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Realistic

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  1. The sun is a mass of hydrogen gas .. nothing else .. A vast , huge ball of hydrogen gas .. All the billions of stars, of which our sun is one, have that on characteristic in common, they are all made of hydrogen gas. Big masses of hydrogen gas, The most common element in the universe. From the outer envelope to the deepest center, hydrogen..with some increasing amounts of helium. In this universe, all mass creates an "attraction" for other masses.. The inner molecules of this huge volume of hydrogen gas molecules exert gravitational attraction to the outer molecules which is so great, that the inner most hydrogen molecules are squeezed together, fuse and form helium gas ..with a small amount of mass which is converted to energy.. radiant energy, which we call "sunshine". E = MC squared worth. No, you did not hear any reputable geologist ever say or infer that . Though Isaac Newton brilliantly described the relation ship between force, mass, and energy in the late 1600's, it was Einstein 200 years later who explained how it happens .. "Gravity" is caused by a distortion, or curve, in space in direct proportion to the two , or more, masses, which are interacting with each other. The entire mass of the earth and the entire mass of the sun, for instance, not just the core of these bodies is the source of the "gravitational" effect we observe. No. You cannot. Safely or otherwise. Every bit of mass , no matter what size its mass may be, produces, and is a source, a "gravitational effect", in proportion to its mass. ]
  2. Thank you I appreciate the assist in the Pi notation.. I'm using it down below. However I thought you were going to correct.. my blatant, obvious error .. C = 2[math]\pi[/math]r Which is the correct formula for the circumference of a circle. I earlier stated that C = [math]\pi[/math]r squared. Wrong!! Of course, that is incorrect. I should have indicated that is the formula for the area, not the circumference. As in A = [math]\pi[/math]r squared I hope I didn't get that person into difficulty with the teacher, with that wrong information .
  3. C, the circumference or a circle, is equal to Pi, R squared .. My computer does not have the symbol for Pi .. So. I'll write it out. C = Pi x r squared .. So if the radius r becomes bigger? The circumference becomes bigger as well .. Merged post follows: Consecutive posts merged I believe I answered that question above. However I'll add another piece .. The Gravitational force between the two masses, the sun and the planet is F, for force. M is equal to the mass of the planet. R is the distance of the planet from the sun .. V =the velocity of the planet around the sun. the formula for Centrpital force is F = M V squared/ R So as R gets larger, V becomes smaller. So pluto which is the outermost planet , has a larger large r, and it moves the slowest, with a smaller V.
  4. The further the distance a planet is from the sun, the weaker the combined effects of the two masses. the sun and the planet become, their combined "gravitational force" is smaller. If the gravitational force is weaker, the velocity of the planet in its orbit is slower. There fore it takes a longer period of time for the planet to orbit the sun . Yes, because pluto is much further from the sun than the earth. Your question cannot be answered as you asked it. You are not further from gravity.. Gravity is always present. However, the magnitude of the gravitational force decrease as the planet moves further and further away from the sun. thanks BTW i am in high school so please don't give me an information OVERLOAD!! Although i would like detail!!! HW VERY URGENT!! Thanks!
  5. Since I am a retired Optometrist, I feel confident that I can provide you with some useful information. From the description of your symptoms it would appear that: You've always had one eye that sees well at distance, and the other has been blurred at distance. The eye that sees well at distance is referred to as far sighted or "hyperopic". The other is nearsighted, or myopic. Now that you are aging, the eye that seems well at distance still sees well as distance but does not see well when looking a objects up close. That's normal The other eye, that was blurred at distance but clear for close work, is still functioning the same way. For you, that is normal as well. if this situation is annoying and is bothersome to your daily activities? Have your eyes examined. You will probably end up with a pair of lenses which balances and clears your vision at distance as well as close work with both eyes. These lenses would be either a progressive lens or a bifocal of some sort.
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