Physics - August 2007

I often see the letter "s" especially in hairs or cotton stuck to peoples clothes. I wondered if it was due to magnetic or static fields.

2007-08-01 19:45:41 · 7 answers · asked by John M 1

A 28 turn circular coil of radius 3.00 cm and resistance 1.00 is placed in a magnetic field directed perpendicular to the plane of the coil. The magnitude of the magnetic field varies in time according to the expression B = 0.0050t + 0.0380t^2, where t is in seconds and B is in tesla. Calculate the induced emf in the coil at t = 4.20 s.

2007-08-01 19:03:23 · 1 answers · asked by dwa9@sbcglobal.net 1

mind over matter? pure energy traveling through astral planes upon death? dimension hopping? portal? humanitys last evolution beyond a physical body? it makes cence

2007-08-01 18:49:17 · 12 answers · asked by john constantine 2

2007-08-01 18:41:18 · 4 answers · asked by Anonymous

Write the equation that shows how radium 226 decays to give off an alpha particle and another element.

2007-08-01 17:34:26 · 2 answers · asked by MizzKin 1

what majors in college - physics I assume and then what next?!?!?!

2007-08-01 16:54:20 · 5 answers · asked by Anonymous

2007-08-01 15:57:40 · 2 answers · asked by vj822 1

2007-08-01 15:22:04 · 4 answers · asked by Anonymous

I need to know how to convert units in to Newtons without the aid of computer or electronic device. In other words can you show me how to convert the following units to Newtons written and not a website were it will convert it for me. Kg, g, and l. Here is an example: 15.0kg to N

2007-08-01 15:03:48 · 3 answers · asked by ~~052702~~ 3

My mom and I are betting (say orbit plz)

2007-08-01 14:21:57 · 12 answers · asked by Anonymous

This is NOT conspiracy theory, but actual unedited live video
from the TV news. See for yourself... and explain what caused
all the short but very bright flashes of light appearing around
the WTC tower buildings as they collapsed... give sensible
explanations for these very bright flashes of light, and for God's
sake, don't say it was from the jet fuel fire!!!

Watch these unedited close-up videos
of short but very bright flashes going off
before and during the collapses, and
not the horizontal explosions shooting
out of the buildings at floors well below
the collapsing levels (which are
supposedly "pancaking" into each other
above)...

Concrete cannot become pulverised
into fine dust without the aid of high
energy explosives! Strength = 27-42
MPa, or typically 4000 psi tensile
strength, stronger than most plastics!

Explain all the concrete powder and why
there were NO solid pancaked concrete floors
sitting one on top of each other at ground
zero. Nothing!

2007-08-01 13:53:12 · 5 answers · asked by Anonymous

2007-08-01 13:34:17 · 6 answers · asked by Yaasi 3

I know from GR that energy produce space-time curvature. In quntum mechanics, the energy is quantized. Is the space-time quantized as well at the quantum mechanical level?

2007-08-01 12:53:47 · 2 answers · asked by BenL 2

2007-08-01 12:46:40 · 10 answers · asked by Clean Independent Energy 3

2007-08-01 12:32:26 · 1 answers · asked by BenL 2

The shadow of an office building reaches across the street to a sidewalk 60 feet away when the angle of elevation for the sun is 72 degrees. approxametly how tall is the buliding?

A. 19.5 ft
B. 57 ft
C. 125 ft
D. 185 ft

2007-08-01 11:59:21 · 5 answers · asked by sdp 1

Determine
a) gravitational field strength
b) how much would 85 kg astranout weigh on the asteroid.

2007-08-01 11:53:28 · 1 answers · asked by Anonymous

2007-08-01 11:36:45 · 11 answers · asked by Alexander 6

Find
a) Total distance skier jumped
b) velocity when she landed

full solution please

2007-08-01 11:05:32 · 2 answers · asked by Anonymous

If you were to see it with the naked eye. I know it sounds impossible... I see colours, auras, feilds, smoke, waves, people have different lights and waves, plants have auras, dead trees have different ones. All I do is sit on my lanw all day and "work." Everything I see looks like, pixels. For lack of a better word I guess. Like, when your tv doesn't come in so clearly or something, or if you were to stare REALLY closely at your computer screen. Yeah, like that
; )
Anyway, just wondering, evidently humans only use 10% of their brains, so what if I use 11%? It'b be like trying to desbribe smell to someone. Go ahead, try it. It's not impossible, just may seem like it. Ok, I'm done now.

2007-08-01 10:57:59 · 5 answers · asked by flaw 2

Hi, i'm having a bit of trouble with a question here. I have a diagram of a beam of light entering a medium with a high refractive index from a lower refractive index medium. The beam however doesn't leave the second medium because of total internal reflection, so it's angle to the normal when it enters the second medium is it's critical angle. The critical angle i have is 41.1 deg, and the refractive index of the second medium is 1.52, and the refractive index of the first medium is 1.33. can anyone give me any hints on how to find the angle to the normal that the beam of light enters the second medium is ?
Thanks.

2007-08-01 10:21:05 · 1 answers · asked by David M 1

If given 1 square foot of foil, how do you best form the foil into a boat-like shape that will hold the most weight in it's hall when placed in water?

http://www97.intel.com/en/ProjectDesign/UnitPlanIndex/FloatThatBoat/boat_foil.htm
http://www.new-sng.com/foilboat.cfm
http://pbskids.org/zoom/activities/sci/boatsafloat.html

2007-08-01 10:12:20 · 5 answers · asked by Bat Dog 4

Can you magnetize a Mobius Strip? Where are the poles?

2007-08-01 10:07:04 · 2 answers · asked by p_ne_np 3

If a passenger drops golf ball and ping-pong ball from the same heigh, which ball will fall further from the passneger?

The ping-pong ball will fall slower, of course, due to air drag.

2007-08-01 10:02:31 · 4 answers · asked by Alexander 6

2007-08-01 10:01:32 · 7 answers · asked by Anonymous

I believe that it is completely possible to travel faster than the speed of light.. in theory.
But the question I pose is what happens when the vessel breaks the "light barrier"? Would it be something in comparison to a fighter jet making a sonic boom when it breaks the sound barrier?

2007-08-01 10:00:35 · 6 answers · asked by ehad46 2

ps. what happens when you use a stun gun under water?

2007-08-01 09:26:30 · 5 answers · asked by Anonymous

The unit describing the frequency of a wave is the _____?

2007-08-01 08:57:33 · 9 answers · asked by Anonymous

Ψ(bar, sub 0) = √(m/π)*e^(-2α(xbarsubi)² + A)


please list all your steps you can find the problem on page 107 of stephen hawkings the universe in a nutshell (thanx daniel g for getting me the full equation btw)

2007-08-01 08:03:04 · 4 answers · asked by william65132005 1

2007-08-01 07:47:35 · 8 answers · asked by peter g 1