Wasser mischen
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
Short
Video
\(\LaTeX\)
Need help? Yes, please!
The following quantities appear in the problem:
Länge \(\ell\) / Masse \(m\) / Temperatur \(T\) / Volumen \(V\) / Wärme \(Q\) / Höhe \(h\) / Wärmekapazität \(c\) / Breite \(b\) /
The following formulas must be used to solve the exercise:
\(Q = c \cdot m \cdot \Delta\vartheta \quad \) \(V = abc \quad \) \(\sum Q^\nearrow \stackrel{!}{=} \sum Q^\swarrow \quad \)
Exercise:
Wie viel Wasser bei degreeCelsius und wie viel bei degreeCelsius ist zu mischen um kg Wasser bei degreeCelsius zu erhalten?
Solution:
NewQtyTecelsius NewQtyTzcelsius NewQtyTcelsius NewQtymkg % unknownsscm % Wir stellen die Wärmebilanz auf und verwen dass die Summe der beiden gesuchten Massen sscm und sscm die Gesamtmasse des Gemischs sscmtot geben muss d.h. sscm + sscm sscmtot implies sscm sscmtot - sscm. % SolQtymefracsscmtotssctheta - theta^*ssctheta- ssctheta mX*TzX-TX/TzX-TeXkg SolQtymzfracsscmtotssctheta - theta^*ssctheta- ssctheta mX*TeX-TX/TeX-TzXkg % WaermeSchritte PGleichungQzu &mustbe Qnutz PGleichungsscQ sscQ PGleichungc uk Deltassctheta c sscm Deltassctheta PGleichunguk theta^*-ssctheta sscmtot-uk ssctheta - theta^* % AlgebraSchritte MGleichunguk theta^*-ssctheta sscmtotssctheta - theta^*-uk ssctheta - theta^* MGleichunguk theta^*-ssctheta + uk ssctheta - theta^* sscmtotssctheta - theta^* MGleichunguk ssctheta-ssctheta sscmtotssctheta - theta^* MGleichunguk meF % PHYSMATH % Die erste Masse beträgt somit al sscm meF fracm qtyTz - TTz - Te meP. Aus Symmetriegründen können wir für die zweite Masse überall die Indizes und miteinander vertauschen oder einfach die Differenz zur Gesamtmasse nehmen: al sscm mzF fracm qtyTe - TTe - Tz mzP.
Wie viel Wasser bei degreeCelsius und wie viel bei degreeCelsius ist zu mischen um kg Wasser bei degreeCelsius zu erhalten?
Solution:
NewQtyTecelsius NewQtyTzcelsius NewQtyTcelsius NewQtymkg % unknownsscm % Wir stellen die Wärmebilanz auf und verwen dass die Summe der beiden gesuchten Massen sscm und sscm die Gesamtmasse des Gemischs sscmtot geben muss d.h. sscm + sscm sscmtot implies sscm sscmtot - sscm. % SolQtymefracsscmtotssctheta - theta^*ssctheta- ssctheta mX*TzX-TX/TzX-TeXkg SolQtymzfracsscmtotssctheta - theta^*ssctheta- ssctheta mX*TeX-TX/TeX-TzXkg % WaermeSchritte PGleichungQzu &mustbe Qnutz PGleichungsscQ sscQ PGleichungc uk Deltassctheta c sscm Deltassctheta PGleichunguk theta^*-ssctheta sscmtot-uk ssctheta - theta^* % AlgebraSchritte MGleichunguk theta^*-ssctheta sscmtotssctheta - theta^*-uk ssctheta - theta^* MGleichunguk theta^*-ssctheta + uk ssctheta - theta^* sscmtotssctheta - theta^* MGleichunguk ssctheta-ssctheta sscmtotssctheta - theta^* MGleichunguk meF % PHYSMATH % Die erste Masse beträgt somit al sscm meF fracm qtyTz - TTz - Te meP. Aus Symmetriegründen können wir für die zweite Masse überall die Indizes und miteinander vertauschen oder einfach die Differenz zur Gesamtmasse nehmen: al sscm mzF fracm qtyTe - TTe - Tz mzP.
