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Which is a measure of inertia of a body

Posted by Sowparnika Ram 4 years ago

CBSE > Class 09 > Science

2 answers

Bhumika Rani Pradhan 4 years ago

Mass is the measure of inertia of a body.

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Yogita Ingle 4 years ago

Inertia is the natural tendency of an object to resist a change in its state of motion or of rest.
The mass of an object is a measure of its inertia.
A force that is just enough to cause a small cart to pick up a large velocity will produce a negligible change in the motion of a train, because of train’s large inertia.

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What is the use of glandular columner epithiliam ?? I can't understand this topic plz explain in easy words

Posted by Palak Pandey 4 years ago

CBSE > Class 09 > Science

1 answers

Yogita Ingle 4 years ago

Glandular Epithelium – These are modified columnar epithelial tissues. They are large cells that present in the tear glands, sweat glands etc. Their main function is secretion.

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Which animal never drinks water in it's entire life??

Posted by Palak Pandey 4 years ago

CBSE > Class 09 > Science

5 answers

Harshika Yadav 4 years ago

Kangaru rat ???

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Mishika Pandey 4 years ago

kangaroo rat That's because the kangaroo rat can go literally its entire life without once drinking water. We're referring to the kangaroo rat, a rodent that's native to the American Southwest and can, astonishingly, go its entire life without ever drinking a single drop of water.

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Manoj Tomar 4 years ago

Kangaru???

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Priyanka Naiyar 4 years ago

Koala.... It satisfy its water need through eucalyptus leaves.

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Vasu Bhai 4 years ago

Black macaque

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What is the physical phase of life????

Posted by Palak Pandey 4 years ago

CBSE > Class 09 > Science

1 answers

Meghna Thapar 4 years ago

Protoplasm is the physical phase of life.
All protoplasm composed of carbon, hydrogen, oxygen and nitrogen form the basis for all. They are also constituents of carbon dioxide, water and nitrogen compounds essential for life.
Huxley emphasised on the above theory and has supported the fact that protoplasm is the physical phase of life and forms the basis for our life.
These new compounds, like the elementary bodies, are lifeless. But when brought together under certain circumstances, they give rise to the still complex body.
Hence, protoplasm is referred to as the physical phase of life.

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What is latent heat of vaporization

Posted by V Kumar Tripathi 4 years ago

CBSE > Class 09 > Science

2 answers

Shree Kushwaha 4 years ago

The term latent heat of vaporisation can be defined as the amount of heat needed for the conversion of 1kg of liquid at its boiling point to gas at same temperature

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Yogita Ingle 4 years ago

The term latent heat of vaporisation can be defined as the amount of heat needed for the conversion of 1kg of liquid at its boiling point to gas at same temperature. It differs among different liquids.

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Is 7.4 of traingles class 9 not in the syllabus as Inequalities in a Traingle is removed from the syllabus

Posted by Shruti Padhan 4 years ago

CBSE > Class 09 > Science

2 answers

Harman Kaur 4 years ago

Yeah it is removed from the syllabus but we should do it I have also done it and it's very easy it will help us in future ok

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Nanthithaa Varshini 4 years ago

Yes

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a girl of mass 50 kg jumps out of a rowing boat of mass 300 kg with velocity of 2m/s.at which velocity the boat moves backwards

Posted by Pradeep Mehta 4 years ago

CBSE > Class 09 > Science

1 answers

Sarita Panda 4 years ago

With 1 m/s (approx)...

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What is main factor of solid liquids and gas

Posted by Lovely Yadav 4 years ago

CBSE > Class 09 > Science

1 answers

Meghna Thapar 4 years ago

Two factors determine whether a substance is a solid, a liquid, or a gas: The kinetic energies of the particles (atoms, molecules, or ions) that make up a substance. Kinetic energy tends to keep the particles moving apart. The attractive intermolecular forces between particles that tend to draw the particles together. A solid has definite volume and shape, a liquid has a definite volume but no definite shape, and a gas has neither a definite volume nor shape. The change from solid to liquid usually does not significantly change the volume of a substance.

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What is different between mirror and image

Posted by Lovely Yadav 4 years ago

CBSE > Class 09 > Science

1 answers

Meghna Thapar 4 years ago

A mirror is typically made of glass with a shiny metal backing that reflects all the light that strikes it. When a mirror reflects light, it forms an image. An image is a copy of an object that is formed by reflection or refraction. Mirrors may have flat or curved surfaces. In two dimensions. In geometry, the mirror image of an object or two-dimensional figure is the virtual image formed by reflection in a plane mirror; it is of the same size as the original object, yet different, unless the object or figure has reflection symmetry

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What are the advantages of classifying organisms.

