Aktivität von Mangan
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:
Aktivität \(A\) / Halbwertszeit \(T\) / Zerfallskonstante \(\lambda\) / Anzahl \(N\) /
The following formulas must be used to solve the exercise:
\(A = \lambda \cdot N \quad \) \(T = \dfrac{\ln 2}{\lambda} \quad \)
No explanation / solution video to this exercise has yet been created.
Visit our YouTube-Channel to see solutions to other exercises.
Don't forget to subscribe to our channel, like the videos and leave comments!
Visit our YouTube-Channel to see solutions to other exercises.
Don't forget to subscribe to our channel, like the videos and leave comments!
Exercise:
Wie viele Mangan-Isotope des Typs isotopeMn mit TO Halbwertszeit müssen vorliegen damit sie AO Aktivität aufweisen?
Solution:
N fracAlambda fracAfracln T fracTAln fracT Aln N approx NS n n approx nS nP-
Wie viele Mangan-Isotope des Typs isotopeMn mit TO Halbwertszeit müssen vorliegen damit sie AO Aktivität aufweisen?
Solution:
N fracAlambda fracAfracln T fracTAln fracT Aln N approx NS n n approx nS nP-
Meta Information
Exercise:
Wie viele Mangan-Isotope des Typs isotopeMn mit TO Halbwertszeit müssen vorliegen damit sie AO Aktivität aufweisen?
Solution:
N fracAlambda fracAfracln T fracTAln fracT Aln N approx NS n n approx nS nP-
Wie viele Mangan-Isotope des Typs isotopeMn mit TO Halbwertszeit müssen vorliegen damit sie AO Aktivität aufweisen?
Solution:
N fracAlambda fracAfracln T fracTAln fracT Aln N approx NS n n approx nS nP-
Contained in these collections
-
Momentane Aktivität by TeXercises
| Title | Matched on |
|---|---|
| Definition der Einheit Curie | formula |
| Anzahl Technetium-Isotope | tags |
| Radioaktives Präparat | tags |
| Aktivität von Arsen-Isotop | tags |
| Aktivität von Molybdän | tags |
Similar exercises (30)
| Title | Matched on |
|---|---|
| Definition der Einheit Curie | formula |
| Anzahl Technetium-Isotope | tags |
| Radioaktives Präparat | tags |
| Aktivität von Arsen-Isotop | tags |
| Aktivität von Molybdän | tags |
| Aktivität und Halbwertszeit | tags |
| Aktivität einer Silberfolie | tags |
| Ein Hundertstel | tags |
| Alter unserer Galaxie -- der Milchstrasse | formula |
| Aktivität einer Banane | tags |
| Aktivität von Polonium | tags |
| Halbwertszeit eines Präparates | tags |
| Anfangsaktivität von Polonium | tags |
| Aktivität von Technetium-Isotopen | tags |
| Top oder Flop | tags |
| Top oder Flop | tags |
| Aktivität von Tellur-Probe nach bestimmter Zeit | tags |
| $\beta$-Präparat | tags |
| Aktivität von Uran-Mineral nach bestimmter Zeit | tags |
| Kobalt | tags |
| Kobalt | tags |
| Zerfallsgesetz mit Halbwertszeit | tags |
| Halbwertszeit eines Stoffes | tags |
| Uran in Mineral | tags |
| Top oder Flop | tags |
| Halbwertszeit eines Stoffes | tags |
| Halbwertszeit aus Uran-Aktivität | tags |
| Materialprüfung | tags |
| Zerfälle in einem Uran-Kilogramm | tags |
| Zerfallskonstante von Radium | tags |