Kanzenshuu

They could work by reducing the electromagnetic forces, which are the only ones that keep objects intact and prevent you from falling through the floor or the earth collapsing from its gravity. Since most of the atom is void, if the electromagnetic force is reduced, matter can be compressed up to ...

If we assume Earth's population = 6 billion and average power level = 5 (without counting Z-fighters) the genki dama would be equivalent to 30 billion (from general population) + whatever came from the Z-fighters. I believe that most of the energy for the genki dama came from Earth's general ...

Dragon ball simply doesn't follow the our laws of physics.

I believe that the oozaru transformation and piccolo becoming a giant increased their masses. Unless oozurus are 99% compressed air or dirt taken from the enviroment, the saiyans would have to create mass to transform.
The energy required ...

I believe that as humans are so weak (even compared with earth's animals like gorillas):
1) Their bodies use the little strength and ki they have more efficiently than saiyans
2) To compensate for their reduced strenght they have a more intense fight-or-flight response than saiyans, which combined ...

I don't believe that potara fusion can be simply multiplying their power levels.

That would fail dimensional analysis. Since the fusion power level and the power levels of each fused individuals are power levels they have to have the same dimension. Let call it [Ki].
If we have powerFusion = powerA ...

As he calls the advanced fighting techniques 'tricks' and the Z-fighters don't counter it, the people don't have the way or will to learn advanced fighting techniques. That means that if the Z-fighters are unavailable for some reason then any alien with a power level above 500 can conquer the world ...

Oh, and Bardock being able to talk and breathe in space will always be a mystery.
Well, he might still be in the atmosphere. The manga don't show almost anything, besides a panel. (and of course you won't die instantly in the space)

Since the primary use of oxygen is produce energy for the ...

I think power levels are not lineal but the square or cubic root of the actual ki strength. For example if it's square:
Child Goku 10 = (10/5)^2 = 4 times stronger than a farmer
Roshi 139 = (130/5)^2= 772 times stronger than a farmer
Freeza 530000 = 11236 million times stronger than a farmer
1.3x ...