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The combination effect of force and Area on which it acts can be described by a quantity call presure!

And the reslation is...
IPressure is the Force acting on a body per unit area.

The Formula used is P=F/A

Converting the EQUALITY to proprtionality, we can conclude that pressure varies directly with Force and varies inversely with Area.

More the force, more the pressure and less the surface area, more the pressure.

Taking an EXAMPLE of Pushing a Thumbnail into a wall

In solids

Think about these two situations:

Pushing a drawing pin into a wall POINTY end towards the wall.

Pushing a drawing pin into a wall pointy end towards your thumb.

Two SIMILAR activities with two very different results.

The reason for this is the difference in pressure. Assuming the same force is applied, each case would have a different pressure acting on the thumb. In the first diagram the thumb pushes on a large area so the force is spread out and the pressure is low. In the second diagram the force is concentrated on a small area so the pressure is much higher.

If a force is applied over a smaller surface area you get a larger pressure.

In liquids

A car-break system can be taken as an example

In gases

Boyle and Charles LAW for ideal gases

HOPE IT HELPS!

As the Napoleon BALLS GO on sublimation reaction in which the SOLID is DIRECTLY turned into gas without leaving any RESIDUE

It is the movement of people from one place to another WITHIN a country is called internal MIGRATION for example if you move from Bihar to DELHI it will be an internal migration I HOPE you understand THANK you

Zinc chloride and calcium chloride, as well as potassium hydroxide and sodium hydroxide (and MANY different SALTS), are so HYGROSCOPIC that they readily dissolve in the WATER they absorb: this property is CALLED deliquescence.

Hey mate here is your ANSWER..
Selective breeding is the process by which HUMANS USE animal breeding and plant breeding to selectively develop particular phenotypic traits by CHOOSING which typically animal or plant males and females ... 
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hope it will help you my dear friend.

The usee of metals qnd non metals in plants are

1. for the exchange of ions
2. for making food
3. to grow
4. for balancing water and SALT balance
5. for nutirtion
6. for reparation
7. for respiration

the uses of metals and non metals in animals are
1. for nutrition
2. for DIGESTION of food
3. as medicines
4. as ADDITIVE in foods
5. for other biological PURPOSES such as respiration,transportation.


Hope this will HELP you

Cooking, BURNING of WOOD, PHOTOSYNTHESIS, Respiration, Growth, etc

1 .FORMATION of Ice from water
2. slap on CHEEK
3. boiling of water then converted into vapour 4. HAMMERING the iron

Melting a sugar cube is a PHYSICAL changebecause the substance is STILL sugar. Burninga sugar cube is a chemical change. Fire activates a chemical reaction between SUGARAND OXYGEN. The oxygen in the air reacts with the sugar and the chemical BONDS are broken.

Yrr mere paas HAI par PROBLEM YE hai ki AAPKO KESE du????

Hi dear the QUESTION can be solve by stichometric first BALANCE the given reaction from there you would know 1g of mg NEED 1.5 GRAM of oxygen given oxygen mass is 1g so SUBTRACT 1.5-1=0.5g of oxygen will left

Pt          OH
+2            -1
=Pt(OH)2
VALENCY of PLATINUM is +2 and valency of OH is -1
so,when we INTERCHANGE them the valency of Pt goes with OH and valency of OH goes with Pt

At ROOM TEMPERATURE... that is up to 25degree

Latent HEAT of fusion is the PROCESS of heat in an BODY which start heat by applying TEMPERATURE of 1 degree Celsius to the body of 1kg

Heya....!!!

HERE IS YOUR ANSWER
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A DOUBLE DISPLACEMENT REACTION can be a REDO reaction if both oxidation and reduction takes place. It means that removal and addition if oxygen both takes place from on element to another.

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The compound C3H4 which is an alkyne decolorises BR water as it has pi BONDS on which Br GETS added on each side. 1 and 3 are alkanes group. Just can be found by their general formula. Others don't have any DOUBLE bond.