Posted by Riya Mangang 4 years ago

CBSE > Class 09 > Science

4 answers

Sanskar Shukla 4 years ago

Any other doubt you have then tell me

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Riya Mangang 4 years ago

Thanks

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Sanskar Shukla 4 years ago

And this is one of the advantage

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Sanskar Shukla 4 years ago

There are millions of organisms on earth so the study of each individual is almost impossible that why the classification of organisms are important

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ANSWER

Write two characteristic features of kingdom fungi that distinguish it from other kingdoms

Posted by Tamas Kori 4 years ago

CBSE > Class 09 > Science

1 answers

Meghna Thapar 4 years ago

These organisms are classified as a kingdom, which is separate from the other eukaryotic life kingdoms of plants and animals. A characteristic that places fungi in a different kingdom from plants, bacteria, and some protists is chitin in their cell walls. The cell wall of most of the members of kingdom fungi is made up of chitin. They are heterotrophic (parasitic and saprophytic). They have a eukaryotic cell and are mostly multicellular (exc: Yeast). They reproduce through various different types of spores produced in fruiting bodies.

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Describe in a brief about momentum

Posted by Nanthithaa Varshini 4 years ago

CBSE > Class 09 > Science

2 answers

Deepika R 4 years ago

Momentum is the product of mass and velocity. Si unit of momentum is kg m/s. p=m X v. Momentum is directly proportional to mass and velocity.

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Sanskar Shukla 4 years ago

Momentum means the product of mass and velocity of an object

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ANSWER

In chapter: Motion how to find that for which question what equations of motion to use?????

Posted by Nanthithaa Varshini 4 years ago

CBSE > Class 09 > Science

3 answers

Mishika Pandey 4 years ago

When you start solving first write given and then write eq in side and compare given with eqs

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Samruddhi Ghodke 4 years ago

Logically as per me...!

4Thank You

Aditi.T Rajesh 4 years ago

Make a note of the quantities and then see which equation is related to those quantities. We can get to know by this method

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What is the meaning of velocity

Posted by Satya Jiban 4 years ago

CBSE > Class 09 > Science

3 answers

Harman Kaur 4 years ago

Velocity is the displacement upon time and it is and vector quantity because placement is a vector it has its own magnitude and depends on direction so this much

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Dev Thakkar 4 years ago

★Velocity is the vector quantity which depends upon the direction of motion. ★It can be zero, positive or negetive. ★We can find the velocity by displacement divided by taken time.

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Nanthithaa Varshini 4 years ago

Smallest : Sperm Biggest : Ovum

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Name the smallest and the biggest cell in human body

Posted by Deepansh Awasthi 4 years ago

CBSE > Class 09 > Science

5 answers

Manoj Tomar 4 years ago

The smallest cell in the human body RBC and the largest cell in human body ovum?????

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Sanskar Shukla 4 years ago

First one is correct

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Vandana Rustagi 4 years ago

Smallest is RBC and largest is nerve cell

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Divya Gupta 4 years ago

Smallest is sperm and biggest is ovum

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Satya Jiban 4 years ago

Sir i don't know

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ANSWER

Chapter 14 natural resources will be assessed or not

Posted by Tripti Shrimali 4 years ago

CBSE > Class 09 > Science

1 answers

Lovely Yadav 4 years ago

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What are the limitations of J.J Thomson's model of the atom?

Posted by Arnav Sharma 4 years ago

CBSE > Class 09 > Science

2 answers

Dev Thakkar 4 years ago

Thomson's atomic model failed to explain how the positive charge holds on the electrons inside the atom. It also failed to explain an atom's stability. The theory did not mention anything about the nucleus of an atom. It was unable to explain the scattering experiment of Rutherford.

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Satya Jiban 4 years ago

electron,proton

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What Is the force of attraction between earth and a man of mass 50kg M1=50 kg M2=6.6×10^24 R= 6.4×10^6

Posted by M. Harsha Vardhan 4 years ago

CBSE > Class 09 > Science

2 answers

Sanskar Shukla 4 years ago

You can get the answer by the formula--F=GM1*m2/Rsquare

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Satya Jiban 4 years ago

Gravitation

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A body of mass 5kg is moving with a velocity of 10m/s. A force is applied to it so that in 25seconds, it attains a velocity of 35m/s. Calculate the value of the force applied

Posted by Naziya Ppns 4 years ago

CBSE > Class 09 > Science

2 answers

Sanskar Shukla 4 years ago

5 Neuton is the answer

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Riya Mangang 4 years ago

F=ma m=5kg, a=(35m/s-10m/s)/25 =25/25 =1 F=5*1 =5N

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Define osmosis.what happens when a plant cell is put into a hypertonic medium ??

Posted by Sumi Deep 4 years ago

CBSE > Class 09 > Science

2 answers

Nanthithaa Varshini 4 years ago

Osmosis is the the process of solvent moving from lower concentration to higher concentration. It requires a semi permeable membrane. When the cell is placed in a hypertonic solution water does moves out of the cell andnit gets shrinked

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Alok Gupta 4 years ago

Osmosis is the spontaneous net movement of solvent molecules through a selectively permeable membrane into a region of higher solute concentration, in the direction that tends to equalize the solute concentrations on the two sides. When a plant cell is placed in a solution that is hypertonic relative to the cytoplasm, water moves out of the cell and the cell shrinks.

