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A constant error is something that does not change as the variable you are observing changes. For example, a set of scales that are always 0.3kg off. No matter who is standing on them, they will always get a reading that is 0.3kg greater than their actual mass. A proportional error changes as the variable you are observing changes, but more importantly it changes in a way that can be predicted.
The simple answer to this would be no. Density is the mass per volume of a substance so if you were to add either one of these quantities the other would have to rise by a proportional amount and the density would remain constant. However this become untrue when the amount of matter you are dealing with become on the order of a planetary mass. This much matter will produce a gravitational field which will cause pressures to result that will be enough to invoke a phase change in the portions from the center of the mass on outwards. In this case the density will change with the change in phase.
No. The units don't matter, the circumference always equals pi times the diameter. (This is only true of the circumference and diameter are in the same units. If for example, the circumference was in feet and the diameter in inches, the feet must be change to inches or the inches to feet in order for this relationship to be true.)
matter and energy
solid
No. Force of gravity is not time dependent. It is proportional to the product of masses of the earth and the matter in question and inversely proportional to the square of the distance between the center of the earth and the center of the matter.
I assume by "weight" what you really mean is "mass". In that case, yes, a given amount of matter has the same mass whether it is a solid, a liquid, or a gas. Only the volume and the density change, in an inversely proportional relationship.
The principle of Newton's Gravity is that all matter attracts other matter and the strength of the attraction is proportional to the product of the matter and inverse to the separation of the matter. The Constant G is the proportional constant.
Yes, matter and energy are equivalent and proportional according to the equation E = mc2.
Matter has mass, proportional to the quantity of matter in it, and associated with mass is Gravity.
NO that had nothing to do with what your doing now that's the past you did it you cant change it o well it doesn't really matter
matter is not related to inertia. Mass is.
A physical change does not change the identity of matter.
Dark matter's strength is proportional to it's mass. This means that more dark matter in one spot is stronger then a little bit of dark matter in that same spot.
Anti-matter. when they come into contact, they annihilate each other releasing vast quantities of energy (which is proportional to their masses).
Anti-matter. when they come into contact, they annihilate each other releasing vast quantities of energy (which is proportional to their masses).
Having a due proportion, or comparative relation; being in suitable proportion or degree; as, the parts of an edifice are proportional., Relating to, or securing, proportion., Constituting a proportion; having the same, or a constant, ratio; as, proportional quantities; momentum is proportional to quantity of matter., Any number or quantity in a proportion; as, a mean proportional., The combining weight or equivalent of an element.