Meta Information
Exercise:
Wie viel Wasser bei degreeCelsius und wie viel bei degreeCelsius ist zu mischen um kg Wasser bei degreeCelsius zu erhalten?
Solution:
NewQtyTecelsius NewQtyTzcelsius NewQtyTcelsius NewQtymkg % unknownsscm % Wir stellen die Wärmebilanz auf und verwen dass die Summe der beiden gesuchten Massen sscm und sscm die Gesamtmasse des Gemischs sscmtot geben muss d.h. sscm + sscm sscmtot implies sscm sscmtot - sscm. % SolQtymefracsscmtotssctheta - theta^*ssctheta- ssctheta mX*TzX-TX/TzX-TeXkg SolQtymzfracsscmtotssctheta - theta^*ssctheta- ssctheta mX*TeX-TX/TeX-TzXkg % WaermeSchritte PGleichungQzu &mustbe Qnutz PGleichungsscQ sscQ PGleichungc uk Deltassctheta c sscm Deltassctheta PGleichunguk theta^*-ssctheta sscmtot-uk ssctheta - theta^* % AlgebraSchritte MGleichunguk theta^*-ssctheta sscmtotssctheta - theta^*-uk ssctheta - theta^* MGleichunguk theta^*-ssctheta + uk ssctheta - theta^* sscmtotssctheta - theta^* MGleichunguk ssctheta-ssctheta sscmtotssctheta - theta^* MGleichunguk meF % PHYSMATH % Die erste Masse beträgt somit al sscm meF fracm qtyTz - TTz - Te meP. Aus Symmetriegründen können wir für die zweite Masse überall die Indizes und miteinander vertauschen oder einfach die Differenz zur Gesamtmasse nehmen: al sscm mzF fracm qtyTe - TTe - Tz mzP.
Wie viel Wasser bei degreeCelsius und wie viel bei degreeCelsius ist zu mischen um kg Wasser bei degreeCelsius zu erhalten?
Solution:
NewQtyTecelsius NewQtyTzcelsius NewQtyTcelsius NewQtymkg % unknownsscm % Wir stellen die Wärmebilanz auf und verwen dass die Summe der beiden gesuchten Massen sscm und sscm die Gesamtmasse des Gemischs sscmtot geben muss d.h. sscm + sscm sscmtot implies sscm sscmtot - sscm. % SolQtymefracsscmtotssctheta - theta^*ssctheta- ssctheta mX*TzX-TX/TzX-TeXkg SolQtymzfracsscmtotssctheta - theta^*ssctheta- ssctheta mX*TeX-TX/TeX-TzXkg % WaermeSchritte PGleichungQzu &mustbe Qnutz PGleichungsscQ sscQ PGleichungc uk Deltassctheta c sscm Deltassctheta PGleichunguk theta^*-ssctheta sscmtot-uk ssctheta - theta^* % AlgebraSchritte MGleichunguk theta^*-ssctheta sscmtotssctheta - theta^*-uk ssctheta - theta^* MGleichunguk theta^*-ssctheta + uk ssctheta - theta^* sscmtotssctheta - theta^* MGleichunguk ssctheta-ssctheta sscmtotssctheta - theta^* MGleichunguk meF % PHYSMATH % Die erste Masse beträgt somit al sscm meF fracm qtyTz - TTz - Te meP. Aus Symmetriegründen können wir für die zweite Masse überall die Indizes und miteinander vertauschen oder einfach die Differenz zur Gesamtmasse nehmen: al sscm mzF fracm qtyTe - TTe - Tz mzP.
Contained in these collections
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Kalorik 2 by uz
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Kalorik mischen - 2Q 2c GlSyst by TeXercises
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Wärmeenergie by pw
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|---|---|
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| Zwei Becher mit Wasser | tagsformula |
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