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  • 1 answers

Ajit Kumar 5 years, 9 months ago

Because he made up of five element,- earth air, sky, water, soil
  • 1 answers

Anupam Dutti 5 years, 9 months ago

no as na is also an ion
  • 2 answers

Neha Dahiya 5 years, 9 months ago

small width in relation to length

Pushpreet Kaur 5 years, 9 months ago

Wide
  • 1 answers

Sharan Hari 5 years, 9 months ago

We wear cotton clothes in summer because the cotton has some tiny wholes in it.it is free to pass air both inside and outside and for evaporate of our sweats too☺☺☺
  • 1 answers

Meghna Thapar 5 years, 7 months ago

The air that covers the whole of the Earth like a blanket, is called the atmosphere.

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Alauddin Mollah 5 years, 9 months ago

Because it is always opposite of gravitational force.
  • 2 answers

Yogita Ingle 5 years, 9 months ago

Consider two colliding particles A and B whose masses are m1 and m2 with initial and final velocities as u1 and v1 of A and u2 and v2of B. The time of contact between two particles is given as t.

A=m1(v1−u1) (change in momentum of particle A)

B=m2(v2−u2) (change in momentum of particle B)

FBA=−FAB (from third law of motion)

FBA=m2∗a2=m2(v2−u2)/t

FAB=m1∗a1=m1(v1−u1)/t

m2(v2−u2)/t=−m1(v1−u1)/t

m1u1+m2u2=m1v1+m2v2

Therefore, above is the equation of law of conservation of momentum where, m1u1+m2u2 is the representation of total momentum of particles A and B before collision and m1v1+m2v2 is the representation of total momentum of particles A and B after collision.

Jasmeet Kaur 5 years, 9 months ago

F=ma
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Gaurav Seth 5 years, 9 months ago

  1. The organisms belonging to this group are bilaterally symmetrical.
  2. The coelomic cavity is reduced in these organisms.
  3. There is little segmentation.
  4. They have an open circulatory system.
  5. They have kidney-like organs for excretion.
  6. There is a foot that helps for movement.
  7. Examples of animals belonging to this group are snails and mussels, pila, unio.

Naman Kaur 5 years, 9 months ago

Features of mollusca: 1.these are bilaterally symmetrical 2.they have a reduced coelomic cavity 3.there is little segmentation 4.they have open circulatory system and kidney like organs for excretion 5.there is a foot for movong around Examples: snails, mussels, chitton, octopus, pila, unio. Hope it helped!
  • 3 answers

Mehak ❤️ 5 years, 9 months ago

The upward force exerted by a liquid on any object immersed in it is called buoyance or upthrust.

Nisha Setia 5 years, 9 months ago

The force applied by water in upward direction that is called buoyance force

Deepak Daksh 5 years, 9 months ago

Upward force applied by water on an object is called buoyancy force.
  • 2 answers

Komal Gadkar 5 years, 9 months ago

Lignin is a chemical substance present in hard and stiff part of plant or tree which acts as cement hardens them.

Dipanshu Bhatia 5 years, 9 months ago

It's a cement like substance present in sclerenchyma . You will study further about in higher classes.
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Aaquib Khan 5 years, 9 months ago

1) Universal law of gravitation. 2)Unit of gravitational constant (G)& value. 3) Kepler's law of planetary motio. 4)free fall & their concept of numericals. 4)Mass & Weight. 5)mass on the moon. 6) Thrust & pressure.etc.......
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Yogita Ingle 5 years, 9 months ago

  • Sound is a form of energy which is produced by vibration of objects. Vibrations are rapid to and fro motion of an object.
  • When a body vibrates, a disturbance is created in the medium by the particles.
  • This disturbance travels in the form of waves. This produces sound.

Ayushi Maheshwari 5 years, 9 months ago

Sound is a form of energy and it is produced by vibration.

Aiman Afandi 5 years, 9 months ago

Sound isa form of energy. It is produced by vibration
  • 1 answers

Ayesha Ali 5 years, 9 months ago

Jupiter 24.5 m/s2 or 80 ft/s 2 2.54
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Komal Gadkar 5 years, 9 months ago

Livestok can be simply defined as food provided for animal husbandary.

Ayesha Ali 5 years, 9 months ago

Livestock is commonly defined as domesticated animals raised in an agricultural setting to produce labor and commodities such as meat, eggs, milk, fur, leather, and wool. The term is sometimes used to refer solely to those that are bred for consumption, while other times it refers only to farmed ruminants, such as cattle and goats.[1] Horses are considered livestock in the United States.[2] The USDA classifies pork, veal, beef, and lamb as livestock and all livestock as red meat. Poultry and fish are not included in the category.[3]
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Shriwayanta Maiti 5 years, 9 months ago

Homo sepians

Siddheswar Mandal 5 years, 9 months ago

homosapians

Bhumika Kunwar Hada 5 years, 9 months ago

Homo sepians

Aman Kumar 5 years, 9 months ago

Homosepians
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Yogita Ingle 5 years, 9 months ago

Kidneys are the main organ of the human excretory system. The kidneys are paired organs in each individual. They are the primary excretory organ in humans and are located one on each side of the spine at the level of the liver. They are divided into three regions- the renal cortex which is the outer layer, the renal medulla which is the inner layer and the renal pelvis which is responsible for carrying the urine from the kidney to the ureter. The functional unit of a kidney is called the nephron.

Bhumika Kunwar Hada 5 years, 9 months ago

To purify blood and remove the toxic waste
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Vrushti Doshi 5 years, 9 months ago

CBSE > Class 09 > Science > 15 Improvement in Food Resources > Revision notes
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Yogita Ingle 5 years, 9 months ago

Atmosphere is essential for life because of the following reasons:  It acts as a blanket and keeps the average temperature of the Earth fairly steady by preventing sudden increase in temperature during the day and slowing down the escape of heat into outer space during the night.

Shiva, Ganesh Lakshmi 5 years, 9 months ago

No
  • 3 answers

Dipanshu Bhatia 5 years, 9 months ago

Porifera

Gurman Deep Kaur 5 years, 9 months ago

Porifera

Shiva, Ganesh Lakshmi 5 years, 9 months ago

Why is the atmosphere essential for life
  • 2 answers

Gurman Deep Kaur 5 years, 9 months ago

There are no mcq in ncert book

Gurman Deep Kaur 5 years, 9 months ago

With your hands and brain
  • 2 answers

Karishma Saini 5 years, 9 months ago

Vp(rho)g Or Loss in weight

Ashi Gupta 5 years, 9 months ago

buoyant force = volume of the object * density of the liquid * acceleration due to gravity
  • 1 answers

Lavish Kumar 5 years, 9 months ago

Histology
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Yogita Ingle 5 years, 9 months ago

The instantaneous formation of a dipole in the molecule of an organic compound due to the complete transfer of shared pi electron pairs to one of the atoms under the influence of an attacking reagent is referred to as the Electromeric effect.

This effect can be observed in organic compounds that contain at least one multiple bond. When the atoms participating in this multiple bond come under the influence of an attacking reagent, one pi bonding pair of electrons is completely transferred to one of the two atoms.

The electromeric effect is a temporary effect that remains as long as the attacking reagent is present and exposed to the organic compound. Once this attacking reagent is removed from the system, the molecule that was polarized goes back to its original state.

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