Physics - March 2007

We know that space and time are interconnected and that mass curves space-time around it. Is it possible that these distortions in space time send ripples across the universe, possibly through the medium of dark matter. These ripples either resonating or canceling each other out. With an effect that weakly interacts with matter so as not to disrupt it, but still having an effect. And would, under these conditions, objects moving in orbits cause cyclic patterns as the ancients believed was the way time behaved?

2007-03-08 09:53:21 · 2 answers · asked by james h 1

If you stick a metal rod in a snowbank, the end in your hand will soon become cold. Does cold flow from the snow to your hand?

2007-03-08 09:45:40 · 6 answers · asked by hintzruby 1

2007-03-08 09:45:08 · 2 answers · asked by Anonymous

At what common temperature will both a block of wood and a piece of metal feel neither hot nor cool when you touch them with your hand?

2007-03-08 09:44:25 · 2 answers · asked by hintzruby 1

a.) 60 x 24
b.) 60 x 60 x 24
c.) 60 x 60 x 7
d.) 60 x 60 x 24 x 7

2007-03-08 09:29:09 · 11 answers · asked by Anonymous

If I observed all the safety protocalls, and filled a metal mold with sand, that was connected between a lightning conducter and earth, would the sand turn to glass in the mold when lightning struck the conductor?

2007-03-08 09:27:29 · 7 answers · asked by Avon 7

2007-03-08 09:26:27 · 5 answers · asked by omakin 1

Does anybody know what is going to happen to yellow haribo gummy bear when you put it to Stanford Linear Particle Accelerator?

I was driving the other day with my friends on 280 and had really interesting discussions about it ...

thanks
jiri

2007-03-08 09:18:52 · 8 answers · asked by Jiri 1

2007-03-08 09:17:28 · 3 answers · asked by Anonymous

Scientific thoughts and answers please.

2007-03-08 08:41:20 · 5 answers · asked by Anonymous

please explain in easy to understand terms!

2007-03-08 08:38:56 · 6 answers · asked by Metus Ocultus 1

What does it do if you live slap bang on the equator?

2007-03-08 08:38:26 · 13 answers · asked by Anonymous

Plz answer this question really important..

2007-03-08 08:31:10 · 14 answers · asked by not_a_geek 1

I await your summary of this reconciliation which I have proven already. Fish or cut bait?

2007-03-08 08:21:04 · 4 answers · asked by Theodore Russell - The American 1

My friends don't believe me.
Any proof would be good :)

2007-03-08 07:59:01 · 5 answers · asked by Starber 1

Science homework.

2007-03-08 07:25:38 · 12 answers · asked by Anonymous

1. can the amount of energy in the universe ever increase?why?

2.pushing a cart down the hall that was initally at rest imcreases its kinetic energy but where did the energy come from?

3.explain an energy transformation that you might use every day?

4.what two types of energy are considered mechanical energy?

5.when a driver presses on the brakes of a car where dose all the energy go?

6.how fast would a 4kg mass have to be going to get to a height of 20 meters?

plz help so confused!

2007-03-08 07:24:38 · 2 answers · asked by Anonymous

String theory, conserning Bosons.

2007-03-08 07:15:01 · 8 answers · asked by CLIVE C 3

can an object have negative acceleration and zero velocity at the same time?

2007-03-08 07:13:59 · 5 answers · asked by Anonymous

Hey,

What's the engineering reasoning behind why sometimes shear stress is neglected if it is significantly smaller than,say, bending stress. So I guess what I am asking is that why does shear stress come out soo small?

like for example, a bike pedal with crank has 300lbs vertical only force applied to it, and made a cut and analyzed it. The bending stress due to bending moment was 50kpsi while shear stress was 1.7 kpsi.

We also made that assumption when I took streghts of materials for many of the cases. I still don't know why it is safe to make that assumption.

Thanks

2007-03-08 07:11:16 · 1 answers · asked by abe_cooldude 1

Say distance meaurements (y) are performed every second:
t= [0 1 2 3 4 5]

say also that the points (t,y) must be fitted with a graph of the form y=t^p. This is because it is known that there is a power relationship and the disance at zero is zero. It is also known that it is a positive increasing function.

I am given one meausrement and am asked to give an intial guess at what the power function may be.

say at t=3 I am told y = 76,

I would guess p = ln(76)/ln(3) = 3.94
so an equation of y=t^3.94
I give the equation to the person doing the measurements and he saids "thanks the equation fitted the points well"

But say his friend does the same measurements but he measures with another scale, say kilometer instead of meter. So he says at t=3, y= 0.076.

Then I guess the equaiton:
y = t^-2.35

But this guy comes back to be angry and says it looks nothing like the points he measured.

What more do I have to know, or what more should I tell them to improve the fit?

2007-03-08 07:07:29 · 3 answers · asked by Medy 1

2007-03-08 07:02:56 · 6 answers · asked by crazyinnc 1

A 54N*s IMPULSE IS EXERTED ON 9.0 KG MASS.

2007-03-08 06:50:02 · 2 answers · asked by Anonymous

A vehicle traveling due east at 3m/sec collides with and sticks to a vehicle having twice the mass that is traveling due west at 2 m/sec. Immediately after the collision, the vehicular combination is moving due west at 1/3 m/sec. The mass of the smaller vehicle is most nearly (kg).
a) 100
b) 250
c) 900
d) 1100
e) 2500
f) 4000
g) 4900
h) 6000
i) No single numerical answer is true for this situation.

2007-03-08 06:42:25 · 4 answers · asked by flaca61680 1

2007-03-08 06:42:15 · 12 answers · asked by Anonymous

I really need help......

2007-03-08 06:39:43 · 3 answers · asked by Anonymous

2007-03-08 06:22:39 · 4 answers · asked by JAMES 4

2007-03-08 06:22:11 · 16 answers · asked by sum.geeza 1

I have read a lot of physics books lately, universe in a nutshell, brief history of time, hyperspace, the constants of nature, the elegant universe, so on... I am looking for a good book about quantum physics minus the mind-blowing mathematical equations, or in otherwords, not a text-book. I haven't yet reached that level in my studies. I just want something that explains the theory and the basis of the math without getting too in-depth.

Thanks guys.

2007-03-08 06:19:49 · 5 answers · asked by Anonymous

I mean when we see the electron or any 2 different materials is it gonna be the same or different. And one more Question is if electron revolves arround the nucleous what lies between the necleous and electron. Is there any medium between them ? Air, vaccum or what is there. there must be some thing . Because science says there is some gap may be a very minute but it is there. So what is there in that gap b/w nucleous and electron of any atom. Can somebody give some idea.

2007-03-08 06:15:46 · 9 answers · asked by Narasimha Raju UK 1