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yash kumar wrote:what is the difference b/w 'G' & 'g'

in 'Gravitation'

'G' is the the gravitational constant an 'g' is the acceleration due to gravity on earth

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the difference between g and G is :

g is the acceleration due to gravity . it varies from place to place.
whereas,
G is the universal gravitational constant and it is same everywhere,i.e, it is constant .

A chemical reaction is a process that leads to the transformation of one set of chemical substances to another.[1] Classically, chemical reactions encompass changes that only involve the positions of electrons in the forming and breaking of chemical bonds between atoms, with no change to the nuclei (no change to the elements present), and can often be described by a chemical equation.





Equations

As seen from the equation CH
4 + 2 O
2 → CO
2 + 2 H
2O, a coefficient of 2 must be placed before the oxygen gas on the reactants side and before the water on the products side in order for, as per the law of conservation of mass, the quantity of each element does not change during the reaction
Main article: Chemical equation
Chemical equations are used to graphically illustrate chemical reactions. They consist of chemical or structural formulas of the reactants on the left and those of the products on the right. They are separated by an arrow (→) which indicates the direction and type of the reaction; the arrow is read as the word "yields".[7] The tip of the arrow points in the direction in which the reaction proceeds. A double arrow (is in equilibrium with) pointing in opposite directions is used for equilibrium reactions. Equations should be balanced according to the stoichiometry, the number of atoms of each species should be the same on both sides of the equation. This is achieved by scaling the number of involved molecules (A, B, C and D in a schematic example below) by the appropriate integers a, b, c







Elementary reactions
\mathrm{AB \longrightarrow A + B}
Dissociation of a molecule AB into fragments A and B
For bimolecular reactions, two molecules collide and react with each other. Their merger is called chemical synthesis or an addition reaction.

\mathrm{A + B \longrightarrow AB}
Another possibility is that only a portion of one molecule is transferred to the other molecule. This type of reaction occurs, for example, in redox and acid-base reactions. In redox reactions, the transferred particle is an electron, whereas in acid-base reactions it is a proton. This type of reaction is also called metathesis.

\mathrm{HA + B \longrightarrow A + HB}
for example

NaCl_{(aq)} + AgNO_{3(aq)} \longrightarrow NaNO_{3(aq)} + AgCl_{(s)}


this is a description of chemical and reactions

what is the difference b/w 'G' & 'g'

in 'Gravitation'

Sanya Seth wrote:Hey!
Can anyone tell me what is the direction of velocity of an object moving along a circular path?

Here is your answer Sanya!!!!

 The direction of velocity of an object moving along a circular path is along the tangent to the circle at every point.

     

Hey!
Can anyone tell me what is the direction of velocity of an object moving along a circular path?

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HEY THERES AN IMPORTANT AND AMAZING QUESTION                                                                                                                                          
WHY DO WE SNEEZE ? AND WHY ARE OUR EYES ARE OFTEN CLOSED?

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Why do we dream?

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VK KUMAR wrote:

Aneesh Yadav wrote:Hey Guys!!!!!  there's an interesting question.
We know that the value gravitational constant is approximately 6.674×10−11 N⋅m2/kg2 and denoted by letter G.
But how we were able to find the value of G i.e., gravitational constant.  
     

THE VALUE OF G WAS FOUND OUT BY HENRY CAVENDISH [1731-1810] BY USING A SENSITIVE BALANCE THE ACCEPTED VALUE IS 6.67 *10 -11 NM2 \KG2

Thank You Vishal...

Aneesh Yadav wrote:Hey Guys!!!!!  there's an interesting question.
We know that the value gravitational constant is approximately 6.674×10−11 N⋅m2/kg2 and denoted by letter G.
But how we were able to find the value of G i.e., gravitational constant.  
     

THE VALUE OF G WAS FOUND OUT BY HENRY CAVENDISH [1731-1810] BY USING A SENSITIVE BALANCE THE ACCEPTED VALUE IS 6.67 *10 -11 NM2 \KG2

Hey Guys!!!!! there's an interesting question.
We know that the value gravitational constant is approximately 6.674×10−11 N⋅m2/kg2 and denoted by letter G.
But how we were able to find the value of G i.e., gravitational constant.  
     

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