Physics - December 2007

If the mass of a light particle can be known, does that mass vary with the wave length?

2007-12-29 19:23:14 · 4 answers · asked by Swamp Fox 1

2007-12-29 18:35:27 · 5 answers · asked by indiegirl 4

Everything else is the same. 40 degrees and 50 degrees. Which one would launch a motorcycle farther?

2007-12-29 16:36:03 · 7 answers · asked by Anonymous

2007-12-29 15:38:21 · 6 answers · asked by Chicken Little 3

A(n) 646 kg elevator starts from rest. It moves
upward for 3.41 s with a constant acceleration
until it reaches its cruising speed of 1.86 m/s.
The acceleration of gravity is 9.8 m/s^2
Find the average power delivered by the
elevator motor during this period. Answer in
units of kW.

and

Wayne pulls a 407 N sled along a snowy path
using a rope that makes a 37 degree angle with the
ground. Wayne pulls with a force of 81.7 N.
The sled moves 26.1 m in 2.3 s.
What is Wayne's power? Answer in units
of W.

I got 5.887644 kW for the first question, and 709.6280791 W for the second question, but both were wrong.
Could someone help me with these two questions? i would like work and an answer please, thanks :)

2007-12-29 15:38:13 · 3 answers · asked by thundershock375 2

2007-12-29 15:09:52 · 8 answers · asked by Anonymous

2007-12-29 14:14:10 · 4 answers · asked by LG 7

Is it meters or centimeters?

2007-12-29 12:34:39 · 11 answers · asked by Anonymous

Antimatter and matter annihilate each other?
Also can a positron be used to intiate fussion in hydrgen.
Also is this true virtual particals and anti virtual particals hold the same charge and do they annihilate each other?

2007-12-29 11:39:11 · 7 answers · asked by Anonymous

A.Angstrom
B.lux
C.lumen
D.candela

2007-12-29 10:58:13 · 4 answers · asked by Nichole A 3

Will it someday be possible to step on this thing, the thing scans you and you will teleport to a different location in the world? I think I seen this on Discovery channel or something and wondering if this will ever be possible?

2007-12-29 10:40:37 · 4 answers · asked by Nazarius 2

Colour is caused by the reflection of light, inside a blob of custard there is no light. Is it therefore black inside the blob?

2007-12-29 09:18:58 · 8 answers · asked by Me 5

Incandescent floods produce about produce about 750 lumens. Please be specific about brand and web site.

2007-12-29 07:42:32 · 3 answers · asked by Janet H 2

I have a question about black holes and i think it makes since but don't know how to ask about it without my theory getting stolen. The way I figure it if I can ask someone about it if they couldn't disprove my theory that would be cool but if they could then I'd have an answer to my question so its a win win.

2007-12-29 07:08:29 · 11 answers · asked by romanlegionary 2

what is it exactly?and has there been records of it happening?

2007-12-29 06:49:35 · 16 answers · asked by Anonymous

What Makes Up An Atom?
What Makes Up The Thing That Makes Up An Atom?
What The The Thing That Makes Up The Thing That Makes Up An Atom?

Etc Etc

How Far Can You Guys Go?
I Would Love To Know.

2007-12-29 06:40:40 · 7 answers · asked by gdc3.rocks 3

Is it a complete theory yet? Or just a conceptual idea of uniting all the branches of string theory with supergravity ect..
Does M- theory claim that the universe started as a collision of 2 d- branes? If so, where did the branes come from in the first place? What gave them movement?

2007-12-29 06:38:05 · 4 answers · asked by Anonymous

2007-12-29 06:36:05 · 3 answers · asked by mustafa e 1

2007-12-29 06:27:57 · 7 answers · asked by Anonymous

2007-12-29 06:20:01 · 6 answers · asked by kailking 1

2007-12-29 05:25:01 · 7 answers · asked by Perpetua 2

2007-12-29 05:22:05 · 8 answers · asked by Shellshock 2

The FEMA B-pad report explained the squibs in the collapse of the twin towers by using the physics of a pancake collapse. Later the NIST report claimed that FEMA had been wrong, and in fact it was a pile driver collapse that brought down the twin towers. This changes the physics of the collapse. Then later in there report, NIST addressed the squibs by simple referring you to the FEMA report. This seems to be inconsistent of rational logic
I am not positive about the details thus I am seeking those who better understand.

2007-12-29 05:20:09 · 4 answers · asked by WA 9/11 Investigators 2

if yes please say how?

2007-12-29 04:40:53 · 13 answers · asked by Anonymous

Watched a movie last night "What the Bleep Do We Know?"
Very interesting, to say the least.
What are your thoughts?
Would love to hear from someone with serious insight.
Thanks in advance

Oh, almost forgot one more question...how does quantum physics differ from metaphysics?

2007-12-29 04:38:59 · 5 answers · asked by Peace! Lotus Flower 5

Use Newton's Laws.

2007-12-29 04:16:15 · 4 answers · asked by Sarah 1

possible to use the tools of that century to fabricate more advanced technology to launch a primitive sattelite into orbit with his knowledge of the future and human ingenuity and a whole lot of hard work?

2007-12-29 03:53:25 · 6 answers · asked by Anonymous

does it have a center ?

2007-12-29 03:29:40 · 7 answers · asked by Anonymous

if u answer within like 10min u will get the 10 points

2007-12-29 03:18:10 · 7 answers · asked by sk8er 3

If you follow space news, you sometimes hear where an object (space probe or maybe an asteroid) passes a planet. Sometimes it is said that the passing object speeds up and is flung out. Other times, it is slowed down by the encounter and may even end up captured by it. In laymans terms, when could an object be expected to speed up and when could it be expected to slow down?

2007-12-29 03:02:38 · 5 answers · asked by Dave C 3