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  • 2 answers

Pradeep Mehta 4 years, 1 month ago

Suppose a car is moving with mass M , initial velocity U and final velocity V. Then rate of change in momentum =( MV - MU)/ t = M(V - U)/ t. (Taking M as a common) Acc. to second law of motion F is directly proptional to. M(V -U)/t So F is directly propotional to. MA Here v-u/ t is acceralation By removing proportionality sign F = KMA Value of K = 1 Therefore F = MA Where F is force , M is mass and A is acceralation. So acc. to 2nd law of motion F = MA. Hope it is helpful to you. ??

Vidhya Lakshmi 4 years, 1 month ago

The second law of motion states that the rate of change of momentum is directly proportional to the unbalanced force in the direction of force.
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  • 1 answers

Bhawana Singh 4 years, 1 month ago

Please give answer
  • 1 answers

Pradeep Mehta 4 years, 1 month ago

Solid
  • 3 answers

Vidhya Lakshmi 4 years, 1 month ago

25 m/s

Yogita Ingle 4 years, 1 month ago

We know that,

1 km = 1000 m

1 hour =3600

Now converting km/h into m/s, we get

90 km/h = 90 km/h x 5/18 = 25m/s.

Ranoj Nagaich 4 years, 1 month ago

25 m/s
  • 2 answers

Yogita Ingle 4 years, 1 month ago

We know that,

1 km = 1000 m

1 hour =3600

Now converting km/h into m/s, we get

90 km/h = 90 km/h x 5/18 = 25m/s.

Sarita Panda 4 years, 1 month ago

25m/s
  • 2 answers

Yogita Ingle 4 years, 1 month ago

On its entry into the body, HIV attacks macrophages.

Ash Greninja 4 years, 1 month ago

Hiv virus attacks on the white blood cell named CD4 cells in our body.
  • 2 answers

Yogita Ingle 4 years, 1 month ago

Phagocytosis is the process by which living cells like phagocytes engulf or ingest particles or infected cells.
The two types of phagocytes are neutrophils and macrophages, which are essential for immunity.

Khushbu Ashra 4 years, 1 month ago

Phagocytocis is process of intake of solid food particles
  • 1 answers

Yogita Ingle 4 years, 1 month ago

Coral polyps are short-lived microscopic organisms, which live in colonies. They flourish in shallow, mud free and warm waters. They secrete calcium carbonate. The coral secretion and their skeletons form coral deposits in the form of reefs. They are mainly of three kinds - Barrier reef, Fringing reef and Atolls. The Great Bather Reef of Australia is a good example of the first kind of coral reefs. Atolls are circular or horse shoe-shaped coral reefs.

  • 2 answers

Trilokinath Shubham 4 years, 1 month ago

10 m

Gaurav Seth 4 years, 1 month ago

A n s w e r : 1 0 m

Step - by - step explanation:

Distance covered in 1 sec.

= 5 * 36 / 18

= 5 * 2

= 10 m
Hence it will take 10 metres in one second

  • 4 answers

Krishnam Sarda 4 years, 1 month ago

m=1280kg v=3m/s As we know that, Momentum =mass × velocity p = mv p = 1280 × 3 kg m/s p = 3840 kg m/s.

Vidhya Lakshmi 4 years, 1 month ago

3840 kg m/s

Reena Jesupa 4 years, 1 month ago

I want brief answer pls

Trilokinath Shubham 4 years, 1 month ago

3840kgm/s
  • 3 answers

Sarita Panda 4 years, 1 month ago

Sublimity

Trilokinath Shubham 4 years, 1 month ago

I think sublimation

Gaurav Seth 4 years, 1 month ago

The property shown by nepthleane and not by sodium chloride is :
Naphthalene undergoes sublimation upon heating and directly changes into vapours. Sodium chloride (common salt) does not undergo sublimation. It melts on strong heating. 

  • 5 answers

Trilokinath Shubham 4 years, 1 month ago

? degree celcius

Vaibhav Kumar 4 years, 1 month ago

100 degree celesius

Rudra Vishwas 4 years, 1 month ago

100°C at atmospheric pressure.

Yogita Ingle 4 years, 1 month ago

At an atmospheric pressure of exactly 760mm Hg (1 atm), the temperature at which a liquid boils is called the normal boiling point of the liquid. For water, the vapour pressure reaches the standard atmospheric pressure of 1 atmosphere at 100°C. So the normal boiling point of water is 100°C (212°F or 373K).

