Answer:
The gravitational force between a mass and the Earth is the object's weight.
Explanation:
Mass is considered a measure of an object's inertia, and its weight is the force exerted on the object in a gravitational field. On the surface of the Earth, the two forces are related by the acceleration due to gravity: Fg = mg.
Ok.. what are you asking here ?

a. Let's set a=3, b=1


In other words
is odd, i.e.
has remainder 1 when divided by 2. 
b. Let



There are 2n terms in the last factor. All the terms of the form

are odd. So when we add up an even number of them, we get an even number, call it 2m.


We've shown
is divisible by four. 
Merry Christmas!
The principle here that is not democratic is taxation without representation.
Representation is at the heart of democracy. In a democracy people need to have a way of determining their life, and this often happens indirectly, via representatives, such as members of the House of Representatives.
So a lack of representation is not a democratic principle.
No, i believe it's not acceptable
Truncation error usually happens when you truncating infinite sum and approximating it by finite sum.
An error in this calculation will possibly caused the application to crash when doing its numerical analysis.