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State universal law of gravitation?

Posted by Srishti Bhadula 7 years, 5 months ago

1 answers

Vikramaditya Mondal 7 years, 5 months ago

the force of gravitation is directly proportional to the product of the masses and inversely proportional to the square of the distance between them that is g= Gm1m2/R2

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Who give christmas pudding model

Posted by Pradeep Kumar Kumar 7 years, 5 months ago

CBSE > Class 09 > Science

1 answers

Sanaya 7 years, 5 months ago

JJ Thompson

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Difference between non chordatas and chordates

Posted by Diya Singhal 4 years, 9 months ago

CBSE > Class 09 > Science

1 answers

Sia ? 4 years, 9 months ago

	Chordates	Non-Chordates
Notochord	Presence of cord or notochord.	Absence of cord or notochord.
Limbs	Limbs are two pairs.	Limbs may be more than two pairs.
Heart	Heart is ventral with hemoglobin, RBC and limbs.	Heart is in a dorsal or lateral position with limbs.
Examples	Frog, fish, bird, reptiles, amphibians and mammals.	Cockroach, earthworms, flatworms, jellyfish, sponges, insects, water bears, and other arthropods, annelids and protozoans.
Post **** tail	They have post **** tail associated with them.	No post **** tail is present in non-chordates.
Circulatory System	Chordates have a closed circulatory system.	Usually open circulation of blood takes place in non-chordates.
Nerve Cord	Dorsal, hollow and single nerve cord is present in chordates. The nerve cord is without ganglia.	Ventral, solid and double nerve cord is present. The nerve cord of non-chordates have ganglia.
Gill slits	Pharyngeal gill slits are present.	Pharyngeal gill slits are absent.
Respiration	Respiration occurs through the gills or lungs in chordates.	Respiration occurs through trachea, gills or body surface in non-chordates.
Body fluid	Hemoglobin is present in chordates.	Hemoglobin is absent, instead, hemolymph is present which is analogous to bloods in the vertebrates.
Germ layer	Talking about the germ layer, chordates are triploblastic.	Talking about the germ layer of non-chordates, they can be diploblastic, triploblastic or neither.
Symmetry	These animals are bilaterally symmetric.	These animals can be bilateral, bi-radial, asymmetrical or radial.
Coelomates	They are true coelomates.	They can either be true coelomates, acoelomates or pseudocoelomates.
Exoskeleton	Exoskeleton is present in some of the chordates, for example, tortoises.	Exoskeleton is present in all non-chordates.
Endoskeleton	Endoskeleton is present in chordates.	Endoskeleton is absent in non-chordates.
Regeneration	Chordates have poor regeneration.	Non-chordates have good regeneration, mostly.
****	The **** of these animals is differentiated and opens before the last segment.	**** in these animals is usually absent and if present, it opens on the last segment.
Brain	The brain of chordates is present, and located dorsal to the pharynx in head.	Brain is not as complex as that of chordates if present in some of the animals.
Organization	They have a body with an organ system.	Their body organization is protoplasmic to the organ system.

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What is the unit of mass and weight

Posted by Sanaya 7 years, 5 months ago

CBSE > Class 09 > Science

5 answers

Megha Singla 7 years, 5 months ago

Unit of mass=kg ; unit of weight=newton

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Rishabh 2909 7 years, 5 months ago

Mass= kg,. Weight= Newton (N)

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Pradeep Kumar Kumar 7 years, 5 months ago

Unit of mass=kg,gm , weight=kg,gm

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Shreya Kim 7 years, 5 months ago

Unit of mass=kg ; unit of weight = newton

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Diya Singhal 7 years, 5 months ago

Unit of mass is kg . unit of weight is newton

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Momentum is scaler or vector quantity

Posted by Sanaya 7 years, 5 months ago

CBSE > Class 09 > Science

6 answers

Megha Singla 7 years, 5 months ago

It is a vector quantity

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Vilen 7 years, 5 months ago

Its a vector quantity

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Pradeep Kumar Kumar 7 years, 5 months ago

Its ia a vector quantity

1Thank You

Kuldeep Singh 7 years, 5 months ago

Vector quantity

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Roszhan Raj 7 years, 5 months ago

vector

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Sakshi Jadhav 7 years, 5 months ago

Momentum is a vector quantity

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Displacement has both ........ And ........

Posted by Sanaya 7 years, 5 months ago

CBSE > Class 09 > Science

4 answers

Anam Fatima 7 years, 5 months ago

Direction and magnitude.

