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Practical Applications Of Physics

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  • R Roger Wright

    Tonight while refreshing my scotch glass I was reminded, rather pointedly, of the difference between Potential Energy (U) and Kinetic Energy (K), with corollaries relating to the Work/Energy Theorem. It so happenned that, in the course of transferring an ice cube from the tray to my glass in preparation for adding additional quantities of ethanol to bring the total level to an acceptable height, one of the cubes managed to evade my grasp. Under the acceleration of gravity, it's U-value diminished rapidly, being converted into K by the rapid loss of altitude from approximately 39" above the floor to the top of my large toe, located approximately .75 inches above the floor, minus minor losses due to air friction. There were also some losses from friction due to rotation, which brought the mass into an orientation which directed the surface of ultimate contact with the target surface such that, at the moment of elastic collision, the narrowest edge of the ice cube contacted the toe first, minimizing the contact area. This, of course, maximized the impulse associated with the energy transfer which occured on contact, resulting in a peak energy transfer to the bone just above the knuckle of the toe. The momentary, but excruciating pain which resulted is intuitively ocbvious to a casual observer, but for the quiz: (1) Determine the energy (in kWh) delivered to the toe, given that the dimensions of the cube are 1.8" x .75" x .95", the area of contact is approximately 1/8" x 1/4", the composition of the cube is essentially pure water, at approximately 65 lbs/cu. ft., and the acceleration of gravity is 7.138 x 1010 furlongs per fortnight2. Assume the elasticity of collision to be .80, and illustrate your answer with a free-body diagram. (2) Estimate (to the nearest ounce) the quantity of ethanol required to numb the resulting pain for 1 hour. Bonus Question: Given a generator heat rate of 9.6 mmBTU/MWh, how many cubic feet of natural gas would be required to generate this much energy? How many tons of carbon (in the form of CO2) would be emitted into the atmosphere in the process? Keep your notes, as this question may appear on the final exam.

    Will Rogers never met me.

    D Offline
    D Offline
    Dalek Dave
    wrote on last edited by
    #8

    This requires empirical experimentation. (And a neat Malt may have a Single lump of ice, but you pur the Malt over the ice, slowly, so as not to bruise it.) [TIME PASSES] After severl exporemnit with th e mAlt nad Ice I can say , your my besd mate , I love you man , where sMy kebab?

    ------------------------------------ I will never again mention that I was the poster of the One Millionth Lounge Post, nor that it was complete drivel. Dalek Dave CCC Link[^] Trolls[^]

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    • R Roger Wright

      Tonight while refreshing my scotch glass I was reminded, rather pointedly, of the difference between Potential Energy (U) and Kinetic Energy (K), with corollaries relating to the Work/Energy Theorem. It so happenned that, in the course of transferring an ice cube from the tray to my glass in preparation for adding additional quantities of ethanol to bring the total level to an acceptable height, one of the cubes managed to evade my grasp. Under the acceleration of gravity, it's U-value diminished rapidly, being converted into K by the rapid loss of altitude from approximately 39" above the floor to the top of my large toe, located approximately .75 inches above the floor, minus minor losses due to air friction. There were also some losses from friction due to rotation, which brought the mass into an orientation which directed the surface of ultimate contact with the target surface such that, at the moment of elastic collision, the narrowest edge of the ice cube contacted the toe first, minimizing the contact area. This, of course, maximized the impulse associated with the energy transfer which occured on contact, resulting in a peak energy transfer to the bone just above the knuckle of the toe. The momentary, but excruciating pain which resulted is intuitively ocbvious to a casual observer, but for the quiz: (1) Determine the energy (in kWh) delivered to the toe, given that the dimensions of the cube are 1.8" x .75" x .95", the area of contact is approximately 1/8" x 1/4", the composition of the cube is essentially pure water, at approximately 65 lbs/cu. ft., and the acceleration of gravity is 7.138 x 1010 furlongs per fortnight2. Assume the elasticity of collision to be .80, and illustrate your answer with a free-body diagram. (2) Estimate (to the nearest ounce) the quantity of ethanol required to numb the resulting pain for 1 hour. Bonus Question: Given a generator heat rate of 9.6 mmBTU/MWh, how many cubic feet of natural gas would be required to generate this much energy? How many tons of carbon (in the form of CO2) would be emitted into the atmosphere in the process? Keep your notes, as this question may appear on the final exam.

      Will Rogers never met me.

      OriginalGriffO Offline
      OriginalGriffO Offline
      OriginalGriff
      wrote on last edited by
      #9

      Or, wear shoes and avoid all that difficult math. Which becomes increasingly difficult with each application of liquid pain relief.

