what is meant by specific gravity?
608826
It's in reference to density and is the ratio to the density of water at 25 degrees celcius.\n\nBasically, water is 1 g/cm^3. So something with a specific gravity of 25 will have a density of 25 g/cm^3.
64883
Up or away from the center of gravity.
247359
Mass interacting with gravity
1042618
weight = mass x gravity\n\nso...\n\nweight / gravity = mass\n\nthe gravitational constant on earth is approx. 9 m/s^2
389578
Anything with a specific gravity of less than about 0.6 will float on oil.
903577
You basically just asked this!!\n\nMass is the amount of matter in your body, weight is how much gravity is pulling on you.
879076
According to Newtonian gravity, gravitational force is -GMm/r^2.  Any mass experiences a gravitational force toward every other mass in the universe, proportional to the product of their masses, and inversely proportional to the square of their distance.  This means my body experiences a certain gravitational force from the sun, no matter what else is happening in the universe.  That says it would be impossible to shield me from the sun's gravity.\n\nTo find the net gravitational force on me, simply do a vector sum of all the gravitational forces on me from all other masses in the universe.  Simple to say, not so simple to do.\n\nThat sum is zero at the center of mass of the universe, wherever that is.  Unless the expansion of the universe is perfectly uniform, that point will shift with time.  I could find other points where the sum is zero.  I move away from that center of mass but toward a large nearby mass, just close enough that the pull of that nearby mass exactly balances the pull of the rest of the universe.  These will be single points, not regions.  At these points, I still can't say there's no gravitational force acting on me.  But I can say there are countless gravitational forces acting on me, but their sum is zero.\n\nLet's say I tell you I found such a zero-sum spot, about 1/3 of the way between our sun and Alpha Centauri, and I take you there.  How will you know I am telling you the truth?  The principle of equivalence says that there's no test you could make to tell whether the net gravitational force there is zero, or whether you are just accelerating according to the effect of the nonzero net force on your mass.\n\nThe relativistic warping of spacetime in the presence of gravitational mass is more a way of representing or measuring that force, rather than explaining it.  Neither Newton nor Einstein could tell us why gravity exists or how it works.  If spacetime is not warped in your region, it doesn't mean the gravitational field is zero, it means it is uniform.  And again, how would you tell whether spacetime is warped in your region?\n\nI've tried for decades to think of a gravity shield or a gravity insulator.  If I do find one, watch for my Nobel Prize in physics, and for me to quickly surpass Bill Gates on the wealth scale.
1169302
Yes, gravity exists near anything that has mass.  If you remove the air from a container, what's inside won't float.
656369
I was want to make something abundantly clear,\nTHERE IS GRAVITY IN SPACE! (despite what "keelahkat" says).\nGravity is a force of attraction acting between two masses at a distance...any distance.\n\nThe only way one would experience true "zero gravity" would be to travel an infinite distance away from all objects in the universe with mass.
324067
No. Gravity has to do with the mass of objects--you have some too.
60690
The amount of matter in an object is called its mass. The force of gravity is dependent on the amount of mass a body has. That means that the gravity on the Earth is greater than the gravity on the Moon, since the Earth has much more matter or mass than the Moon.
57362
Weight is a unit measure of gravitational force.
727214
http://en.wikipedia.org/wiki/Strain_%28materials_science%29\nhttp://en.wikipedia.org/wiki/Specific_gravity\nhttp://en.wikipedia.org/wiki/Stress_%28physics%29\nhttp://en.wikipedia.org/wiki/Reynold%27s_number
1144696
gravity and air resistance.
518582
I don't really know, but usually when you're dealing with a coefficient/a ranking based on a known parameter, you have to use a standard item against which to measure. So things like specific gravity are based on an accepted level, and phenolic compounds would be measured against plants widely known to have a certain level.
858740
I assume you mean on Earth where the gravitation constant (g) is 9.8 m/s²\nF = mg\n\n300 = 9.8 * m\nm = 300 / 9.8\nm = 30.6 kg\n\nIf you are using a rounded value for g (10 m/s²), you will come up with a mass of 30 kg.  This might be the intended answer if they want you to do it in your head.
1026812
only if they have the same density or specific gravity!