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It is 0.1 MOLAL SOLUTION..
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Heya dear frnd here is your answer
MOLECULES is a small PARTICLES of substance which is independent N molecules in the m9st elements are made of up ATOMS hence atom are not independent

A DILUTE SOLUTION CONTAINS less solute that a CONCENTRATED solution, which basically means that a dilute solution has less mixed in it, whereas a concentrated solution has more mixed in it.

Definitions. A filament yarn is made of ONE or more continuous strands called FILAMENTS with each component filament running the whole length of the yarn. Those YARNS COMPOSED of one filament are called monofilament yarns, and those containing more filaments are known as multifilament yarns.

Isoelectronic refers to two atoms, IONS or molecules that have the same electronic STRUCTURE and the same number of valence ELECTRONS. The TERM means "equal electric" or "equal charge". Isoelectronic chemical species typically DISPLAY similar chemical properties. Atoms or ions with the same electronic configurations are said to be isoelectronic to each other or to have the same isoelectronicity
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Magnesium is a reactive metal .When it comes in contact of air it FORMS a INERT LAYER over its surface which prevent it from burning .So magnesium ribbon is cleaned before burning to remove that layer
_______ Hope it HELPS

Hello Student
Given:
P1=1.2 bar
V1=120 ml
V2 =180 ml
Using BOYLE's law:
P1V1=P2V2
or
P2 = 0.8 bar
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The UTENSILS we are using ,the jewellery we are WEARING, then in eletrical switches different types of METAL are USED

HOLA !!

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✔ The chemical which REACT to give a new substance is called as a REACTANT

✔ The chemical formed after the reaction is called PRODUCT

✔ Always reactants are on LHS

✔ Always product are on RHS

✔ Mg + O = Mgo

✔ Mg and O are the reactants because they reacted to give Mgo

✔ Mgo is the product as it is obtained by reaction of Mg and O

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HOPE U UNDERSTAND ✌

I HOPE this is USE FULL

Evaporation and boiling are both processes that take place in liquids where a CHANGE of state occurs liquid → gas.

Evaporation can take place at any temperature between the melting point and boiling point of a liquid. But boiling can only OCCUR at the boiling point (ALTHOUGH boiling point does vary based on atmospheric pressure)

When evaporation occurs, PARTICLES only change into gas at the surface of the liquid. When boiling occurs particles change from liquid to gas throughout the whole liquid.

hope it's helpful

Because during melting and BOILING the hidden heat is USED which is known as latent heat of ENERGY. therefore TEMPERATURE of a SUBSTANCE remains same.

CH3COOH + C2H5OH --CONC.--h2so4------->CH3COOCH2CH3 + H2O

(ethanoic acid). (ethanol). (ethyl acetate) (WATER)

An ATOMIC mass UNIT DEFINED as precisely the mass of an ATOM of carbon -12

ANYTHING in our surrounding which occupies SPACE and bears MASS are said to be as matter.

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EXAMPLES of matters are chair BOOKS paper pencil etc

They do not wet easily.
They do not absorb sweat from skin.
The mono-fibers do not trap air pockets like cotton and provide poor insulation.
In case of fire the synthetic fibers may melt, CAUSING higher burns than the natural fibers. Synthetic fibers do not easily take up DYES as natural fibers.
These fibers may burn more READILY than natural fibers.
They are PRONE to HEAT damage and melt easily.
They can be damaged by hot washing....

Hope it helps you..
Cheers
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Conical Flasks come in a wide range of sizes, MATERIALS and uses. Commonly used LABORATORY flasks include: An Erlenmeyer flask, conical, or E-flask which is one of the most commonly used flasks in scientific laboratories. The flask has a conical base that ALMOST extends into a SMALL, cylindrical neck.
This is the main reason why these types of flasjs are used.
Another reason is that they are more efficient than normal flasks.