      Real men don't use instructions. They are only the manufacturers opinion on how to put the thing together. Manfred R. Bihy: "Looks as if OP is learning resistant."

      "I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
      "Common sense is so rare these days, it should be classified as a super power" - Random T-shirt

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      • R Roger Wright

        Tonight while refreshing my scotch glass I was reminded, rather pointedly, of the difference between Potential Energy (U) and Kinetic Energy (K), with corollaries relating to the Work/Energy Theorem. It so happenned that, in the course of transferring an ice cube from the tray to my glass in preparation for adding additional quantities of ethanol to bring the total level to an acceptable height, one of the cubes managed to evade my grasp. Under the acceleration of gravity, it's U-value diminished rapidly, being converted into K by the rapid loss of altitude from approximately 39" above the floor to the top of my large toe, located approximately .75 inches above the floor, minus minor losses due to air friction. There were also some losses from friction due to rotation, which brought the mass into an orientation which directed the surface of ultimate contact with the target surface such that, at the moment of elastic collision, the narrowest edge of the ice cube contacted the toe first, minimizing the contact area. This, of course, maximized the impulse associated with the energy transfer which occured on contact, resulting in a peak energy transfer to the bone just above the knuckle of the toe. The momentary, but excruciating pain which resulted is intuitively ocbvious to a casual observer, but for the quiz: (1) Determine the energy (in kWh) delivered to the toe, given that the dimensions of the cube are 1.8" x .75" x .95", the area of contact is approximately 1/8" x 1/4", the composition of the cube is essentially pure water, at approximately 65 lbs/cu. ft., and the acceleration of gravity is 7.138 x 1010 furlongs per fortnight2. Assume the elasticity of collision to be .80, and illustrate your answer with a free-body diagram. (2) Estimate (to the nearest ounce) the quantity of ethanol required to numb the resulting pain for 1 hour. Bonus Question: Given a generator heat rate of 9.6 mmBTU/MWh, how many cubic feet of natural gas would be required to generate this much energy? How many tons of carbon (in the form of CO2) would be emitted into the atmosphere in the process? Keep your notes, as this question may appear on the final exam.

        Will Rogers never met me.

        P Offline
        P Offline
        Pete OHanlon
        wrote on last edited by
        #10

        This is, actually, an Applied Mathematics problem so I feel much more qualified to answer the question:

        Roger Wright wrote:

        Estimate (to the nearest ounce) the quantity of ethanol required to numb the resulting pain for 1 hour.

        Who cares? Just keep liberally applying to tonsils until the sympathetic effect kicks in and your toe stops throbbing.

        Forgive your enemies - it messes with their heads

        My blog | My articles | MoXAML PowerToys | Mole 2010 - debugging made easier - my favourite utility

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        • R Roger Wright

          Tonight while refreshing my scotch glass I was reminded, rather pointedly, of the difference between Potential Energy (U) and Kinetic Energy (K), with corollaries relating to the Work/Energy Theorem. It so happenned that, in the course of transferring an ice cube from the tray to my glass in preparation for adding additional quantities of ethanol to bring the total level to an acceptable height, one of the cubes managed to evade my grasp. Under the acceleration of gravity, it's U-value diminished rapidly, being converted into K by the rapid loss of altitude from approximately 39" above the floor to the top of my large toe, located approximately .75 inches above the floor, minus minor losses due to air friction. There were also some losses from friction due to rotation, which brought the mass into an orientation which directed the surface of ultimate contact with the target surface such that, at the moment of elastic collision, the narrowest edge of the ice cube contacted the toe first, minimizing the contact area. This, of course, maximized the impulse associated with the energy transfer which occured on contact, resulting in a peak energy transfer to the bone just above the knuckle of the toe. The momentary, but excruciating pain which resulted is intuitively ocbvious to a casual observer, but for the quiz: (1) Determine the energy (in kWh) delivered to the toe, given that the dimensions of the cube are 1.8" x .75" x .95", the area of contact is approximately 1/8" x 1/4", the composition of the cube is essentially pure water, at approximately 65 lbs/cu. ft., and the acceleration of gravity is 7.138 x 1010 furlongs per fortnight2. Assume the elasticity of collision to be .80, and illustrate your answer with a free-body diagram. (2) Estimate (to the nearest ounce) the quantity of ethanol required to numb the resulting pain for 1 hour. Bonus Question: Given a generator heat rate of 9.6 mmBTU/MWh, how many cubic feet of natural gas would be required to generate this much energy? How many tons of carbon (in the form of CO2) would be emitted into the atmosphere in the process? Keep your notes, as this question may appear on the final exam.

