The mass of the second object is 
Explanation:
The magnitude of the gravitational force between two objects is given by
:
where
:
is the gravitational constant
m1, m2 are the masses of the two objects
r is the separation between them objects
In this problem we have:
F = 1100 N is the force
is the mass of object 1
r = 30 m is the distance between the object
Re-arranging the equation for 
, we find the mass of the second object:
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They will become equally negative charges, I believe.
This process of physically separating a single phase mixture into several components would be termed simple distillation, I believe.
As it is mentioned that one is separating them based on their different boiling points.
The atomic bomb explosion, depends on the energy released, W, the elapsed time, t, and the air density which altogether lead to the vaporisation of the contents within the mushroom cloud created.
<h3>What is an atomic bomb?</h3>
An atomic bomb is type of nuclear weapon that releases a vast amount of energy upon explosion in the form of fission reaction.
During an explosion of atomic bomb, a cloud of mushroom fire is formed which vaporises anything found within it. The extent of destruction depends on:
Therefore, the atomic bomb explosion, depends on the energy released, W, the elapsed time, t, and the air density which altogether lead to the vaporisation of the contents within the mushroom cloud created.
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