The North Pole, also known as the Geographic North Pole or Terrestrial North Pole, is the point in the Northern Hemisphere where the Earth's axis of rotation meets its surface. It is called the True North Pole to distinguish from the Magnetic North Pole.
The North Pole is the northernmost point on the Earth, lying diametrically opposite the South Pole. It defines geodetic latitude 90° North, as well as the direction of true north. At the North Pole all directions point south; all lines of longitude converge there, so its longitude can be defined as any degree value. Along tight latitude circles, counterclockwise is east and clockwise is west. The North Pole is at the center of the Northern Hemisphere. The nearest land is usually said to be Kaffeklubben Island, off the northern coast of Greenland about 700 km (430 mi) away, though some perhaps semi-permanent gravel banks lie slightly closer. The nearest permanently inhabited place is Alert in the Qikiqtaaluk Region, Nunavut, Canada, which is located 817 km (508 mi) from the Pole.
While the South Pole lies on a continental land mass, the North Pole is located in the middle of the Arctic Ocean amid waters that are almost permanently covered with constantly shifting sea ice. The sea depth at the North Pole has been measured at 4,261 m (13,980 ft) by the Russian Mir submersible in 2007 and at 4,087 m (13,409 ft) by USS Nautilus in 1958. This makes it impractical to construct a permanent station at the North Pole (unlike the South Pole). However, the Soviet Union, and later Russia, constructed a number of manned drifting stations on a generally annual basis since 1937, some of which have passed over or very close to the Pole. Since 2002, the Russians have also annually established a base, Barneo, close to the Pole. This operates for a few weeks during early spring. Studies in the 2000s predicted that the North Pole may become seasonally ice-free because of Arctic ice shrinkage, with timescales varying from 2016 to the late 21st century or later.
Attempts to reach the North Pole began in the late 19th century, with the record for "Farthest North" being surpassed on numerous occasions. The first undisputed expedition to reach the North Pole was that of the airship Norge, which overflew the area in 1926 with 16 men on board, including expedition leader Roald Amundsen. Three prior expeditions – led by Frederick Cook (1908, land), Robert Peary (1909, land) and Richard E. Byrd (1926, aerial) – were once also accepted as having reached the Pole. However, in each case later analysis of expedition data has cast doubt upon the accuracy of their claims.
If you have a pole, short or long, and you push it, doesn't the opposite end of the pole begin to move faster than the time the speed of light would take to travel the distance of the pole?
Assuming there is very little (none if possible?) compression in the pole, and it was floating in...
Q. A street light is mounted at the top of a 15-ft tall pole. A man 6 ft walks awsay from the pole with a speed of 5ft/s along a straight path.How fast is the tip of his shadow moving when he is 40 ft from the pole?
What I've done so far:
this scenario can be drawn as similar triangles. from...
I havn't seen this posted here, but its a nice picture of ice on mars.
http://www.esa.int/SPECIALS/Mars_Express/SEMGKA808BE_0.html
Is this the result of a comet hitting Mars and depositing the ice?
A ball of mass m is fastened at the end of a flagpole connected to the side of a tall building at point P. The length of the flagpole is l and \theta is the angle the flagpole makes with the horizontal. The ball becomes loose and starts to fall. What is the angular momentum of the ball about...
hey there, idunno if this has been discussed before.
there were a lot of articles abt a minor change in the tilt of the Earth's axis
becoz of the tsunami , does tht mean our pole star have also changed ?
any other noticeable effects of this ??
than x
vinee..
Before jumping into my post, allow me to give a bit of background. I was a vaulter for the 91-92 Arkansas Razorbacks (2 of the 38 National Championship years - and no they did'nt need me to win). Presently, I help a couple of high school vaulters.
I would like to have a discussion about...
Im just trying to write a small introduction for my lab report due in on friday and while i have an idea in my head what it is, i just can't put in into words
A 3.3m long pole is balanced vertically on its tip. It is given a tiny push. What will be the speed of the upper end of the pole just before it hits the ground? Assume the lower end does not slip.
mgh=.5mv^2 + .5Iw^2 Initial PE = final KE translation + final KE rotational
v=rw, I=.33mr^2...
A tether ball of mass 0.15 kg is attached to a vertical pole by a cord 1.1 m long. Assume the cord attaches to the center of the ball. If the cord makes an angle of 20° with the vertical, then
a) What is the tension in the cord?
b) What is the speed of the ball?
Ok well i started it. On...
Say the pole is 10 metres long. I run really fast into a barn that is 15 metres long.
Say I run fast enough so that from my point of view the barn shrinks to less than 10 metres long due to length contraction. What happens to the barn now that my pole won't fit?
The other problem is that...
I am trying to find what velocity and angle of launch is required for a projectile to be fired from the North pole and land somewhere on the equator. I was thinking 45 degrees with muzzle velocity 9401m/s but that sounds ridiculous. Also how much time would it be in the air for?
I am trying to find what velocity and angle of launch is required for a projectile to be fired from the North pole and land somewhere on the equator. I was thinking 45 degrees with muzzle velocity 9401m/s but that sounds ridiculous. Also how much time would it be in the air for?
A physics experiment with magnets and a vote pole-results
This is an experiment with magnets in motion.
The question is that if one magnet is spinning along a circular plane such that
the north end arrives at a point on the circle just as often as the south end, then what will happen if...