what is the rate of vertical precesion of earth's orbit ?
141659
The term vertical precession is not accurate.  Precession is the slow movement of the Earth's axis of rotation in a circle about the ecliptic pole but not in a vertical direction.  \n\nWith respect to the observer the shift is roughly 1 degree every 180 years or 20 arcseconds a year.\n\nAlso quantum mechanics has nothing to do with the precession.  Just celestial mechanical concepts.
63465
For one thing, it takes the earth 24 hours to complete one full rotation, and the earth has circumference of roughly 24,000 miles, which means the speed of its rotation is appx. 1000 mph...\n\nSo if we did not have a protective atmosphere as we do, winds could be up to 1000 mph. Fortunately we do, so the winds we do experience are usually negligible...
407005
I'd say 17000-19000 miles per hour.\n\nIts at a inclined geo-stationary orbit probably.
195801
Angular velocity (w) of earth is:\n\nw=2*pi radians / 24 hours  \n\nconvert this so it is in terms of seconds for compatability with SI units.\n\nw=2*pi/ 24 hours * 24 hours/ 86400seconds \n\nw=7.2722E-5 rads/s\n\nThe lateral acceleration due to the angular velocity must be exactly eaqual to acceleration do to gravity to maintain orbit.\n\nLateral acelleration due to velocity is:\na= (V^2) / r \n\nRelate velocity and angular velocity with:\nV= w*r\n\nSubstituting for V inthe first equation gives:\n\na = w^2 * r \n\n(this is the lateral acceleration towards earth's center due to the angular velocity)\n\nNext we need the acceleration toward earth's center due to gravity.\n\na = G * Mass of Earth / r^2\n\nSince both equations have 'a' on the left side we know they are equal, so we now have\n\nw^2 * r = G * Mass of Earth / r^2\n\nNow Solvling for 'r'\n\nr=[ G * Mass of Earth / w^2 ]^(1/3)\n\nPlug-in known quantities\nG=6.67E-11 \nMass of Earth = 5.9742E24\nw=7.2722E-5\n\nr=4.224E7 m\n\nTo get the hieght above earth's surface we subtract the radius of Earth.\n\nh = 4.224E7 m - 6378100 m = 3.586E7 m\n\nh = 35,586 km
558842
The rotation of the Earth on it's axis does not vary, but the speed of orbit about the sun does, to a tiny degree.  Earth is slightly closer to the sun in the winter months, thus orbits slight faster (and I mean infinitesimally faster).\nAs far as speed- Earth is about 25,000 miles in circumference, if orbits exactly once a day (24 hours) to the speed is a little over 1,000 miles an hour.\nEarth is 93 million miles from the sun, on average-this means the total orbital distance is 93 million X 2 X 3.14 = 584 million miles.  It goes this far in exactly 1 year-364.8 day or (364.8 X 24) 8733 hours. So, 584 million/8733 = about 66,500 miles/hour.  I just checked online and it says about 65,000, so there ya go
864302
I'll assume it is your typical physics problem, which states some highly simplified conditions to demonstrate some physics principal and not a real engineering or natural science problem. We will assume the Earth increases its radius by 30 meters without any change in total mass, and that the Earth is a sphere of uniform density. In that case, the rotation rate would be proportional to the change in the moment of inertia of the Earth, I. For a uniform sphere I=2/5MR^2. You need to calculate the existing I and the new I after the radius change. Since M does not change, and we want only the ratio of the two Is, we can ignore the 2/5M and just compare radius. The radius of the Earth is about 6,370km or 6,370,000 meters. Adding  30 meters makes it 6,370,030 meters and the ratio of 6,730,030^2/6,730,000^2 is about 1.00001. That is about a 0.001% change, and about 0.001% of 24 hours is about 0.8 seconds. \n\nAs an angular momentum problem it is neat, but as a real life Earth problem it is totally bogus. There are all sorts of complications, like the sea only covers 70% of the Earth, the density of water is less than the average density of the Earth, the ice that melted started out far above sea level in many cases, and so on.
655853
Precession! The shape of Earth’s orbit becomes more or less oval (eccentricity), Earth wobbles as it spins (precession), and Earth's axis changes too (tilt). All these changes, over thousands of years, causes Earth's climate to change.
476223
The Earth rotates once in 24 hours, and its (equatorial) radius is 3,963 miles (6,378 km). As with the Moon, the rotational speed starts at zero at either geographic pole and increases as you head toward the equator, where it reaches its maximum of about 1038 mi/hr (1669 km/hr). At 45 degrees north or south latitude, the rotational speed is about 0.7 of this maximum speed.