          Will Rogers never met me.

          R Offline
          R Offline
          Rage
          wrote on last edited by
          #11

          According to my maths, you should be footless and have a big hole in the floor of your kitchen, and your ice cube spoiled as much CO2 as the 45000km emitted by my car last year. :doh:

          OriginalGriffO 1 Reply Last reply
          0
          • R Roger Wright

            Tonight while refreshing my scotch glass I was reminded, rather pointedly, of the difference between Potential Energy (U) and Kinetic Energy (K), with corollaries relating to the Work/Energy Theorem. It so happenned that, in the course of transferring an ice cube from the tray to my glass in preparation for adding additional quantities of ethanol to bring the total level to an acceptable height, one of the cubes managed to evade my grasp. Under the acceleration of gravity, it's U-value diminished rapidly, being converted into K by the rapid loss of altitude from approximately 39" above the floor to the top of my large toe, located approximately .75 inches above the floor, minus minor losses due to air friction. There were also some losses from friction due to rotation, which brought the mass into an orientation which directed the surface of ultimate contact with the target surface such that, at the moment of elastic collision, the narrowest edge of the ice cube contacted the toe first, minimizing the contact area. This, of course, maximized the impulse associated with the energy transfer which occured on contact, resulting in a peak energy transfer to the bone just above the knuckle of the toe. The momentary, but excruciating pain which resulted is intuitively ocbvious to a casual observer, but for the quiz: (1) Determine the energy (in kWh) delivered to the toe, given that the dimensions of the cube are 1.8" x .75" x .95", the area of contact is approximately 1/8" x 1/4", the composition of the cube is essentially pure water, at approximately 65 lbs/cu. ft., and the acceleration of gravity is 7.138 x 1010 furlongs per fortnight2. Assume the elasticity of collision to be .80, and illustrate your answer with a free-body diagram. (2) Estimate (to the nearest ounce) the quantity of ethanol required to numb the resulting pain for 1 hour. Bonus Question: Given a generator heat rate of 9.6 mmBTU/MWh, how many cubic feet of natural gas would be required to generate this much energy? How many tons of carbon (in the form of CO2) would be emitted into the atmosphere in the process? Keep your notes, as this question may appear on the final exam.

            Will Rogers never met me.

            V Offline
            V Offline
            V 0
            wrote on last edited by
            #12

            A quarter pounder with cheese or a royale with cheese if you're in the metric system.

            V.

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            • R Rage

              According to my maths, you should be footless and have a big hole in the floor of your kitchen, and your ice cube spoiled as much CO2 as the 45000km emitted by my car last year. :doh:

              OriginalGriffO Offline
              OriginalGriffO Offline
              OriginalGriff
              wrote on last edited by
              #13

              How much CO2 is 45000Km? Is that a lot? :-D

              Real men don't use instructions. They are only the manufacturers opinion on how to put the thing together. Manfred R. Bihy: "Looks as if OP is learning resistant."

              "I have no idea what I did, but I'm taking full credit for it." - ThisOldTony
              "Common sense is so rare these days, it should be classified as a super power" - Random T-shirt

              R 1 Reply Last reply
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              • OriginalGriffO OriginalGriff

                How much CO2 is 45000Km? Is that a lot? :-D

                Real men don't use instructions. They are only the manufacturers opinion on how to put the thing together. Manfred R. Bihy: "Looks as if OP is learning resistant."

                R Offline
                R Offline
                Rage
                wrote on last edited by
                #14

                Must be about 540kW of Vodka.

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                • _ _Damian S_

                  lol... are you a neat freak, or do you do the two drops of water with an eye-dropper to break the surface tension?

                  Reminiscing just isn't what it used to be!! Booger Mobile - My bright green 1964 Ford Falcon - check out the blog here!! | If you feel generous - make a donation to Camp Quality!!

                  K Offline
                  K Offline
                  Keith Barrow
                  wrote on last edited by
                  #15

                  I rarely drink whisky, but when I do it is normlly neat, occaisionally with water. The main problem with ice is the cold, it kills the taste, ruining the good stuff. Some of the real buffs drink whisky watered from the same source as the distillary uses, my palette isn't that subtle...

