Physics - December 2006

2006-12-24 01:54:08 · 12 answers · asked by Monk_man 1

2006-12-24 01:27:58 · 3 answers · asked by hughr k 2

There was an article in the Reader's Digest describing how a Swiss couple provided light in a remote village in the Himalayas by gifting them LCD lights, a 12 volt battery and a bicycle generator

2006-12-24 01:01:10 · 5 answers · asked by braghunath 1

i want to know:
1- what is magnetic field?
2- how magnetic field get high?
3- what the causes of high magnetic field?
4- whats the effects of being exposed to high magnetic field? (i want at least 5 effects)
i want long and full and best answer plz and dont late plz i need it after 1 day

2006-12-24 00:31:27 · 4 answers · asked by sara f 1

Must have been tough to get jelly stains off the ceiling.

2006-12-23 23:49:06 · 12 answers · asked by Anonymous

2006-12-23 23:12:36 · 6 answers · asked by Anonymous

2006-12-23 22:48:23 · 6 answers · asked by einstein 1

2006-12-23 22:40:10 · 9 answers · asked by einstein 1

What happens to objects if they get to a place in the universe where the temperature is -450º Farenheit or even below that?

2006-12-23 22:17:13 · 2 answers · asked by Anonymous

IN electic generator is connected to a factory by 2 wires of length 1 km each. The p.d. at generator is 230v and at the factory is 220v.THEcurrent intenisty in the wires is 50A. IF the resestivity of the material of the wire is (1.57 * 10 ^ -6)ohmcm.FIND the resistanceer meter of the wire and its radius.

2006-12-23 20:30:46 · 2 answers · asked by Anonymous

I like this question. Nobody knows the answer but me.

2006-12-23 19:39:46 · 11 answers · asked by wwwwwwwfe 1

Here's a question I have trouble wrapping my mind around:

A person riding some futuristic speedy train pulls a Colt 1911 and fires a round from the rear of the caboose (exact opposite direction the train is traveling). If the train was traveling at a velocity of 750 feet per second and the projectile from the handgun was also traveling 750 fps, to the stationary observer standing by the tracks, would the bullet appear to simply emerge from the barrel and fall directly to the ground?

I try to simplify this by applying the same idea to lower velocities. I try to figure what a baseball would do if a person threw one from the rear of a modern Amtrak at 40 MPH when the locomotive was ALSO traveling at 40 MPH at the time. Still, I cannot figure what would appear to happen to the ball to the stationary track-side observer.... it hurts my brain!

Any ideas?

2006-12-23 19:09:00 · 6 answers · asked by Snowdog 2

2006-12-23 18:35:43 · 8 answers · asked by Anonymous

2006-12-23 17:52:10 · 17 answers · asked by candygrl_14s 2

When I look through a metal screen on a box screened on four sides the opposite wall appears magnified greatly. This also happens through one chain link fence with another beyond (the second fence is magnified).

2006-12-23 16:14:38 · 3 answers · asked by tiredlazydog65 1

Yes. Mostly correct. Resistance/impedance basically same. He might get best answer. But - Nobody actually checked their answers with a multimeter. Come on, be truthful. What was the difference between your algebraic answer(we all know ohm's law) and the reading on your meter?? And why? I want to know. This is not a silly trick question. I am a qualified man and would really like an answer to this before I kick the bucket. Oh, and yes, thanks to the answerer(there's a new word for you!) who reminded me about the temp. difference. Please come back to me on this one. I have really enjoyed your input - it is nice to talk to intelligent people.

2006-12-23 16:05:12 · 11 answers · asked by Anonymous

2006-12-23 15:35:28 · 16 answers · asked by a a 1

2006-12-23 15:26:04 · 19 answers · asked by Anonymous

I asked a question earlier about lamp resistance. There were some respectable answers. But.... Work it out again - lamp (bulb) 240v 100w. Resistance in ohms = ? Then get your multimeter out and set it to whatever to read the resistance - and DOES IT AGREE WITH YOUR ALGEBRAIC ANSWER?

2006-12-23 15:10:54 · 8 answers · asked by Anonymous

2006-12-23 14:11:16 · 2 answers · asked by jcnman 1

I like this question. Nobody knows the answer but me.

2006-12-23 14:00:24 · 16 answers · asked by wwwwwwwfe 1

Four point charges are placed at the corners of a square. Each side of the square has length 2 m. Determine the magnitude of the electric field at the point P (center of the square)?
A) 2 * 10^-6 N/C
B) 3 * 10^-6 N/C
C) 9 * 10 ^3 N/C
D) 1.8 * 10^4 N/C
E) 2.7*10^4 N/C

What is the magnitude of the electric field due to a 4 * 10 ^-6 C charge at a point 0.08 m away?
A) 1800 N/C
B) 1 *10^5 N/C
C) 5.63 *10^6 N/C
D) 9 * 10^4 N/C
E) 3.6 * 10^6 N/C

*Help, I need to know this for the exam review!

2006-12-23 13:00:46 · 3 answers · asked by Anonymous

Again I am asking a physics question and I would like some help. do NOT give me the answer...only clues in which to find it such as formulas.

Five forces act on an object:
1) 60N at 90
2) 40N at 0
3) 80 N at 270
4) 40N at 180
and 5) 50N at 60
what are the magnitude and direction of a sixth force that would produce equilibrium?
I understand that when you have three forces they can create a triangle, so can you do it with this problem yet have two triangles instead of one? I am going to keep trying to figure this out...and please no answers.
Thank you for your help.

2006-12-23 12:00:28 · 4 answers · asked by Kurious_Kat 3

2006-12-23 11:57:00 · 2 answers · asked by Yea Yea 4

Why or why not.

2006-12-23 11:50:19 · 18 answers · asked by Anonymous

I know how turbines work, but I cant work out why the sails of those huge wind turbines are always moving 1) at the same speed, and 2) even on days when there is no wind. How is the wind even strong enough to cause the blades to move?

2006-12-23 10:48:46 · 11 answers · asked by Chartlotte M 2

Where would you like to travel? To the future, past? Precise when and why.

2006-12-23 10:33:21 · 14 answers · asked by ladysorrow 7

2006-12-23 10:10:36 · 3 answers · asked by Spencer B 2

and you leave an airport which is on the equator and is 4200 miles from your destination on the same lateral line and it takes you 4 hours to get there(flying towards the rotation), if you are looking from outer space, do you land in the same place as you started from???

2006-12-23 09:55:39 · 18 answers · asked by granty 1

I need some help with this problem.
A 215-N box is placed on an inclined plane that makes a 35.0 degree angle with the horizontal. Find the component of the wieght force paralel to the plane's surface.

How do I find it? a clue to which equation I use? and why would the weight force be paralell to the plane's surface?

And note:
I am only looking for help inorder to understand the question more clearly...Do Not Give me the answer!!!

2006-12-23 09:47:42 · 4 answers · asked by Kurious_Kat 3