U-Rohr
About points...
We associate a certain number of points with each exercise.
When you click an exercise into a collection, this number will be taken as points for the exercise, kind of "by default".
But once the exercise is on the collection, you can edit the number of points for the exercise in the collection independently, without any effect on "points by default" as represented by the number here.
That being said... How many "default points" should you associate with an exercise upon creation?
As with difficulty, there is no straight forward and generally accepted way.
But as a guideline, we tend to give as many points by default as there are mathematical steps to do in the exercise.
Again, very vague... But the number should kind of represent the "work" required.
When you click an exercise into a collection, this number will be taken as points for the exercise, kind of "by default".
But once the exercise is on the collection, you can edit the number of points for the exercise in the collection independently, without any effect on "points by default" as represented by the number here.
That being said... How many "default points" should you associate with an exercise upon creation?
As with difficulty, there is no straight forward and generally accepted way.
But as a guideline, we tend to give as many points by default as there are mathematical steps to do in the exercise.
Again, very vague... But the number should kind of represent the "work" required.
About difficulty...
We associate a certain difficulty with each exercise.
When you click an exercise into a collection, this number will be taken as difficulty for the exercise, kind of "by default".
But once the exercise is on the collection, you can edit its difficulty in the collection independently, without any effect on the "difficulty by default" here.
Why we use chess pieces? Well... we like chess, we like playing around with \(\LaTeX\)-fonts, we wanted symbols that need less space than six stars in a table-column... But in your layouts, you are of course free to indicate the difficulty of the exercise the way you want.
That being said... How "difficult" is an exercise? It depends on many factors, like what was being taught etc.
In physics exercises, we try to follow this pattern:
Level 1 - One formula (one you would find in a reference book) is enough to solve the exercise. Example exercise
Level 2 - Two formulas are needed, it's possible to compute an "in-between" solution, i.e. no algebraic equation needed. Example exercise
Level 3 - "Chain-computations" like on level 2, but 3+ calculations. Still, no equations, i.e. you are not forced to solve it in an algebraic manner. Example exercise
Level 4 - Exercise needs to be solved by algebraic equations, not possible to calculate numerical "in-between" results. Example exercise
Level 5 -
Level 6 -
When you click an exercise into a collection, this number will be taken as difficulty for the exercise, kind of "by default".
But once the exercise is on the collection, you can edit its difficulty in the collection independently, without any effect on the "difficulty by default" here.
Why we use chess pieces? Well... we like chess, we like playing around with \(\LaTeX\)-fonts, we wanted symbols that need less space than six stars in a table-column... But in your layouts, you are of course free to indicate the difficulty of the exercise the way you want.
That being said... How "difficult" is an exercise? It depends on many factors, like what was being taught etc.
In physics exercises, we try to follow this pattern:
Level 1 - One formula (one you would find in a reference book) is enough to solve the exercise. Example exercise
Level 2 - Two formulas are needed, it's possible to compute an "in-between" solution, i.e. no algebraic equation needed. Example exercise