465183
Earth's speed changes from time to time.  The average is 29.783 kilometers/second or 107,218 kilometers/hour.
693642
The orbital velocity of the satellite depends on its altitude above Earth. The nearer Earth, the faster the required orbital velocity. At an altitude of 124 miles (200 kilometers), the required orbital velocity is just over 17,000 mph (about 27,400 kph). To maintain an orbit that is 22,223 miles (35,786 km) above Earth, the satellite must orbit at a speed of about 7,000 mph (11,300 kph). That orbital speed and distance permits the satellite to make one revolution in 24 hours. Since Earth also rotates once in 24 hours, a satellite at 22,223 miles altitude stays in a fixed position relative to a point on Earth's surface. Because the satellite stays right over the same spot all the time, this kind of orbit is called "geostationary." Geostationary orbits are ideal for weather satellites and communications satellites. \n\nIn general, the higher the orbit, the longer the satellite can stay in orbit. At lower altitudes, a satellite runs into traces of Earth's atmosphere, which creates drag. The drag causes the orbit to decay until the satellite falls back into the atmosphere and burns up. At higher altitudes, where the vacuum of space is nearly complete, there is almost no drag and a satellite can stay in orbit for centuries (take the moon as an example). \n\nSatellites usually start out in an orbit that is elliptical. The ground control station controls small onboard rocket motors to provide correction. The goal is to get the orbit as circular as possible. By firing a rocket when the orbit is at the apogee of its orbit (its most distant point from Earth), and applying thrust in the direction of the flight path, the perigee (lowest point from Earth) moves further out. The result is a more circular orbit
199932
The earth's rotation.
122582
What is the speed of the Earth's rotation?\n\n--------------------------------------------------------------------------------\n\n\nAt the equator, the circumference of the Earth is 40,070 kilometers, and the day is 24 hours long so the speed is 1670 kilometers/hour ( 1070 miles/hr). This decreases by the cosine of your latitude so that at a latitude of 45 degrees, cos(45) = .707 and the speed is .707 x 1670 = 1180 kilometers/hr. You can use this formula to find the speed of rotation at any latitude.
215475
The Earth is rotating around an axis (called its rotational axis). Some objects rotate about a horizontal axis, like a rolling log. Some objects, such as a skater, rotate about a vertical axis. The Earth's axis is tipped over about 23.5° from vertical.\n\nHow do we define up and down in space? What would "vertical" mean? For the Earth, we can think of vertical as straight up and down with respect to the plane in which the Earth orbits the Sun (called the ecliptic).\n\nEarth's rotational axis points in the same direction relative to the stars, so that the North Pole points towards the star Polaris. Think of the Earth as a spinning top, tipped over to one side. Over very long time periods (thousands of years) the direction of Earth's axis slowly changes due to precession.\n\nThe Earth rotates around once in 24 hours - that's a rate of 1000 miles per hour!. The time it takes for the Earth to rotate completely around once is what we call a day. It's Earth's rotation that gives us night and day.\n\nThe combined effect of the Earth's tilt and its orbital motion result in the seasons
541450
The diameter of the Earth's orbit around the Sun is about 300,000,000 kilometers
1029696
0,000694rpm -> considering that the Earth rotates in 24 hours\n0,000696rpm -> considering that the Earth rotates in 23h and 56 minutes (which is the real time in which the Earth makes 1 revolution)
53782
The Earth rotates on its axis at 1000 miles per hour (1600 kph). It orbits around the Sun at an average speed of around 67,250 miles per hour (107,600 kph). The Sun, in turn, is orbiting around the centre of the galaxy at a speed of 540,000 miles per hour. So the combined speed through space of the Earth and the Sun is 607,250 miles per hour. But there´s more - our Galaxy is also hurtling through space at a speed of 360,000 miles per hour. The combined motion of the Earth, Sun and Galaxy means that we are about twenty three and a quarter million miles away from where we were in space this time yesterday.\n\n  The Solar Sytem is believed to be about 4.5 billion years old but it's constituent parts were undoubtedly moving even before that. It is predicted\nthat our Milky Way galaxy will collide with the Andromeda galaxy in, roughly, 5 billion years.
471913
The daily path of an object on the celestial sphere, including the possible part below the horizon, has a length proportional to the cosine of the declination. Thus the speed of the diurnal motion of a celestial object is this cosine times 15 °/hr = 15'/min = 15"/s, i.e. (compare angular diameter):\n\nup to a Sun or Moon diameter every two minutes \nca. four seconds for the largest planet \n2000 diameters of the largest stars per second