Physics Test Of Knowledge (How Smart Are You?)

Message boards : Cafe SETI : Physics Test Of Knowledge (How Smart Are You?)
Message board moderation

To post messages, you must log in.

AuthorMessage
Profile SilentObserver64
Volunteer tester
Avatar

Send message
Joined: 21 Sep 05
Posts: 139
Credit: 680,037
RAC: 0
United States
Message 242018 - Posted: 4 Feb 2006, 4:52:05 UTC
Last modified: 4 Feb 2006, 5:05:07 UTC

s(t) = s0 + Z j~v(t)jdt ; ~r(t) = ~r0 + Z ~v(t)dt ; ~v(t) = ~v0 + Z ~a(t)dt

HINT: Mechanics

Point-kinetics in a fixed coordinate system

(Posted best I could due to text formatting of SETI)

Let's See Who Can Figure It Out.

Anyone?
ID: 242018 · Report as offensive
Profile kinhull
Volunteer tester
Avatar

Send message
Joined: 3 Oct 03
Posts: 1029
Credit: 636,475
RAC: 0
United Kingdom
Message 242146 - Posted: 4 Feb 2006, 9:36:34 UTC - in response to Message 242018.  

s(t) = s0 + Z j~v(t)jdt ; ~r(t) = ~r0 + Z ~v(t)dt ; ~v(t) = ~v0 + Z ~a(t)dt

HINT: Mechanics

Point-kinetics in a fixed coordinate system

(Posted best I could due to text formatting of SETI)

Let's See Who Can Figure It Out.

Anyone?


Are we talking big bang theory here?

Join TeamACC

Sometimes I think we are alone in the universe, and sometimes I think we are not. In either case the idea is quite staggering.
ID: 242146 · Report as offensive
Profile kinhull
Volunteer tester
Avatar

Send message
Joined: 3 Oct 03
Posts: 1029
Credit: 636,475
RAC: 0
United Kingdom
Message 242157 - Posted: 4 Feb 2006, 10:39:07 UTC - in response to Message 242018.  

s(t) = s0 + Z j~v(t)jdt ; ~r(t) = ~r0 + Z ~v(t)dt ; ~v(t) = ~v0 + Z ~a(t)dt


My second guess is nuclear reactions.

Join TeamACC

Sometimes I think we are alone in the universe, and sometimes I think we are not. In either case the idea is quite staggering.
ID: 242157 · Report as offensive
Profile The Simonator
Avatar

Send message
Joined: 18 Nov 04
Posts: 5700
Credit: 3,855,702
RAC: 50
United Kingdom
Message 242158 - Posted: 4 Feb 2006, 10:46:58 UTC

Essie, where are you?
Heres your big moment, dazzle us :-)
Life on earth is the global equivalent of not storing things in the fridge.
ID: 242158 · Report as offensive
AC
Avatar

Send message
Joined: 22 Jan 05
Posts: 3413
Credit: 119,579
RAC: 0
United States
Message 242172 - Posted: 4 Feb 2006, 11:39:02 UTC

Unless the proper math notations are implemented in the bb code, it'd be difficult to be accurate with formulas like this.

Without being accurate with the notations, I'll go out on a limb and say that s(t) = s0 + Z j~v(t)jdt ; ~r(t) = ~r0 + Z ~v(t)dt ; ~v(t) = ~v0 + Z ~a(t)dt, is derived when r (position) = (x,y,z), v (velocity) = (x,y,z), a (acceleration) = (x,y,z). It's mechanics.

Is that close enough or did I goof?







ID: 242172 · Report as offensive
Profile Es99
Volunteer tester
Avatar

Send message
Joined: 23 Aug 05
Posts: 10874
Credit: 350,402
RAC: 0
Canada
Message 242175 - Posted: 4 Feb 2006, 11:57:34 UTC
Last modified: 4 Feb 2006, 12:00:11 UTC

It's too early in the morning and I not sure about the notation. It just looks like what A/C said to me. Am I missing something?


Reality Internet Personality
ID: 242175 · Report as offensive
Profile NthDegree
Avatar

Send message
Joined: 30 Sep 03
Posts: 3
Credit: 1,127,952
RAC: 0
United States
Message 242316 - Posted: 4 Feb 2006, 16:34:18 UTC

"Collisional redistribution of radiation", would be my guess.
I never said I was committed to sanity. It is the dark places of my mind that I find facinating.

NthDegree
ID: 242316 · Report as offensive
Profile Sleestak
Avatar

Send message
Joined: 22 Jun 01
Posts: 779
Credit: 857,664
RAC: 0
United States
Message 242361 - Posted: 4 Feb 2006, 17:58:34 UTC
Last modified: 4 Feb 2006, 18:00:52 UTC

||.|..|...|....|.....|......|.......|........|.........|..........|...........|

TEAM
LL
ID: 242361 · Report as offensive
Profile SilentObserver64
Volunteer tester
Avatar

Send message
Joined: 21 Sep 05
Posts: 139
Credit: 680,037
RAC: 0
United States
Message 242391 - Posted: 4 Feb 2006, 18:36:48 UTC

The position ~r, the velocity ~v and the acceleration ~a are defined by: ~r = (x; y; z), ~v = (x_ ; y_; z_), ~a = (x; y; z).
ID: 242391 · Report as offensive
Profile SilentObserver64
Volunteer tester
Avatar

Send message
Joined: 21 Sep 05
Posts: 139
Credit: 680,037
RAC: 0
United States
Message 242401 - Posted: 4 Feb 2006, 18:47:22 UTC

Due to the lack of being able to properly post the equations, we might have to close this thread, but was worth a try.
ID: 242401 · Report as offensive
Hans Dorn
Volunteer developer
Volunteer tester
Avatar

Send message
Joined: 3 Apr 99
Posts: 2262
Credit: 26,448,570
RAC: 0
Germany
Message 242493 - Posted: 4 Feb 2006, 20:43:52 UTC - in response to Message 242401.  

Due to the lack of being able to properly post the equations, we might have to close this thread, but was worth a try.


Probably. The answer's 42, BTW :o)


Regards Hans
ID: 242493 · Report as offensive
AC
Avatar

Send message
Joined: 22 Jan 05
Posts: 3413
Credit: 119,579
RAC: 0
United States
Message 242638 - Posted: 4 Feb 2006, 23:54:21 UTC - in response to Message 242401.  
Last modified: 5 Feb 2006, 0:43:43 UTC

Due to the lack of being able to properly post the equations, we might have to close this thread, but was worth a try.


I think the admins won't allow special characters in the bb code for security reasons.

[edit]But you could still continue the thread and post questions.[/edit]

ID: 242638 · Report as offensive
AC
Avatar

Send message
Joined: 22 Jan 05
Posts: 3413
Credit: 119,579
RAC: 0
United States
Message 242663 - Posted: 5 Feb 2006, 0:40:39 UTC - in response to Message 242638.  
Last modified: 5 Feb 2006, 0:41:24 UTC

Deleted double post.
ID: 242663 · Report as offensive

Message boards : Cafe SETI : Physics Test Of Knowledge (How Smart Are You?)


 
©2024 University of California
 
SETI@home and Astropulse are funded by grants from the National Science Foundation, NASA, and donations from SETI@home volunteers. AstroPulse is funded in part by the NSF through grant AST-0307956.