Level 3 - "Chain-computations" like on level 2, but 3+ calculations. Still, no equations, i.e. you are not forced to solve it in an algebraic manner. Example exercise
Level 4 - Exercise needs to be solved by algebraic equations, not possible to calculate numerical "in-between" results. Example exercise
Level 5 -
Level 6 -
Question
Solution
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Video
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Exercise:
minipagec.textwidth Das rechts abgebildete offene U-Rohr Ao Querschnittfläche ist mit mo Quecksilber gefüllt. Die Flüssigkeit werde auf der einen Seite hyo nach unten gedrückt und losgelassen. Unter Vernachlässigung der Dämpfung schwingt die Flüssigkeit mit der Kreisfrequenz al omega_ sqrtfracrho gAm abclist abc Berechne die Kreisfrequenz für diesen ungedämpften Fall. hfill P abclist minipage hfill minipagec.textwidth center tikzpicturescale. drawcolorgreen!!black dashed --- noderight Ruhelage; filldrawfillgray!!white drawblue ---- --- arc -:: -- ---- to controls+:. and +:. ------ arc :-: ------ -- - to controls+:. and +:. - ---; drawthick - to controls+:. and +:. -; drawthick to controls+:. and +:. ; drawthick - to controls+:-. and +:-. -; drawthick to controls+:-. and +:-. ; drawcolorgreen!!black |-latex .--. nodebelow y; filldrawcoloryellow!!white to controls+:. and +:. -- to controls+:-. and +:-. ; node at A; drawthick ----; drawthick ----; drawthick --; drawthick --; drawthick arc :-:; drawthick arc :-:; drawthick - to controls+:. and +:. -; drawthick to controls+:. and +:. ; drawthick - to controls+:-. and +:-. -; drawthick to controls+:-. and +:-. ; tikzpicture center minipage bigskip Im Experiment stellt man fest dass bereits nach t die Amplitude nur noch yo beträgt. abclist setcounterabc setcounterenumii abc Berechne die Abklingkonstante. hfill P abc Wie gross ist die Schwingungsdauer des gedämpften Systems? hfill P abc Skizziere im folgen Diagramm die Auslenkung des gedämpften Systems in Abhängigkeit der Zeit. hfill P abclist center tikzpicture tkzInitxmin xmax ymin- ymax tkzGridsub subystep. subxstep. tkzDrawXright labelt/sis tkzDrawYabove labely/simm tkzTextbelowsmall. tkzTextbelowsmall. tkzTextleftsmall tkzTextleft-small- tkzTextleftsmall tkzTextleft-small- tkzTextleftsmall tkzTextleft-small- tkzTextleftsmall tkzTextleft-small- tkzTextleftsmall tikzpicture center
Solution:
abclist abc al omega_ sqrtfracRncgAm Wo approx WoIII abc al hat yt hat y_ e^-delta t delta Df -fractlnfracyhy D approx DIII abc al T Tf fracpisqrtqtyWo^-qtyD^ T approx TIII abc phantom. center tikzpicture tkzInitxmin xmax ymin- ymax tkzGridsub subystep. subxstep. tkzDrawXright labelt/sis tkzDrawYabove labely/simm tkzTextbelowsmall. tkzTextbelowsmall. tkzTextleftsmall tkzTextleft-small- tkzTextleftsmall tkzTextleft-small- tkzTextleftsmall tkzTextleft-small- tkzTextleftsmall tkzTextleft-small- tkzTextleftsmall tkzFctvery thick darkgreen*exp-.*x tkzDefPoByFct tkzTextabove right darkgreentkzPoResultsmallhat y_ e^-delta t tkzTextleft darkred.-.smallhat y_ e^-delta t cosomega t tkzFctvery thick darkgreen-*exp-.*x tkzDefPoByFct tkzTextbelow right darkgreentkzPoResultsmall-hat y_ e^-delta t tkzFctvery thick darkred*exp-.*x*cosdeg.*x tikzpicture center abclist
minipagec.textwidth Das rechts abgebildete offene U-Rohr Ao Querschnittfläche ist mit mo Quecksilber gefüllt. Die Flüssigkeit werde auf der einen Seite hyo nach unten gedrückt und losgelassen. Unter Vernachlässigung der Dämpfung schwingt die Flüssigkeit mit der Kreisfrequenz al omega_ sqrtfracrho gAm abclist abc Berechne die Kreisfrequenz für diesen ungedämpften Fall. hfill P abclist minipage hfill minipagec.textwidth center tikzpicturescale. drawcolorgreen!!black dashed --- noderight Ruhelage; filldrawfillgray!!white drawblue ---- --- arc -:: -- ---- to controls+:. and +:. ------ arc :-: ------ -- - to controls+:. and +:. - ---; drawthick - to controls+:. and +:. -; drawthick to controls+:. and +:. ; drawthick - to controls+:-. and +:-. -; drawthick to controls+:-. and +:-. ; drawcolorgreen!!black |-latex .