Anand 4 years, 1 month ago

CBSE > Class 09 > Science

2 answers

Divya Gupta 4 years, 1 month ago

The growth of plants occurs only in certain specific region.This is because the dividing tissue,also known as meristematic tissue,is located only at this points.Depending on the region where they present,meristematic tissue are classified as apical,lateral and intercalary

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Ash Greninja 4 years, 1 month ago

The meristem is a type of tissue found in plants. It consists of undifferentiated cells capable of cell division. Cells in the meristem can develop into all the other tissues and organs that occur in plants.

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Difference between permanent Tissue and complex Tissue

Posted by Rengavadivelammal .C 4 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Ayush Saluja 4 years, 1 month ago

Simple permanent tissue is made up of one type of group of cells whereas complex tissue is made up of different type of group of cells joining together and making a one tissue

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ANSWER

Explain the neuron tissue with diagram

Posted by Rengavadivelammal .C 4 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Aarushi Erande 4 years, 1 month ago

The neuron tissue has 3 parts i.e. dendrites, axon and nerve endings. The dendrites receive messages, the axon takes the message away and nerve endings pass on the messages to other nerves. Diagram is there on google.

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Write the mathamatical formula of second law of motion

Posted by Pradeep Mehta 4 years, 1 month ago

CBSE > Class 09 > Science

2 answers

Keshav Kumar 4 years, 1 month ago

FORCE=M×A

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Dakshal Chauhan 4 years, 1 month ago

F=ma

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Why the luggage is tied on roof of bus?

Posted by Pradeep Mehta 4 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Keshav Kumar 4 years, 1 month ago

If luggage is kept untied on the roof of a bus starts and accelerates the bus, the luggage will try to maintain its rest position due to intertia of rest...

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Gagsy

Posted by Chetan Katara 4 years, 1 month ago

CBSE > Class 09 > Science

2 answers

Krish Achra? 4 years, 1 month ago

Ggegy

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Chetan Katara 4 years, 1 month ago

Egegey

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ANSWER

Give the Newton's mathematical law of expression

Posted by Bhawana Singh 4 years, 1 month ago

CBSE > Class 09 > Science

2 answers

Gaurav Seth 4 years, 1 month ago

Newton's third law of motion states that every action has equal and opposite reaction.

If F_ABis a force of body A acting on B and F_BA is force by B on body A.

The mathematical expression is given by,

F_AB = - F_BA

where, F_AB is an action on B while F_BA is reaction of body B on A. Negative sign indicates that force acting on body A is in opposite direction to the force which is acting on body B.

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Diwakar Roy 4 years, 1 month ago

F = ma

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Which part of the cell is permeable

Posted by Sakshi Vashisht 4 years, 1 month ago

CBSE > Class 09 > Science

3 answers

Suraj Burnwal 4 years, 1 month ago

Plasma membrane

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Rachit Kumar 4 years, 1 month ago

Cell wall

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Harsh Baitha 4 years, 1 month ago

Plasma membrane

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Explain the meristamatic with its functions

Posted by Rengavadivelammal .C 4 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Gaurav Seth 4 years, 1 month ago

Functions: It helps in growth in length and formation of primary tissues.
(ii) Intercalary: It is found above or below stem nodes and leaf bases.
Functions: It helps in growth of internodes, growth in leaves and correction of position in lodged stems.
(iii) Lateral:

(a) Phellogen (Cork cambium): It develops from hypodermis in stems and pericycle in roots. Function: Formation of protective cork (phellem) and aerating lenticles on the outside and secondary cortex (phelloderm) on the inner side.

(b) Vascular Cambium: In stem form intra-fascicular cambial strips and interfascicular strips. In root from conjuctive parenchyma and pericycle. Function: Formation of secondary phloem on outside and secondary xylem on inner side. Vascular rays are formed at intervals for radial conduction.

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What is tetra atomic?

Posted by Jayant Jaiswal 4 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Yogita Ingle 4 years, 1 month ago

The molecules of many elements are composed of four atoms of that element. They are termed as tetra atomic For instance, P₄, SO₃. So their atomicity is 4.

