Engineering Chemistry - II 

                         Unit -III (1 Marks)

                           3.3 Refractory

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                  Engineering Chemistry - II 

                         Unit -III (1 Marks)

                      3.2 Rocket propellants

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                  Engineering Chemistry - II 

                         Unit -III (1 Marks)

                          3.1 Fuels - II

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                  Engineering Chemistry - II 

                         Unit -III (1 Marks)

                          3.1 Fuels - I

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The two circles touch each other

 

The two circles touch externally :

The distance between their centers is equal to the sum of their radii.

C₁C₂  =  r₁ + r₂

The two circles touch internally :

The distance between their centers is equal to the difference of their radii.

C₁ C₂  =  C₁P − C₂P  =  r₁ − r₂

Differentiation real Life Application

 

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