--. nodebelow y; filldrawcoloryellow!!white to controls+:. and +:. -- to controls+:-. and +:-. ; node at A; drawthick ----; drawthick ----; drawthick --; drawthick --; drawthick arc :-:; drawthick arc :-:; drawthick - to controls+:. and +:. -; drawthick to controls+:. and +:. ; drawthick - to controls+:-. and +:-. -; drawthick to controls+:-. and +:-. ; tikzpicture center minipage bigskip Im Experiment stellt man fest dass bereits nach t die Amplitude nur noch yo beträgt. abclist setcounterabc setcounterenumii abc Berechne die Abklingkonstante. hfill P abc Wie gross ist die Schwingungsdauer des gedämpften Systems? hfill P abc Skizziere im folgen Diagramm die Auslenkung des gedämpften Systems in Abhängigkeit der Zeit. hfill P abclist center tikzpicture tkzInitxmin xmax ymin- ymax tkzGridsub subystep. subxstep. tkzDrawXright labelt/sis tkzDrawYabove labely/simm tkzTextbelowsmall. tkzTextbelowsmall. tkzTextleftsmall tkzTextleft-small- tkzTextleftsmall tkzTextleft-small- tkzTextleftsmall tkzTextleft-small- tkzTextleftsmall tkzTextleft-small- tkzTextleftsmall tikzpicture center
Solution:
abclist abc al omega_ sqrtfracRncgAm Wo approx WoIII abc al hat yt hat y_ e^-delta t delta Df -fractlnfracyhy D approx DIII abc al T Tf fracpisqrtqtyWo^-qtyD^ T approx TIII abc phantom. center tikzpicture tkzInitxmin xmax ymin- ymax tkzGridsub subystep. subxstep. tkzDrawXright labelt/sis tkzDrawYabove labely/simm tkzTextbelowsmall. tkzTextbelowsmall. tkzTextleftsmall tkzTextleft-small- tkzTextleftsmall tkzTextleft-small- tkzTextleftsmall tkzTextleft-small- tkzTextleftsmall tkzTextleft-small- tkzTextleftsmall tkzFctvery thick darkgreen*exp-.*x tkzDefPoByFct tkzTextabove right darkgreentkzPoResultsmallhat y_ e^-delta t tkzTextleft darkred.-.smallhat y_ e^-delta t cosomega t tkzFctvery thick darkgreen-*exp-.*x tkzDefPoByFct tkzTextbelow right darkgreentkzPoResultsmall-hat y_ e^-delta t tkzFctvery thick darkred*exp-.*x*cosdeg.*x tikzpicture center abclist
Meta Information
Exercise:
minipagec.textwidth Das rechts abgebildete offene U-Rohr Ao Querschnittfläche ist mit mo Quecksilber gefüllt. Die Flüssigkeit werde auf der einen Seite hyo nach unten gedrückt und losgelassen. Unter Vernachlässigung der Dämpfung schwingt die Flüssigkeit mit der Kreisfrequenz al omega_ sqrtfracrho gAm abclist abc Berechne die Kreisfrequenz für diesen ungedämpften Fall. hfill P abclist minipage hfill minipagec.textwidth center tikzpicturescale. drawcolorgreen!!black dashed --- noderight Ruhelage; filldrawfillgray!!white drawblue ---- --- arc -:: -- ---- to controls+:. and +:. ------ arc :-: ------ -- - to controls+:. and +:. - ---; drawthick - to controls+:. and +:. -; drawthick to controls+:. and +:. ; drawthick - to controls+:-. and +:-. -; drawthick to controls+:-. and +:-. ; drawcolorgreen!!black |-latex .--. nodebelow y; filldrawcoloryellow!!white to controls+:. and +:. -- to controls+:-. and +:-. ; node at A; drawthick ----; drawthick ----; drawthick --; drawthick --; drawthick arc :-:; drawthick arc :-:; drawthick - to controls+:. and +:. -; drawthick to controls+:. and +:. ; drawthick - to controls+:-. and +:-. -; drawthick to controls+:-. and +:-. ; tikzpicture center minipage bigskip Im Experiment stellt man fest dass bereits nach t die Amplitude nur noch yo beträgt. abclist setcounterabc setcounterenumii abc Berechne die Abklingkonstante. hfill P abc Wie gross ist die Schwingungsdauer des gedämpften Systems? hfill P abc Skizziere im folgen Diagramm die Auslenkung des gedämpften Systems in Abhängigkeit der Zeit. hfill P abclist center tikzpicture tkzInitxmin xmax ymin- ymax tkzGridsub subystep. subxstep. tkzDrawXright labelt/sis tkzDrawYabove labely/simm tkzTextbelowsmall. tkzTextbelowsmall. tkzTextleftsmall tkzTextleft-small- tkzTextleftsmall tkzTextleft-small- tkzTextleftsmall tkzTextleft-small- tkzTextleftsmall tkzTextleft-small- tkzTextleftsmall tikzpicture center