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Rishabh 2909 7 years, 5 months ago

Direction, magnitude

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Shreya Kim 7 years, 5 months ago

Direction and magnitude

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Yogitha Queen 7 years, 5 months ago

Displacement

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What is the scientific name of amitav bachan

Posted by Saroj Kumar Mohanta Saroj Kumar Mohanta 5 years, 11 months ago

CBSE > Class 09 > Science

0 answers

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If the mass of one object is doubled then the new force will be?

Posted by Ojasva Dewangan 7 years, 5 months ago

CBSE > Class 09 > Science

3 answers

Megha Singla 7 years, 5 months ago

Two times

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Shreya Kim 7 years, 5 months ago

Two times more

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Goutam Dalal 7 years, 5 months ago

Two times

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why do we classify organisms ?

Posted by G Madhu 7 years, 5 months ago

CBSE > Class 09 > Science

0 answers

ANSWER

what is mother liquor

Posted by Sahil Chalotra 7 years, 5 months ago

CBSE > Class 09 > Science

0 answers

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An object experiences a net zero external unbalanced force . Is it possible for the object to be travelling with a non zero velocity? If yes , state the condition that must be placed on the magnitude and direction of velocity. If no provide a reason.

Posted by Sujaya Rout 7 years, 5 months ago

CBSE > Class 09 > Science

0 answers

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2 boys each of mass 50 kg are sitting on a bench and the separation between them is0.5what is the magnitude of gravitational force will a boy detect this force

Posted by Lovepreet Kalra 7 years, 5 months ago

CBSE > Class 09 > Science

0 answers

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List two properties of partical of matter

Posted by Raj Booss 7 years, 5 months ago

CBSE > Class 09 > Science

3 answers

Sanskruti Patil 7 years, 5 months ago

1-Particles of matter attract each other. 2-Particles of matter are continuosly moving. 3-Particles of matte have intermolecular space between them.

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Anam Fatima 7 years, 5 months ago

1.particles of matter attract each other. 2.particles of matter continously moving.

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Mani Kaur 7 years, 5 months ago

Have interpartical space and interpartical force

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What is pressure...??

Posted by Aryan Sangwan 7 years, 5 months ago

CBSE > Class 09 > Science

1 answers

Renu Gulati 7 years, 5 months ago

Pressure is the force applied perpendicular to the surface of an object per unit area over which that force is distributed. Gauge pressure (also spelled gage pressure)is the pressure relative to the ambient pressure. Various units are used to express pressure. Some of these derive from a unit of force divided by a unit of area; the SI unit of pressure, the pascal (Pa), for example, is one newton per square metre; similarly, the pound-force per square inch (psi) is the traditional unit of pressure in the imperial and US customary systems. Pressure may also be expressed in terms of standard atmospheric pressure; the atmosphere (atm) is equal to this pressure, and the torr is defined as 1⁄760 of this. Manometric units such as the centimetre of water, millimetre of mercury, and inch of mercury are used to express pressures in terms of the height of column of a particular fluid in a manometer.

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What is law of definite proportion

Posted by K D 7 years, 5 months ago

CBSE > Class 09 > Science

1 answers

Yogita Ingle 7 years, 5 months ago

Law of Constant Proportion states that a chemical compound always contains exactly the same proportion of elements by mass.

This law is also known as Law of definite proportions. Joseph Louis Proust gave this law hence, this law is also known as Proust’s Law.

Explanation of the law: Compounds are formed by the combination of two or more elements. In a compound the ratio of the atoms or element by mass remains always same irrespective of the source of compound. This means a certain compound always formed by the combination of atoms in same ratio by mass. If the ratio of mass of constituent atoms will be altered the new compound is formed.

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The results of online tests of science are wrong

Posted by Ayush Singh 7 years, 5 months ago

CBSE > Class 09 > Science

1 answers

Renu Gulati 7 years, 5 months ago

Yes u r right

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What is mast cell?

Posted by Rishabh 2909 7 years, 5 months ago

CBSE > Class 09 > Science

2 answers

Jang Guen Suk P 7 years, 5 months ago

Is intestine in close contact with external environment ??

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Yogita Ingle 7 years, 5 months ago

Mast cells are found in most tissues of the body, particularly in locations that are in close contact with the external environment, such as skin, airways, and intestines. Mast cells play an important protective role as well, being intimately involved in wound healing and defense against pathogens.