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Defin the term "chemically pure substances"?

Posted by Nandita Bhoy 4 years ago

CBSE > Class 09 > Science

1 answers

Yogita Ingle 4 years ago

Pure substances are substances that are made up of only one kind of particles and has a fixed or constant structure.

Pure substances are mostly homogeneous in nature containing only one type of atoms or molecules.
These substances mainly have a constant or uniform composition throughout.
The substances have fixed boiling and melting points.

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I have some silly doubts in third chapter atoms and molecules plz clarify it - how can we write the formulas of any compounds whenever I have not given their chemical name instead given their commonly name .?? Like - write the formula of sea salt ???if u feel that this is a stupid question then do not give answer???

Posted by Palak Pandey 4 years ago

CBSE > Class 09 > Science

5 answers

Palak Pandey 4 years ago

This is not enough plz read full ??

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Aditi.T Rajesh 4 years ago

The formula for sea salt is NaCl. Similarly, baking soda is also sodium bicarbonate,i.e.,NaHCO3

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Priyanka Sahni 4 years ago

Me too have so many doubts in chapter 3

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Chandni Sehajpal 4 years ago

Your questions is not stupid I have also problems in formulas

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Chandni Sehajpal 4 years ago

3 chapter sanu karvaya nahe va

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My exams are near how to manage time for each subject

Posted by Mishika Pandey 4 years ago

CBSE > Class 09 > Science

2 answers

Harshika Yadav 4 years ago

Sabhi ko ak ak karka padho???

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A C 4 years ago

Sabhi ko half an hour do

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science chp.10 class 9 (physics ) example 10.1

Posted by Tutul ?? 4 years ago

CBSE > Class 09 > Science

0 answers

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What is the use of valency

Posted by Abhinav Yadav 4 years ago

CBSE > Class 09 > Science

1 answers

Emiway X Gaming 4 years ago

The number of electrons present in the outer layer of an atom is known as its valency

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What magnitude

Posted by Sarvesh S Subramanian 4 years ago

CBSE > Class 09 > Science

1 answers

Yogita Ingle 4 years ago

Magnitude of a physical quantity tells us about the quantity of the physical quantity
(i.e., How much of the physical quantity)
Example: If we say a displacement 500 m. It does mean that distance is measure in metre, but how many metres?
500. So this 500 is the magnitude in case of displacement 500 m.

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What is Funga

Posted by A B 4 years ago

CBSE > Class 09 > Science

1 answers

Yogita Ingle 4 years ago

The organisms belonging to this group are heterotrophic (Consume the food from the environment) eukaryotic organisms.
The organisms belonging to this group consume decaying organic material as food. Therefore they are called saprophytes.
These organisms can become multicellular organisms at specific stages of their lives.
The cell-walls of these organisms are made of a tough complex sugar called chitin.
Examples of organisms belonging to this group are yeast and mushrooms.

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Why the life does not exist on venus and Mars?

Posted by Tandel Tejal Rajeshkumar 4 years ago

CBSE > Class 09 > Science

5 answers

Sanskar Shukla 4 years ago

There is no gravity, oxygen and something else in Mars and venus and also they are very close to sun ☀

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Radha Kothari 4 years ago

Because Mars and Venus are very close to sun thatswhy they are hot ? and water doesn't exist on the planets

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Abhishek Chaudhary 4 years ago

Because Venus and Mars ara hot planet and the isn't exit on both planet

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Anurag Rawat 4 years ago

Because Venus and Mars don't found water .

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Raj Baibhav 4 years ago

Because of the hottest on these planet by the sun

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Name the different types of plastids and explain their functions ??

Posted by Sumi Deep 4 years ago

CBSE > Class 09 > Science

2 answers

Abhishek Chaudhary 4 years ago

Three types of plastids are: 1. Chloroplast = it has green colour pigment called chlorophyll which is essential for photosynthesis . 2 . Chromoplast = it helps to give colour to the parts of the plants. For ex =flowers and friut . 3 . Leucoplast = it is a colorless plastid which helps to store like carbohydrates and protein.

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Muskan Singh 4 years ago

Three types of plastids are Chloroplast Chromoplast Leucoplast 1. Chloroplast = It has green colour pigment called chlorophyll which is essential for photosynthesis. 2. Chromoplast = It contain colourful pigments . These are found in the colourful parts of plant such as flower and fruits. 3. Leucoplast = It is a colourless plastid and the food like carbohydrate, protein are stored in it.

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When 3.0 g of carbon is burnt in 8.00g oxygen, 11.00g of carbon dioxide is produced . What mass of carbon dioxide Will be formed when 3.00g of carbon is burnt in 50.00 g of oxygen ? Which law of chemical combination will govern your answer ?

Posted by Muskan Singh 4 years ago

CBSE > Class 09 > Science