Answer:

Explanation:

For transitions:


Also, 
Where,
h is Plank's constant having value 
c is the speed of light having value 
So,


So,

Given, 




1 m = 10⁻⁹ nm

It is because change in the Mass of the object balances the change in the Volume of the object equally...........
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When two objects collide there will be a force acting on them both and their individual kinetic energies and momenta may alter. As you know already, energy is always conserved but in a collision some, or all of the kinetic energy may be ... of the same mass and traveling at the same speed but in opposite directions collided ...