Raum-Zeit-Abstände von Ereignissen
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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Exercise:
Im Bezugssystem von Beobachter mathcalA findet zur Zeit t bei x das Ereignis mathfrakE statt zur Zeit t bei x das Ereignis mathfrakF zur Zeit t bei x das Ereignis mathfrakU statt und zur Zeit t bei x das Ereignis mathfrakN. Gib die Raum-Zeit-Abstände von Ereignis mathfrakE zu allen anderen Ereignissen sowohl im Bezugssystem von mathcalA als auch im Bezugssystem von mathcalB an welches sich mit einer halben Raum- pro ganze Zeit-Einheit in positive Richtung von mathcalA weg bewegt.
Solution:
center tikzpicturevect/.stylstealth' scope tkzInitxmax ymax tkzGridsub subxstep subystep tkzDefPoA tkzDefPoB tkzDefPoC tkzDefPoX tkzDefPoY tkzDefPo.Z tkzFctsub thin dashed black!!white domain:-+*x tkzFctsub thin dashed black!!white domain:-+*x tkzFctsub thin dashed black!!white domain:+*x tkzFctsub thin dashed black!!white domain:+*x tkzFctsub thin dashed black!!white domain:+*x tkzFctsub thin dashed black!!white domain:+*x tkzDrawSegmentsvect colorgreen!!black thickAB tkzDrawSegmentsvect colorgreen!!black thickAC tkzLabelSegmentbelow colorgreen!!blackAB sscxA tkzLabelSegmentleft colorgreen!!blackAC ssctA tkzDrawSegmentsvect colorgreen!!black thickXY tkzDrawSegmentsvect colorgreen!!black thickXZ tkzLabelSegmentbelow colorgreen!!blackXY sscxB tkzLabelSegmentleft colorgreen!!blackXZ ssctB tkzDefPoE tkzDefPoF tkzDefPoU tkzDefPoN tkzDrawPossizeF tkzLabelPoaboveFmathcalF tkzDrawPossizeE tkzLabelPobelow leftEmathcalE tkzDrawPossizeU tkzLabelPobelow rightUmathcalU tkzDrawPossizeN tkzLabelPoabove rightNmathcalN scope tikzpicture center Der Abstands-Vektor welcher die Ereignisse mathcalE und mathcalF trennt ist in den beiden Koordinatensystemen: sscSA ssctA + sscxA sscSB ssctB + . sscxB Der Abstands-Vektor welcher die Ereignisse mathcalE und mathcalU trennt ist in den beiden Koordinatensystemen: sscSA ssctA + sscxA sscSB ssctB -. sscxB Der Abstands-Vektor welcher die Ereignisse mathcalE und mathcalN trennt ist in den beiden Koordinatensystemen: sscSA ssctA + sscxA sscSB ssctB + sscxB
Im Bezugssystem von Beobachter mathcalA findet zur Zeit t bei x das Ereignis mathfrakE statt zur Zeit t bei x das Ereignis mathfrakF zur Zeit t bei x das Ereignis mathfrakU statt und zur Zeit t bei x das Ereignis mathfrakN. Gib die Raum-Zeit-Abstände von Ereignis mathfrakE zu allen anderen Ereignissen sowohl im Bezugssystem von mathcalA als auch im Bezugssystem von mathcalB an welches sich mit einer halben Raum- pro ganze Zeit-Einheit in positive Richtung von mathcalA weg bewegt.
Solution:
center tikzpicturevect/.stylstealth' scope tkzInitxmax ymax tkzGridsub subxstep subystep tkzDefPoA tkzDefPoB tkzDefPoC tkzDefPoX tkzDefPoY tkzDefPo.Z tkzFctsub thin dashed black!!white domain:-+*x tkzFctsub thin dashed black!!white domain:-+*x tkzFctsub thin dashed black!!white domain:+*x tkzFctsub thin dashed black!!white domain:+*x tkzFctsub thin dashed black!!white domain:+*x tkzFctsub thin dashed black!!white domain:+*x tkzDrawSegmentsvect colorgreen!!black thickAB tkzDrawSegmentsvect colorgreen!!black thickAC tkzLabelSegmentbelow colorgreen!!blackAB sscxA tkzLabelSegmentleft colorgreen!!blackAC ssctA tkzDrawSegmentsvect colorgreen!!black thickXY tkzDrawSegmentsvect colorgreen!!black thickXZ tkzLabelSegmentbelow colorgreen!!blackXY sscxB tkzLabelSegmentleft colorgreen!!blackXZ ssctB tkzDefPoE tkzDefPoF tkzDefPoU tkzDefPoN tkzDrawPossizeF tkzLabelPoaboveFmathcalF tkzDrawPossizeE tkzLabelPobelow leftEmathcalE tkzDrawPossizeU tkzLabelPobelow rightUmathcalU tkzDrawPossizeN tkzLabelPoabove rightNmathcalN scope tikzpicture center Der Abstands-Vektor welcher die Ereignisse mathcalE und mathcalF trennt ist in den beiden Koordinatensystemen: sscSA ssctA + sscxA sscSB ssctB + . sscxB Der Abstands-Vektor welcher die Ereignisse mathcalE und mathcalU trennt ist in den beiden Koordinatensystemen: sscSA ssctA + sscxA sscSB ssctB -. sscxB Der Abstands-Vektor welcher die Ereignisse mathcalE und mathcalN trennt ist in den beiden Koordinatensystemen: sscSA ssctA + sscxA sscSB ssctB + sscxB
Meta Information
Exercise:
Im Bezugssystem von Beobachter mathcalA findet zur Zeit t bei x das Ereignis mathfrakE statt zur Zeit t bei x das Ereignis mathfrakF zur Zeit t bei x das Ereignis mathfrakU statt und zur Zeit t bei x das Ereignis mathfrakN. Gib die Raum-Zeit-Abstände von Ereignis mathfrakE zu allen anderen Ereignissen sowohl im Bezugssystem von mathcalA als auch im Bezugssystem von mathcalB an welches sich mit einer halben Raum- pro ganze Zeit-Einheit in positive Richtung von mathcalA weg bewegt.