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Graph of s=ut+(1/2)at^

Posted by Likhith Manohar Vadapalli 4 years, 1 month ago

CBSE > Class 09 > Science

0 answers

ANSWER

Mention the solute and the solvent in tincture of iodine

Posted by Diksha Gaba 4 years, 1 month ago

CBSE > Class 09 > Science

3 answers

Muskan Gupta 4 years, 1 month ago

Iodine is solute and alcohol is solvent

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Yogita Ingle 4 years, 1 month ago

In the tincture of iodine, the solvent is alcohol and water while the solute is iodine. Tincture of iodine is also known as a weak iodine solution or iodine tincture. Iodine tincture is an antiseptic used to disinfect the wounds. The structure of the iodine tincture is 2 to 7 % of the iodine and the remaining is either Sodium or potassium iodide.

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Pradeep Mehta 4 years, 1 month ago

Solute is Iodine whereas solvent is alcohol

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Explain the different types of connective tissue?

Posted by Rengavadivelammal .C 4 years, 1 month ago

CBSE > Class 09 > Science

2 answers

Rengavadivelammal .C 4 years, 1 month ago

Tagsgs

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Rengavadivelammal .C 4 years, 1 month ago

THE CONNECTIVE TISSUE CONSISTS OF DIFFERENT TYPES OF CELLS, ALL OF THEM PERFORM SAME FUNCTIONS

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An object which has the three types of motion i.e. straight,circular & periodic motion?

Posted by Pari Kansal 4 years, 1 month ago

CBSE > Class 09 > Science

0 answers

ANSWER

Define the terms and give one example of bileteral symmtery, coelom,triploblastic

Posted by Kanak Kokash 4 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Palak Lakhotiya 4 years, 1 month ago

Platyhelminths

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Osmosis is a special kind of diffusion. Explain this

Posted by Aditya Shukla 4 years, 1 month ago

CBSE > Class 09 > Science

2 answers

Yogita Ingle 4 years, 1 month ago

Diffusion is the process in which molecules of a substance move from the place of their higher concentration to the place of their lower concentration (no membrane is required). But during osmosis, the solvent (water) molecules move from the place of their higher concentration to the place of their lower concentration through a semi-permeable membrane. Thus, osmosis is termed as a special kind of diffusion.

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Mahi Kumar 4 years, 1 month ago

Yea

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Ans. Of ch. 6 tissue (science) no. 3

Posted by Tamanna Patel 4 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Tamanna Patel 4 years, 1 month ago

Please give ans. Of my questions

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What are the factors of diffusion ?

Posted by Nayan Mahawar 4 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Vidhi Srivastav 4 years, 1 month ago

several factors affect the rate of diffusion: Extent of the concentration gradient: The greater the difference in concentration, the more rapid the diffusion. The closer the distribution of the material gets to equilibrium, the slower the rate of diffusion becomes. Mass of the molecules diffusing: Heavier molecules move more slowly; therefore, they diffuse more slowly. The reverse is true for lighter molecules. Temperature: Higher temperatures increase the energy and therefore the movement of the molecules, increasing the rate of diffusion. Lower temperatures decrease the energy of the molecules, thus decreasing the rate of diffusion. Solvent density: As the density of a solvent increases, the rate of diffusion decreases. The molecules slow down because they have a more difficult time getting through the denser medium. If the medium is less dense, diffusion increases. Because cells primarily use diffusion to move materials within the cytoplasm, any increase in the cytoplasm’s density will inhibit the movement of the materials. An example of this is a person experiencing dehydration. As the body’s cells lose water, the rate of diffusion decreases in the cytoplasm, and the cells’ functions deteriorate. Neurons tend to be very sensitive to this effect. Dehydration frequently leads to unconsciousness and possibly coma because of the decrease in diffusion rate within the cells. Solubility: As discussed earlier, nonpolar or lipid-soluble materials pass through plasma membranes more easily than polar materials, allowing a faster rate of diffusion. Surface area and thickness of the plasma membrane: Increased surface area increases the rate of diffusion, whereas a thicker membrane reduces it. Distance travelled: The greater the distance that a substance must travel, the slower the rate of diffusion. This places an upper limitation on cell size. A large, spherical cell will die because nutrients or waste cannot reach or leave the center of the cell. Therefore, cells must either be small in size, as in the case of many prokaryotes, or be flattened, as with many single-celled eukaryotes. A variation of diffusion is the process of filtration. In filtration, material moves according to its concentration gradient through a membrane; sometimes the rate of diffusion is enhanced by pressure, causing the substances to filter more rapidly. This occurs in the kidney where blood pressure forces large amounts of water and accompanying dissolved substances, or solutes, out of the blood and into the renal tubules. The rate of diffusion in this instance is almost totally dependent on pressure. One of the effects of high blood pressure is the appearance of protein in the urine, which is “squeezed through” by the abnormally high pressure.

