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Physics Experts?

Scheduled Pinned Locked Moved The Lounge
questionhelpgame-devperformance
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  • J Jon Newman

    It looks in the formulas that you have used T in both parts. Are you saying T is equal to 3seconds? If so, then this is not right, there is going to be a time for the stone to drop, and another time for the sound to reach the top.


    "How long has the "Quote Selected Text" been around???"
    - Marc Clifton, Lounge 4 Mar '03
    "But a fresh install - it's like having clean sheets"
    - Chris Maunder Lounge 3 Mar '03


    Jonathan 'nonny' Newman
    Web Designer, Programmer, Lover, Visionary Leader... Homepage [www.nonny.com] [^]

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    moliate
    wrote on last edited by
    #10

    Sorry. The formula at the top is the one I meant. The ones at the bottom are just generic expressions for calculating distance travelled with constant velocity/acceleration... I'll give the answer a better formatting. /moliate


    The corners of my eyes catch hasty, bloodless motion - a mouse? Well, certainly a peripheral of some kind.

    Neil Gaiman - Cold Colours

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    • C co7eguy

      Hey all, I got stuck at this physics question. Looking for help. It's kinda hard, well for me at least. A stone is dropped into a well. The sound of the splash is heard 3.0s later. What is the depth of the well ? (Assume the speed of sound is 340m/s). When the rock drops, it goes uniform acceleration but when you hear the sound, it is uniform motion...That's the hard thing about the question. Too many unknowns for both equation. Am i missing something here? Thanks in advance

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      Nitron
      wrote on last edited by
      #11

      Ok, so I had nothing better to do... ;P Clickety[^] - Nitron


      "Those that say a task is impossible shouldn't interrupt the ones who are doing it." - Chinese Proverb

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      • N Nitron

        Ok, so I had nothing better to do... ;P Clickety[^] - Nitron


        "Those that say a task is impossible shouldn't interrupt the ones who are doing it." - Chinese Proverb

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        l a u r e n
        wrote on last edited by
        #12

        jeeeeeeeez and i thought i was bored :omg:


        "penguins have no bill"
        biz stuff   about me

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        • L l a u r e n

          jeeeeeeeez and i thought i was bored :omg:


          "penguins have no bill"
          biz stuff   about me

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          Nitron
          wrote on last edited by
          #13

          I just wanted to see if I can still think after being sucked into the workforce for the last 2 years... :~ I do have a life, I promise! :rolleyes: - Nitron


          "Those that say a task is impossible shouldn't interrupt the ones who are doing it." - Chinese Proverb

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          • N Nitron

            I just wanted to see if I can still think after being sucked into the workforce for the last 2 years... :~ I do have a life, I promise! :rolleyes: - Nitron


            "Those that say a task is impossible shouldn't interrupt the ones who are doing it." - Chinese Proverb

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            co7eguy
            wrote on last edited by
            #14

            good job niton.

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            • C co7eguy

              good job niton.

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              Nitron
              wrote on last edited by
              #15

              ﻡﺟﻧ_Najm wrote: good job niton. :-D I take it you arrived at the same answer? ;P - Nitron


              "Those that say a task is impossible shouldn't interrupt the ones who are doing it." - Chinese Proverb

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              • C co7eguy

                good job niton.

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                Jon Newman
                wrote on last edited by
                #16

                Looks like a better/quicker version of your's. I may have to try my Physics master on this one. He always likes a challenge.


                "How long has the "Quote Selected Text" been around???"
                - Marc Clifton, Lounge 4 Mar '03
                "But a fresh install - it's like having clean sheets"
                - Chris Maunder Lounge 3 Mar '03


                Jonathan 'nonny' Newman
                Web Designer, Programmer, Lover, Visionary Leader... Homepage [www.nonny.com] [^]

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                • J Jon Newman

                  Mass of the stone? Neglagable air resistance?


                  "How long has the "Quote Selected Text" been around???"
                  - Marc Clifton, Lounge 4 Mar '03
                  "But a fresh install - it's like having clean sheets"
                  - Chris Maunder Lounge 3 Mar '03


                  Jonathan 'nonny' Newman
                  Web Designer, Programmer, Lover, Visionary Leader... Homepage [www.nonny.com] [^]

                  R Offline
                  R Offline
                  Roger Wright
                  wrote on last edited by
                  #17

                  Jonny Newman wrote: Mass of the stone? :laugh::laugh::laugh::laugh::laugh::laugh::laugh::laugh::laugh::laugh::laugh::laugh::laugh::laugh: er, sorry.....:-O It is ok for women not to like sports, so long as they nod in the right places and bring beers at the right times.
                  Paul Watson, on Sports - 2/10/2003

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                  • C co7eguy

                    Hey all, I got stuck at this physics question. Looking for help. It's kinda hard, well for me at least. A stone is dropped into a well. The sound of the splash is heard 3.0s later. What is the depth of the well ? (Assume the speed of sound is 340m/s). When the rock drops, it goes uniform acceleration but when you hear the sound, it is uniform motion...That's the hard thing about the question. Too many unknowns for both equation. Am i missing something here? Thanks in advance

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                    Kevnar
                    wrote on last edited by
                    #18

                    Don't forget to take into account the kittens tied up in the sack causing air resistance on the stone. :~ :laugh:

                    "How many more people have to die before no one ever dies again?" - Daniel Haley, The Onion

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                    • K Kevnar

                      Don't forget to take into account the kittens tied up in the sack causing air resistance on the stone. :~ :laugh:

                      "How many more people have to die before no one ever dies again?" - Daniel Haley, The Onion

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                      BarryJ
                      wrote on last edited by
                      #19

                      It actually says in the problem that the effect of the kittens in the sack is negligable. They covered all the bases.

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                      • C co7eguy

                        this is the hard part...mass of stone not given, and yes, neglagable air resistance

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                        leppie
                        wrote on last edited by
                        #20

                        mass is not important, you should know that. I rated this article 2 by mistake. It deserves more. I wanted to get to the second page... - vjedlicka 3:33 25 Nov '02

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                        • K Kevnar

                          Don't forget to take into account the kittens tied up in the sack causing air resistance on the stone. :~ :laugh:

                          "How many more people have to die before no one ever dies again?" - Daniel Haley, The Onion

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                          Brad Jennings
                          wrote on last edited by
                          #21

                          Please think of the kittens.:-D Brad Jennings "if the golden arches shut shop, where else are the VB people going to get work." - Colin Davies

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                          • R Roger Wright

                            Jonny Newman wrote: Mass of the stone? :laugh::laugh::laugh::laugh::laugh::laugh::laugh::laugh::laugh::laugh::laugh::laugh::laugh::laugh: er, sorry.....:-O It is ok for women not to like sports, so long as they nod in the right places and bring beers at the right times.
                            Paul Watson, on Sports - 2/10/2003

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                            J Offline
                            Jon Newman
                            wrote on last edited by
                            #22

                            Yeah yeah, i know, my physics master would have shot me. I've been revising 'motion' for my physics AS exam, F=dp/dt is running through my brain too much when I should be thinking of the motion equations. Damn me,damn me.....i realised soon after posting that that the mass is not needed.


                            "How long has the "Quote Selected Text" been around???"
                            - Marc Clifton, Lounge 4 Mar '03
                            "But a fresh install - it's like having clean sheets"
                            - Chris Maunder Lounge 3 Mar '03


                            Jonathan 'nonny' Newman
                            Web Designer, Programmer, Lover, Visionary Leader... Homepage [www.nonny.com] [^]

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