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What is diplosome

Posted by Sarthak Tiwari 7 years, 5 months ago

CBSE > Class 09 > Science

1 answers

Yogita Ingle 7 years, 5 months ago

A pair of centrioles are said to be diplosomes. Or a pair of centrioles arranged perpendicularly, located near the nucleus. It is present in all eukaryotic cells except for higher plants. It plays an important role in mitosis.

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Diffrence between amphioxus and cephalochordate

Posted by Sarthak Tiwari 7 years, 5 months ago

CBSE > Class 09 > Science

0 answers

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What is eisenia foetida

Posted by Sarthak Tiwari 7 years, 5 months ago

CBSE > Class 09 > Science

1 answers

Prerna Gulati 7 years, 5 months ago

Eisenia fetida (older spelling: foetida), known under various common names such as redworm, brandling worm, panfish worm, trout worm, tiger worm, red wiggler worm, red californian earth worm, etc., is a species of earthworm adapted to decaying organic material. These worms thrive in rotting vegetation, compost, and manure. They are epigean, rarely found in soil. In this trait they resemble Lumbricus rubellus. They have groups of bristles (called setae) on each segment that move in and out to grip nearby surfaces as the worms stretch and contract their muscles to push themselves forward or backward. Eisenia fetida worms are used for vermicomposting of both domestic and industrial organic waste.They are native to Europe, but have been introduced (both intentionally and unintentionally) to every other continent except Antarctica.

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What is tapetum

Posted by Sarthak Tiwari 7 years, 5 months ago

CBSE > Class 09 > Science

1 answers

Yogita Ingle 7 years, 5 months ago

The tapetum is a specialised layer of nutritive cells found within the anther, of flowering plants, where it is located between the sporangenous tissue and the anther wall. Tapetum is important for the nutrition and development of pollen grains, as well as a source of precursors for the pollen coat.

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Explain ozone layer

Posted by Miss Angel Barsha 7 years, 5 months ago

CBSE > Class 09 > Science

2 answers

Sarthak Tiwari 7 years, 5 months ago

It helps to stop the ultra violet rays on it and the antactica ke upper is ahole present so please dont do polution

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Sarthak Tiwari 7 years, 5 months ago

Bhaiya suno , O3 is ozone layer present up of stratosphere

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Who discovered osmosis

Posted by Sarthak Tiwari 7 years, 5 months ago

CBSE > Class 09 > Science

3 answers

Sarthak Tiwari 7 years, 5 months ago

Subham paul ko kuch nahi aata

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Subham Paul 7 years, 5 months ago

Your father

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Vishnu Garg 7 years, 5 months ago

Osmosis is doscovered by Henri Dutrochet

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We know that the cells of our nail is dead so how our nail recover

Posted by Priyanshu Patel 7 years, 5 months ago

CBSE > Class 09 > Science

1 answers

Sany Roy 7 years, 5 months ago

As nail is made up of keratin.

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What would happen if we cut the atom further

Posted by Somu Sir 7 years, 5 months ago

CBSE > Class 09 > Science

2 answers

Palak ?? 7 years, 5 months ago

If we cut an atom we will find it's sub particles like proton ,electron,and neutron When we further cut it we will find that al 3 sub particles are made up of quaks But if u split an atom ..,...it will blast...like an atom bombbut with low frequency

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Ritik Verma 7 years, 5 months ago

We will get its sub particles i.e protons,neutrons and electrons.

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What is cell vomiting

Posted by Gaurav Tripathi 7 years, 5 months ago

CBSE > Class 09 > Science

2 answers

Rishabh 2909 7 years, 5 months ago

Exocytosis is mainly known as 'cell vomiting'

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Sany Roy 7 years, 5 months ago

The membrane of vesicle can fuse with the plasma membrane and extrude its content to the surrounding medium. This process is called cell vomiting.

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Is God there or not

Posted by Brit Sherlee 7 years, 5 months ago

CBSE > Class 09 > Science

5 answers

Sanskruti Patil 7 years, 5 months ago

according to me there is only on god Nature

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Prerna Gulati 7 years, 5 months ago

Your question is right i also fell like is god there or not???❌??

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Palak ?? 7 years, 5 months ago

God is there but not in the idols and in persons like Krishna or Rama... He is a supernatural power of light present in every person...the person wo recognise it is referred to as God by people like us.... god meaning is generator Operator and destroyer,.these 3 functions are present in every one and everyone is god in itself.....

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Somu Sir 7 years, 5 months ago

According to science NO But according to our believe YES

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Sarvesh Periwal 7 years, 5 months ago

It may be

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Definition

Posted by Payal Mishra 7 years, 5 months ago

CBSE > Class 09 > Science