                  Sort of a cross between Lawrence of Arabia and Dilbert.[^]
                  -Or-
                  A Dead ringer for Kate Winslett[^]

                  P 1 Reply Last reply
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                  • R Roger Wright

                    Tonight while refreshing my scotch glass I was reminded, rather pointedly, of the difference between Potential Energy (U) and Kinetic Energy (K), with corollaries relating to the Work/Energy Theorem. It so happenned that, in the course of transferring an ice cube from the tray to my glass in preparation for adding additional quantities of ethanol to bring the total level to an acceptable height, one of the cubes managed to evade my grasp. Under the acceleration of gravity, it's U-value diminished rapidly, being converted into K by the rapid loss of altitude from approximately 39" above the floor to the top of my large toe, located approximately .75 inches above the floor, minus minor losses due to air friction. There were also some losses from friction due to rotation, which brought the mass into an orientation which directed the surface of ultimate contact with the target surface such that, at the moment of elastic collision, the narrowest edge of the ice cube contacted the toe first, minimizing the contact area. This, of course, maximized the impulse associated with the energy transfer which occured on contact, resulting in a peak energy transfer to the bone just above the knuckle of the toe. The momentary, but excruciating pain which resulted is intuitively ocbvious to a casual observer, but for the quiz: (1) Determine the energy (in kWh) delivered to the toe, given that the dimensions of the cube are 1.8" x .75" x .95", the area of contact is approximately 1/8" x 1/4", the composition of the cube is essentially pure water, at approximately 65 lbs/cu. ft., and the acceleration of gravity is 7.138 x 1010 furlongs per fortnight2. Assume the elasticity of collision to be .80, and illustrate your answer with a free-body diagram. (2) Estimate (to the nearest ounce) the quantity of ethanol required to numb the resulting pain for 1 hour. Bonus Question: Given a generator heat rate of 9.6 mmBTU/MWh, how many cubic feet of natural gas would be required to generate this much energy? How many tons of carbon (in the form of CO2) would be emitted into the atmosphere in the process? Keep your notes, as this question may appear on the final exam.

                    Will Rogers never met me.

                    P Offline
                    P Offline
                    Phil J Pearson
                    wrote on last edited by
                    #16

                    Gimmee codez!

                    Phil


                    The opinions expressed in this post are not necessarily those of the author, especially if you find them impolite, inaccurate or inflammatory.

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                    • R Roger Wright

                      Tonight while refreshing my scotch glass I was reminded, rather pointedly, of the difference between Potential Energy (U) and Kinetic Energy (K), with corollaries relating to the Work/Energy Theorem. It so happenned that, in the course of transferring an ice cube from the tray to my glass in preparation for adding additional quantities of ethanol to bring the total level to an acceptable height, one of the cubes managed to evade my grasp. Under the acceleration of gravity, it's U-value diminished rapidly, being converted into K by the rapid loss of altitude from approximately 39" above the floor to the top of my large toe, located approximately .75 inches above the floor, minus minor losses due to air friction. There were also some losses from friction due to rotation, which brought the mass into an orientation which directed the surface of ultimate contact with the target surface such that, at the moment of elastic collision, the narrowest edge of the ice cube contacted the toe first, minimizing the contact area. This, of course, maximized the impulse associated with the energy transfer which occured on contact, resulting in a peak energy transfer to the bone just above the knuckle of the toe. The momentary, but excruciating pain which resulted is intuitively ocbvious to a casual observer, but for the quiz: (1) Determine the energy (in kWh) delivered to the toe, given that the dimensions of the cube are 1.8" x .75" x .95", the area of contact is approximately 1/8" x 1/4", the composition of the cube is essentially pure water, at approximately 65 lbs/cu. ft., and the acceleration of gravity is 7.138 x 1010 furlongs per fortnight2. Assume the elasticity of collision to be .80, and illustrate your answer with a free-body diagram. (2) Estimate (to the nearest ounce) the quantity of ethanol required to numb the resulting pain for 1 hour. Bonus Question: Given a generator heat rate of 9.6 mmBTU/MWh, how many cubic feet of natural gas would be required to generate this much energy? How many tons of carbon (in the form of CO2) would be emitted into the atmosphere in the process? Keep your notes, as this question may appear on the final exam.

                      Will Rogers never met me.

                      D Offline
                      D Offline
                      Dan Neely
                      wrote on last edited by
                      #17
                      1. The Remainder of the bottle?