Solution:
center tikzpicturevect/.stylstealth' scope tkzInitxmax ymax tkzGridsub subxstep subystep tkzDefPoA tkzDefPoB tkzDefPoC tkzDefPoX tkzDefPoY tkzDefPo.Z tkzFctsub thin dashed black!!white domain:-+*x tkzFctsub thin dashed black!!white domain:-+*x tkzFctsub thin dashed black!!white domain:+*x tkzFctsub thin dashed black!!white domain:+*x tkzFctsub thin dashed black!!white domain:+*x tkzFctsub thin dashed black!!white domain:+*x tkzDrawSegmentsvect colorgreen!!black thickAB tkzDrawSegmentsvect colorgreen!!black thickAC tkzLabelSegmentbelow colorgreen!!blackAB sscxA tkzLabelSegmentleft colorgreen!!blackAC ssctA tkzDrawSegmentsvect colorgreen!!black thickXY tkzDrawSegmentsvect colorgreen!!black thickXZ tkzLabelSegmentbelow colorgreen!!blackXY sscxB tkzLabelSegmentleft colorgreen!!blackXZ ssctB tkzDefPoE tkzDefPoF tkzDefPoU tkzDefPoN tkzDrawPossizeF tkzLabelPoaboveFmathcalF tkzDrawPossizeE tkzLabelPobelow leftEmathcalE tkzDrawPossizeU tkzLabelPobelow rightUmathcalU tkzDrawPossizeN tkzLabelPoabove rightNmathcalN scope tikzpicture center Der Abstands-Vektor welcher die Ereignisse mathcalE und mathcalF trennt ist in den beiden Koordinatensystemen: sscSA ssctA + sscxA sscSB ssctB + . sscxB Der Abstands-Vektor welcher die Ereignisse mathcalE und mathcalU trennt ist in den beiden Koordinatensystemen: sscSA ssctA + sscxA sscSB ssctB -. sscxB Der Abstands-Vektor welcher die Ereignisse mathcalE und mathcalN trennt ist in den beiden Koordinatensystemen: sscSA ssctA + sscxA sscSB ssctB + sscxB
Im Bezugssystem von Beobachter mathcalA findet zur Zeit t bei x das Ereignis mathfrakE statt zur Zeit t bei x das Ereignis mathfrakF zur Zeit t bei x das Ereignis mathfrakU statt und zur Zeit t bei x das Ereignis mathfrakN. Gib die Raum-Zeit-Abstände von Ereignis mathfrakE zu allen anderen Ereignissen sowohl im Bezugssystem von mathcalA als auch im Bezugssystem von mathcalB an welches sich mit einer halben Raum- pro ganze Zeit-Einheit in positive Richtung von mathcalA weg bewegt.
Solution:
center tikzpicturevect/.stylstealth' scope tkzInitxmax ymax tkzGridsub subxstep subystep tkzDefPoA tkzDefPoB tkzDefPoC tkzDefPoX tkzDefPoY tkzDefPo.Z tkzFctsub thin dashed black!!white domain:-+*x tkzFctsub thin dashed black!!white domain:-+*x tkzFctsub thin dashed black!!white domain:+*x tkzFctsub thin dashed black!!white domain:+*x tkzFctsub thin dashed black!!white domain:+*x tkzFctsub thin dashed black!!white domain:+*x tkzDrawSegmentsvect colorgreen!!black thickAB tkzDrawSegmentsvect colorgreen!!black thickAC tkzLabelSegmentbelow colorgreen!!blackAB sscxA tkzLabelSegmentleft colorgreen!!blackAC ssctA tkzDrawSegmentsvect colorgreen!!black thickXY tkzDrawSegmentsvect colorgreen!!black thickXZ tkzLabelSegmentbelow colorgreen!!blackXY sscxB tkzLabelSegmentleft colorgreen!!blackXZ ssctB tkzDefPoE tkzDefPoF tkzDefPoU tkzDefPoN tkzDrawPossizeF tkzLabelPoaboveFmathcalF tkzDrawPossizeE tkzLabelPobelow leftEmathcalE tkzDrawPossizeU tkzLabelPobelow rightUmathcalU tkzDrawPossizeN tkzLabelPoabove rightNmathcalN scope tikzpicture center Der Abstands-Vektor welcher die Ereignisse mathcalE und mathcalF trennt ist in den beiden Koordinatensystemen: sscSA ssctA + sscxA sscSB ssctB + . sscxB Der Abstands-Vektor welcher die Ereignisse mathcalE und mathcalU trennt ist in den beiden Koordinatensystemen: sscSA ssctA + sscxA sscSB ssctB -. sscxB Der Abstands-Vektor welcher die Ereignisse mathcalE und mathcalN trennt ist in den beiden Koordinatensystemen: sscSA ssctA + sscxA sscSB ssctB + sscxB
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