Pole Definition and 372 Threads

A firefighter with a weight of 712 N slides down a vertical pole with an acceleration of 3.00 m/s^2, directed downward. What are the magnitudes and directions of the vertical forces (a) on the firefighter from the pole and (b) on the pole from the firefighter?? I think the magnitudes would be...

I hope some of you will be able to help me. First, let me make sure I have this right. From what I understand, the five Pole Stars are: Polaris Al Deramin Deneb Vega Thuban My question is, what was the Pole Star between 9,000 BC and 10,000 BC? The length of time for each Pole Star...

Here I must evaluate \frac{1}{2\pi i}\int_C \frac{f(\zeta)}{w(\zeta)}\frac{w(\zeta)-w(z)}{\zeta -z}d\zeta where f is holomorphic on the hole complex plane, where w(z) is a polynomial of degree n with all of its zeroes distinct (i.e. all n have multiplicity 1), and where C is a closed curve...

I want you to help me settle an arguement. Is it possible to have a center-pole magnet? That is, a magnet with one pole at the center, and the other pole facing out in every direction? I think that it isn't, because the molecules would force each other to all face the same direcion, or all of...

When a bar magnet (one with Npole n the other with S pole) is broken into 2 pieces, wat poles do the pieces have? thanx

a)Compute hte radial accleration of a point at the equator of the earth. b)repeat for the north pole of hte earth. Take the radius of the eartk to be 6370 km. so for a) i got 9.9337 m/s square which is right but for b) the answer is just zero why?

Hi, Does anyone know a straightforward way to calculate a residue at at a pole of non-integer order. I'm trying to find the residue of \frac {e^{ipx}}{(p - i \kappa)^\eta} at p = i \kappa where \eta is a positive non-integer. Thanks. I have reason to suspect it's zero, but I'd need...

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?

As the Earth is spinning, how much more would a kg of say, platinum, bought at the equator, weigh at the North pole?

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...

how to locate pole star

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...