                      3x12=36 2x12=24 1x12=12 0x12=18

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                      • R Roger Wright

                        Tonight while refreshing my scotch glass I was reminded, rather pointedly, of the difference between Potential Energy (U) and Kinetic Energy (K), with corollaries relating to the Work/Energy Theorem. It so happenned that, in the course of transferring an ice cube from the tray to my glass in preparation for adding additional quantities of ethanol to bring the total level to an acceptable height, one of the cubes managed to evade my grasp. Under the acceleration of gravity, it's U-value diminished rapidly, being converted into K by the rapid loss of altitude from approximately 39" above the floor to the top of my large toe, located approximately .75 inches above the floor, minus minor losses due to air friction. There were also some losses from friction due to rotation, which brought the mass into an orientation which directed the surface of ultimate contact with the target surface such that, at the moment of elastic collision, the narrowest edge of the ice cube contacted the toe first, minimizing the contact area. This, of course, maximized the impulse associated with the energy transfer which occured on contact, resulting in a peak energy transfer to the bone just above the knuckle of the toe. The momentary, but excruciating pain which resulted is intuitively ocbvious to a casual observer, but for the quiz: (1) Determine the energy (in kWh) delivered to the toe, given that the dimensions of the cube are 1.8" x .75" x .95", the area of contact is approximately 1/8" x 1/4", the composition of the cube is essentially pure water, at approximately 65 lbs/cu. ft., and the acceleration of gravity is 7.138 x 1010 furlongs per fortnight2. Assume the elasticity of collision to be .80, and illustrate your answer with a free-body diagram. (2) Estimate (to the nearest ounce) the quantity of ethanol required to numb the resulting pain for 1 hour. Bonus Question: Given a generator heat rate of 9.6 mmBTU/MWh, how many cubic feet of natural gas would be required to generate this much energy? How many tons of carbon (in the form of CO2) would be emitted into the atmosphere in the process? Keep your notes, as this question may appear on the final exam.

                        Will Rogers never met me.

                        G Offline
                        G Offline
                        GenJerDan
                        wrote on last edited by
                        #18

                        When our physics prof explained to us that carrying a bowling ball up a flight of stairs, then carrying it down again results in 0 change in energy levels, i.e. no work done, we decided that physics had no application in the real world.

                        Build a man a fire, and he'll be warm for a day. Set a man on fire, and he'll be warm for the rest of his life. My Mu[sic] My Films My Windows Programs, etc.

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                        • _ _Damian S_

                          lol... are you a neat freak, or do you do the two drops of water with an eye-dropper to break the surface tension?

                          Reminiscing just isn't what it used to be!! Booger Mobile - My bright green 1964 Ford Falcon - check out the blog here!! | If you feel generous - make a donation to Camp Quality!!

                          P Offline
                          P Offline
                          peterchen
                          wrote on last edited by
                          #19

                          It's just not done. Unless you only have a cheap knockoff at your disposal, and the only alternative would be a slightly fermented coconut fruit punch. Then the ice is the difference between "well, it was not bad, my lad, a bit cold maybe" and GAAAAH! WHAT ABOMINATION IS THAT?

                          FILETIME to time_t
                          | FoldWithUs! | sighist | WhoIncludes - Analyzing C++ include file hierarchy

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                          • K Keith Barrow

                            I rarely drink whisky, but when I do it is normlly neat, occaisionally with water. The main problem with ice is the cold, it kills the taste, ruining the good stuff. Some of the real buffs drink whisky watered from the same source as the distillary uses, my palette isn't that subtle...

                            Sort of a cross between Lawrence of Arabia and Dilbert.[^]
                            -Or-
                            A Dead ringer for Kate Winslett[^]

                            P Offline
                            P Offline
                            peterchen
                            wrote on last edited by
                            #20

                            Keith Barrow wrote:

                            palate

                            FTFY because you seem to be a distinguished gentleman and able to take that small hint as well-intended as it is.

                            FILETIME to time_t
                            | FoldWithUs! | sighist | WhoIncludes - Analyzing C++ include file hierarchy

                            K 1 Reply Last reply
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                            • P peterchen

                              Keith Barrow wrote:

                              palate

                              FTFY because you seem to be a distinguished gentleman and able to take that small hint as well-intended as it is.

                              FILETIME to time_t
                              | FoldWithUs! | sighist | WhoIncludes - Analyzing C++ include file hierarchy

                              K Offline
                              K Offline
                              Keith Barrow
                              wrote on last edited by
                              #21

                              My spelling is and always has been abysmal. I take the view that when they make it rational, I'll try to improve :). Anyway, as one chap to another, I thought you'd like this[^]

                              Sort of a cross between Lawrence of Arabia and Dilbert.[^]
                              -Or-
                              A Dead ringer for Kate Winslett[^]

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