Solution:
abclist abc al omega_ sqrtfracRncgAm Wo approx WoIII abc al hat yt hat y_ e^-delta t delta Df -fractlnfracyhy D approx DIII abc al T Tf fracpisqrtqtyWo^-qtyD^ T approx TIII abc phantom. center tikzpicture tkzInitxmin xmax ymin- ymax tkzGridsub subystep. subxstep. tkzDrawXright labelt/sis tkzDrawYabove labely/simm tkzTextbelowsmall. tkzTextbelowsmall. tkzTextleftsmall tkzTextleft-small- tkzTextleftsmall tkzTextleft-small- tkzTextleftsmall tkzTextleft-small- tkzTextleftsmall tkzTextleft-small- tkzTextleftsmall tkzFctvery thick darkgreen*exp-.*x tkzDefPoByFct tkzTextabove right darkgreentkzPoResultsmallhat y_ e^-delta t tkzTextleft darkred.-.smallhat y_ e^-delta t cosomega t tkzFctvery thick darkgreen-*exp-.*x tkzDefPoByFct tkzTextbelow right darkgreentkzPoResultsmall-hat y_ e^-delta t tkzFctvery thick darkred*exp-.*x*cosdeg.*x tikzpicture center abclist
minipagec.textwidth Das rechts abgebildete offene U-Rohr Ao Querschnittfläche ist mit mo Quecksilber gefüllt. Die Flüssigkeit werde auf der einen Seite hyo nach unten gedrückt und losgelassen. Unter Vernachlässigung der Dämpfung schwingt die Flüssigkeit mit der Kreisfrequenz al omega_ sqrtfracrho gAm abclist abc Berechne die Kreisfrequenz für diesen ungedämpften Fall. hfill P abclist minipage hfill minipagec.textwidth center tikzpicturescale. drawcolorgreen!!black dashed --- noderight Ruhelage; filldrawfillgray!!white drawblue ---- --- arc -:: -- ---- to controls+:. and +:. ------ arc :-: ------ -- - to controls+:. and +:. - ---; drawthick - to controls+:. and +:. -; drawthick to controls+:. and +:. ; drawthick - to controls+:-. and +:-. -; drawthick to controls+:-. and +:-. ; drawcolorgreen!!black |-latex .--. nodebelow y; filldrawcoloryellow!!white to controls+:. and +:. -- to controls+:-. and +:-. ; node at A; drawthick ----; drawthick ----; drawthick --; drawthick --; drawthick arc :-:; drawthick arc :-:; drawthick - to controls+:. and +:. -; drawthick to controls+:. and +:. ; drawthick - to controls+:-. and +:-. -; drawthick to controls+:-. and +:-. ; tikzpicture center minipage bigskip Im Experiment stellt man fest dass bereits nach t die Amplitude nur noch yo beträgt. abclist setcounterabc setcounterenumii abc Berechne die Abklingkonstante. hfill P abc Wie gross ist die Schwingungsdauer des gedämpften Systems? hfill P abc Skizziere im folgen Diagramm die Auslenkung des gedämpften Systems in Abhängigkeit der Zeit. hfill P abclist center tikzpicture tkzInitxmin xmax ymin- ymax tkzGridsub subystep. subxstep. tkzDrawXright labelt/sis tkzDrawYabove labely/simm tkzTextbelowsmall. tkzTextbelowsmall. tkzTextleftsmall tkzTextleft-small- tkzTextleftsmall tkzTextleft-small- tkzTextleftsmall tkzTextleft-small- tkzTextleftsmall tkzTextleft-small- tkzTextleftsmall tikzpicture center
Solution:
abclist abc al omega_ sqrtfracRncgAm Wo approx WoIII abc al hat yt hat y_ e^-delta t delta Df -fractlnfracyhy D approx DIII abc al T Tf fracpisqrtqtyWo^-qtyD^ T approx TIII abc phantom. center tikzpicture tkzInitxmin xmax ymin- ymax tkzGridsub subystep. subxstep. tkzDrawXright labelt/sis tkzDrawYabove labely/simm tkzTextbelowsmall. tkzTextbelowsmall. tkzTextleftsmall tkzTextleft-small- tkzTextleftsmall tkzTextleft-small- tkzTextleftsmall tkzTextleft-small- tkzTextleftsmall tkzTextleft-small- tkzTextleftsmall tkzFctvery thick darkgreen*exp-.*x tkzDefPoByFct tkzTextabove right darkgreentkzPoResultsmallhat y_ e^-delta t tkzTextleft darkred.-.smallhat y_ e^-delta t cosomega t tkzFctvery thick darkgreen-*exp-.*x tkzDefPoByFct tkzTextbelow right darkgreentkzPoResultsmall-hat y_ e^-delta t tkzFctvery thick darkred*exp-.*x*cosdeg.*x tikzpicture center abclist
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