Depend on what exactly do you mean by 'common'. On one hand there are countless photon everywhere which has zero mass. But if you mean everyday objects, then zero weight of cause (free fall, space etc), as I don't think zero mass is even attainable at this scale.
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If your mass is 45.5 kilograms, then your weight on earth is about 445.9 newtons (rounded).On the moon or other planets, your mass is still 45.5 kilograms, but your weight is different,depending what body you're on.In space on the way there, your mass is still 45.5 kilograms, and your weight is zero.
Newtons (symbol: N).Do not confuse weight with mass (the unit of mass is the kilogram). Weight is the downward force exerted by a mass because of the pull of gravity.The unit of weight is Kg*m/s2Metric unit for mass is kilograms (kg), however weight is a different measurement defined as force that will act on the object due gravity of a given planet (so it measures in Newtons, N). On Earth your weight is almost the same as your mass (and that is not a coincidence) but on the other planet your mass will remain the same (say 70kg) while your weigh may change dramatically (depending on the gravity of the planet). In the free fall state your weight is zero.
A point in geometry is very similar to the common usage of the noun "point." However it must be noted that points have zero mass, zero volume, zero area, etc.; they simply denote locations in space.
It is zero. The number 02 is a number. It is a concept and no physical existence and no mass. So the mass percentage is zero.
No it can't.