Aryan Singh 4 years, 1 month ago

100
  • 1 answers

Gaurav Seth 4 years, 1 month ago

Isotope → Isotopes are atoms with the same number of protons, but differ in numbers of neutrons. Isotopes are different forms of a single element.

Example - Carbon 12 and Carbon 14 are both isotopes of carbon, one with 6 neutrons and one with 8 neutrons.

  • 1 answers

Mithul J 4 years, 1 month ago

Centrifugation Distillation Filtration Cromotography....... etc
  • 1 answers

Gaurav Seth 4 years, 1 month ago

The force of gravitation between two objects is inversely proportional to the square of the distance between them therefore the gravity will become four times if distance between them is reduced to half.

  • 2 answers

Pradeep Mehta 4 years, 1 month ago

The substances which cannot be broken down into two or more simpler substances by the process of chemical reactions are called elements.. particles of the element are identical to each other. Example such as iron ,hydrogen ,oxygen ,aluminium, copper. Atoms are the smallest particle of element.

Vansh Pal 4 years, 1 month ago

Hlo
  • 1 answers

Gaurav Seth 4 years, 1 month ago

A colloid is a kind of solution in which the size of solute particles is intermediate between those in true solutions and those in suspensions.
For Example: - Soap solution, Milk, Ink, Blood and solutions of synthetic detergents.

In a true solution, the solute particles are so small that they cannot scatter or reflect light rays falling on them.
In a colloidal solution (or colloid), the particles are big enough to scatter light.
If a beam of light is put on a colloidal solution kept in a beaker in a dark room, the path of light beam is illuminated and becomes visible when seen from the side.
The path of light beam becomes visible because colloidal particles are big enough to scatter light falling on them in all directions.

  • 5 answers

Mohit Kumar 4 years, 1 month ago

Hhcgjhgh sub still sum dum dum hai to wo hai is

Lone Azmat 4 years, 1 month ago

=100/20=5m/s

Lone Azmat 4 years, 1 month ago

Distance traveled=100m/s

Lone Azmat 4 years, 1 month ago

Time taken=60m/s - 40m/s T=20s

Lone Azmat 4 years, 1 month ago

Average speed =total distance traveled/total time taken
  • 1 answers

Mithul J 4 years, 1 month ago

Mixture: Made up of 2 or more different elements. Compounds: Made of 2 or more elements of the same kind. Mixture: Impure substance. Compound: Pure substance. Mixture: Mixed in different ratio. Compound: Mixed in definite ratio. Mixture: Can be separated by physical methods Compounds: Cannot be separated by physical methods
  • 2 answers

Trilokinath Shubham 4 years, 1 month ago

Velocity

Yogita Ingle 4 years, 1 month ago

In a uniform circular motion the direction of motion keeps on changing with the revolution. With the number of revolution displacement from the initial point to the final point also changes. As both these factors changes velocity also changes. But in that uniform circular motion what remains constant is speed.

B
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Yogita Ingle 4 years, 1 month ago

The number of particles (atoms, molecules or ions) present in 1 mole of any substance is fixed, with a value of 6.022 × 1023. This is an experimentally obtained value. This number is called the Avogadro Constant or Avogadro Number (represented by N0), named in honour of the Italian scientist,  Amedeo Avogadro.1 mole (of anything) = 6.022 × 1023 in number,

 

  • 2 answers

K.Kaviya Ix A 9032 4 years, 1 month ago

With steps please

Jhanvi Pandey 4 years, 1 month ago

a)58 b)49.5 c)58.5 d)58 e)74
  • 1 answers

Meghna Thapar 4 years ago

Gravitational force -an attractive force that exists between all objects with mass; an object with mass attracts another object with mass; the magnitude of the force is directly proportional to the masses of the two objects and inversely proportional to the square of the distance between the two objects. As gravitational force between two object, F∝m1m2r2 thereforce, (i) when mass of one object is doubled, the force become twice. (ii) when distance between the objects is doubled, force become (1/4) of its previous value. when the distance between the 2 objects is halved, the gravitational force between the 2 objects is doubled. when the distance between the 2 objects is doubled then the gravitational force doubles.

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