Physics (Science & Mathematics) - January 2007

Suppose two black holes were on a collision course with each other. As they get closer, their combined gravitational force causes them to accelerate. As they accelerate, due to relativity, their mass increases, as their masses increase, their gravitational force increases (right?) As their gravitational force increases, they accelerate more. So, could they eventually get to the speed of light?

Their mass would then be infinite, so it would take an infinite force to accelerate them, but their mass being infinite, their gravity would also be infinite, causing the force accelerating them to be infinite as well...

2007-01-25 04:17:00 · 6 answers · asked by Anonymous

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what happens if two sounds of same frequencies combine?

2007-01-25 04:15:18 · 8 answers · asked by sVeen 2

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when light rays pass through each other (in air)do they bend?

2007-01-25 04:09:55 · 4 answers · asked by mark s 1

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Why doesn't the duck's quack echo?????

2007-01-25 04:09:01 · 4 answers · asked by X 3

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When you get stuck during research?

HI. I'm doing research right now using MRI. The problem is I'm stuck. I'm very very stuck and don't know how to continue. I'm not managing to do the same as the articles I've read. And yes I have e-mailed the authours but get no response. I've emailed tons of people asking for help. But I remain very much stuck. I need to do something (called deconvolution) in order to continue. I just don't know how to do it and go further. What do you do when you get stuck in research?

2007-01-25 03:53:16 · 4 answers · asked by Peter R 2

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a charged rod attracted an aluminum can. Can it attract a light plastic can?

2007-01-25 03:38:51 · 4 answers · asked by whoknows 1

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Motion Physics problem?

I'm curious if I'm doing this problem right, and I have a question at the end of it too.

Time (sec)/ Position (meters)
0s/0.0m
1s/3.1m
2s/6.3m
3s/9.3m
4s/12.2m
5s/15.5m
6s/18.5m

a) It asks me to mark it all on a graph paper which I did, and then asked "What do you notice about the spacing of positions? I put "The spacing stays relativly the 3m for each second. It then asks why. Im not sure what a good answer here would be but I put that I think it is because the object that is in motion is set to go a constant speed. I dont think thats a good answer though, does anyone know something better?

b) I then have to calculate the speed of the object at each intervals, I used average velocity and got:
0-1s: 3.1m/s
1-2s: 3.2m/s
2-3s: 3.0m/s
3-4s: 2.9m/s
4-5s: 3.3m/s
5-6s: 3.0m/s

Do those look correct to everyone?

c) It says to plot a function of time and to draw a best-fit line through the points..how do I draw a best-fit line? It says not to connect the dots

2007-01-25 03:35:24 · 1 answers · asked by Erin C 1

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A negatively charged rod is brought near a small conducticg piece of aluminum foil.?

Does the rod exert a force on the foil?

2007-01-25 03:25:44 · 4 answers · asked by whoknows 1

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How can we accumulate more matter than we had to start with?

If I bring 6 bags of groceries into my house, they may take up about 3 square feet, but after consumtion I have 4 square feet of trash. Then multiply that times the amount of airspace which is used for trash in landfills (dumps), why does it increase so substantially? (sp?)

2007-01-25 03:19:25 · 2 answers · asked by Wood Smoke ~ Free2Bme! 6

Physics - January 2007