What is the revolution velocity of the earth about the sun in furlongs per fortnight.?
406821
Dan's result seems extremely low and the reason is that when he converted metres to inches he divided instead of multiplying so his final answer needs to be multiplied by about 1600.\n\nI don't think the earth's rotational speed around its own axis is relevant. I am unclear which Dan has taken, this or the earth's orbital speed around the sun.\n\nIf the radius of the Earth's orbit is 93 million miles, then the circumference of the orbit (assuming a circle for simplicity) is 2 pi r or 6.28 x 93 x 10^6 miles. In a fortnight (14 days out of 365) the earth will travel 14/ 365 ths of that distance (ignoring leap years for simplicity) and with 8 furlongs to a mile, that is\n\n8 x 14/365 x 6,28 x 93 x 10^6 f per f\n\nFor an approximate result, say 93 divides into 365 4 times, and divide the 4 into the 8 to leave\n\n28 x 6,28 x 10^6 furlongs per fortnight\n\n= approx 1.75 x 10^8 furlongs/fortnight\n\nOf course the sun itself is moving at about ten miles a second in the direction of Alpha Herculis, but that too is irrelevant to the calculation as is the rotational velocity of the earth on its own axis.
233745
The mean radius is 6371.0 km.  The radius at any latitude is equal to that times the cosine of the latitude.  The Earth turns once on it's axis in 23 hr 56 min 4.0989 sec, or 23.93447 hrs.\n\nIt takes that long to travel 2(Pi)(6371)(cos(lat)).  Divide that distance by the time above and you're in the ball park (neglecting the difference in polar and equatorial radii).\n\nNote: The figure given for the Earth's rotation is correct according to Astrophysical Data: Planets and Stars.  The 24-hour day is measured from noon to noon - in relation to the Sun.  The Earth kind of rolls around its orbit, so after it has turned thru one rotation it has also moved along its orbit.  It has to turn for another 53.9 sec past the full rotation for the Sun to be back to due south again.
1164152
The earth rotates about its axis.  Obviously at the poles, there is no speed to the rotation at all.  At the equator, the circumference of the earth is about 25,000 miles and it rotates once per 24 hours, so the speed would have to be 25,000/24 = 1041.67 mph.  Depending on where you are between the equator and the pole, you'll get a speed of between 0 and 1041.67 mph.
339126
KE = 1/2 mass* v²\n\nThere are two velocities.  One is spin energy, however this is a tricky one since velocity is relative to radius and polar angle.  The other is the energy of the motion around the sun, which is somewhat easier to calculate.  The earth's velocity is 30 km/s, so:\n\nKE = 1/2M* (30 km/s)² = 450M (km/s)²\n\nFor spin energy:  KE = 1/2Iω²\n\nWhere I is moment of inertia and ω is angular velocity.\n\n"As an example, let us calculate the rotational kinetic energy of the Earth. As the Earth has a period of about 23.93 hours, it has an angular velocity of 7.29×10-5 rad·s-1. Assuming that the Earth is perfectly spherical and uniform in mass density, it has a moment of inertia, I = 9.72×1037 kg·m2. Therefore, it has a rotational kinetic energy of 2.58×1029 J."
574348
Since the Sun is made of gas, different parts of it rotate at different speeds. Near the Sun's equator, it completes one rotation every 27 Earth days. But near the poles, it's about 31 Earth days. This is called "differential rotation". \n\nHope thats clear??
600116
Lets see now, Earth rotates aproximately once every 24 hours, thats one over 60 x 60 X 24, thats one over 86400 rotations per second. All the time we are doing that, consider this, we are also going around the sun at aproximately 66500 miles per hour.
948901
OK, for starters, the earth revolves around the sun, the sun does not revolve around the earth, contrary to the first poster's assertion.  In any case, the revolution of the earth around the sun has nothing to do with the length of the day.  \n\nThe length of the day is always the same, year-round, approximately 24 hours.  I think what you mean to ask is "why does the time from sunrise to sunset become shorter in winter?"\n\nThe reason is that the tilt of the earth's polar axis changes from where it is at the height of summer June 22, when it is close to perpendicular to the line from the earth to the sun, to the depth of winter December 22 when it is about 22 degrees away from the direction it tilts at the height of summer.  Because of the tilt of the earth's polar axis, the sun rises later in the morning and and sets earlier in the evening, resulting in a shorter period of sunlight each day.
220993
you are confuse because you use the earth day as reference to your question. WHy not use this one.\nspeed of light is 299,792,458 m / s (from google) and \nspeed of the earth's rotation is 1000 miles per hour (http://imagine.gsfc.nasa.gov/docs/ask_astro/answers/970401c.html).\nIt is obvious that speed of light is faster that the speed of earth's rotation.\nAnd another thing...there is no day in space because you have no source of light as reference. The term day is because of the sun of the solar system, in which we have 24hrs to 1 complete rotation of the earth.\nHope you are enlighten.\nyou just confused yourself because you used the earth's day which is 24 hrs as your reference.
79282
the average distance between the Earth and the Sun (approximately 150 million km or 93 million miles).
199932
The earth's rotation.
479647
the tilt of the earth and when it revolves around the sun
882266
Using Kepler's laws (third law):\n\nThe ratio between the T*T and a*a*a is a constant for our Sun and it applies to all objects rotating around it. where T is the period and a is the average distance. \nSo:\nT2=T1*(a2/a1)^(3/2) ;  ^ is used for power \nT2=1year *[  (4.5*10^9)  /  (1.5*10^9)  ]^(3/2)\nT2=164.3 years     \nTo make sure...see the links
559917
First, the speed of the rotation of the earth relative to where you are on the earth.  At the equator, the circumference of the Earth is roughly 24000 miles.  This is convenient, because the Earth rotates about its axis once every 24 hours.  Therefore an hour = 1000 miles of equatorial rotation.  Understand the fastest moving part of the Earth is the equator, since an object on the equator travels 24000 around the earth's Axis every day.  If you are closer to the poles, you are on a "thinner" slice of the earth, where the circumferene may only be 20000miles.  In that case you are moving at 833 miles per hour.  The fact that the Earth moves faster at the Equator than at the poles is responsible for the Coriolus Effect which is really important to people who study meteorology, or who wonder why their toilets get all swirly when flushed.  Why we don't "feel" the rotation is, simply put, because we are rotating exactly the same way as the earth.  In physics, this is called a "frame of reference".  For most intents and purposes, the earth is at "rest" relative to us.  As a human, you make up part of the mass of the earth, and you spin with it in a constant rotation.  It's only when we look to things that are not directly connected to the earth that we really see the effects of it's rotation (ie Tides of water, moments of clouds and weather, etc. . .)  Hope that helps.
919666
The distance to the sun is 150 million km. So the circumference is 940 million km. The earth takes a year to do it, or 31.6 million seconds. Therefore the average speed is 29.8 km/sec  or 107200 km/hour or 66600 miles/hour.
1018691
about 1000 mph.\n\napprox #'s here--earth is 25,000 miles in circuvfrence, 24 hours per day.   this is at equator.\n\ni am thinking, the farther away from equator, the speed can be progressivly slower.
975517
Every time zone is 1 hour apart\nbecause the earth is round
237709
Saturn travels at an average speed of 21,637 miles per hour or 34,821 kilometers per hour in its orbit around the sun therefore orbiting around the sun once every 29.4 Earth years, or once every 10,755.7 Earth days.