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State two ways in which phleom is functionally different from xylem

Posted by Gourav Kashyap 4 years, 1 month ago

CBSE > Class 09 > Science

1 answers

Vidhi Srivastav 4 years, 1 month ago

Phloem helps in transportation of food and nutrients from leaves to storage organs whereas xylem transports water and minerals from roots to aerial parts of plant. -Phloem provided no mechanical function whereas xylem provides mechanical support. - Phloem has bidirectional movements whereas xylem has single direction movements

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Describe the states of matter

Posted by Payal Priyadarsini 4 years, 1 month ago

CBSE > Class 09 > Science

5 answers

Chaitanya Varma 4 years, 1 month ago

Solid ,liquid and gaseus

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Nayan Mahawar 4 years, 1 month ago

The matter has been classified in three different states : -solid -liquid -gas And there are two more states Plasma Bose Einstein condensate

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Divyanshu Mishra 4 years, 1 month ago

There are three states of matter Solid Liquid Gas

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Shreya Singh 4 years, 1 month ago

Three states of matter Solid, Liquid and gas

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Aditya Sahu 4 years, 1 month ago

Three types of matters solid, liquid and gas

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Which causes more burn steam or boiling water

Posted by Minku Rani 4 years, 1 month ago

CBSE > Class 09 > Science

4 answers

Divya Gupta 4 years, 1 month ago

Steam

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Palak Lakhotiya 4 years, 1 month ago

Steam

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Payal Priyadarsini 4 years, 1 month ago

Stem

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Minku Rani 4 years, 1 month ago

Steam

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What is function of stomach

Posted by Kunal Singh 4 years, 1 month ago

CBSE > Class 09 > Science

2 answers

Yogita Ingle 4 years, 1 month ago

It serves as a muscular bag which is situated towards the left side of the abdominal cavity, beneath the diaphragm. This vital organ acts as a storage for the food and provides enough time to digest meals. The stomach also produces digestive enzymes and hydrochloric acid that maintains the process of digestion.

Mucous: It is an aqueous secretion produced by the mucous membranes. It functions by protecting the stomach lining and gastric pits from the acid, which is produced by the glands to destroy the bacteria that entered along with the food particles.
Digestive enzymes: They are the group of enzymes which functions by breaking down polymeric macromolecules like biopolymers into their smaller and simpler substances.
Hydrochloric acid: It is the digestive fluid formed by the stomach during the process of digestion. It functions by destroying harmful microorganisms present in the food particles.

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Aditya Sahu 4 years, 1 month ago

The core functions of the human stomach is as an aid to digestion

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What is antibiotics ?

Posted by Aman Mishra 4 years, 1 month ago

CBSE > Class 09 > Science

3 answers

Keshav Kumar 4 years, 1 month ago

The medicine which kill or stop growth of harmful microorganisms in our body is known as Antibiotics....

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Shreya Singh 4 years, 1 month ago

The medicines which kill or stop the growth of microorganisms in our body are Known as Antibiotics.

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S . Maha Gowri 4 years, 1 month ago

The medicines which kill or stop the growth of microorganisms in our body are known as ANTIBIOTICS . These are very useful to us as they prevent us from the effects of microorganisms . Antibiotics are made up of fungi and bacteria .

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Names of 10 matter ?

Posted by Aman Mishra 4 years, 1 month ago

CBSE > Class 09 > Science