KKW Beznau
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:
Zeit \(t\) / Masse \(m\) / Arbeit \(W\) / Energie \(E\) / Leistung \(P, \Phi\) / molare Masse \(M\) / Stoffmenge \(n\) / Anzahl \(N\) / Wirkungsgrad \(\eta\) /
The following formulas must be used to solve the exercise:
\(E = A \cdot (\hat E_{\rm B}' - \hat E_{\rm B}) \quad \) \(P = \dfrac{E}{t} = \dfrac{W}{t} = \dfrac{Q}{t} \quad \) \(m = nM \quad \) \(N = n \cdot N_{\rm A} \quad \) \(E = N \cdot E_1 \quad \) \(\eta = \dfrac{W_{\rm nutz}}{E_{\rm zu}} = \dfrac{P_{\rm nutz}}{P_{\rm zu}} \quad \)
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Exercise:
Die beiden Reaktorblöcke des Kernkraftwerkes Beznau speisen bei voller Leistung jeweils MW in das elektrische Netz; bei einem Wirkungsgrad von rund %. Wie lange könnte man dieses Kraftwerk mit .kmol Uran- betreiben falls die Spaltung von einen isotopeU-Kern eine Energie von MeV liefert?
Solution:
NewQtyP.eW NewQtye. NewQtyn.emol NewQtyO.J SolQtyNnX * ncNAn Geg P MW P eta % e n .kmol n Rightarrow N N E_ MeV O GesBetriebs-Dauer bzw. -Zeittsis Die Spaltung der angegebenen Stoff-Menge an Uran liefert SolQtyEnX * ncNAn * OXJ E N E_ N O E Energie. Damit das Kraftwerk die angegebene elektrische Leistung ins Netz einspeisen kann muss SolQtyPpPX/eXW P' fracPeta fracPe Pp thermische Leistung erzeugt werden. Diese kann mit der berechneten aus dem Uran gewonnen Energie für SolQtytEX/PpXs t fracEP' fracN E_fracPeta fraceta N E_P fracEPp t aufrecht erhalten werden. t fraceta N E_P t approx a
Die beiden Reaktorblöcke des Kernkraftwerkes Beznau speisen bei voller Leistung jeweils MW in das elektrische Netz; bei einem Wirkungsgrad von rund %. Wie lange könnte man dieses Kraftwerk mit .kmol Uran- betreiben falls die Spaltung von einen isotopeU-Kern eine Energie von MeV liefert?
Solution:
NewQtyP.eW NewQtye. NewQtyn.emol NewQtyO.J SolQtyNnX * ncNAn Geg P MW P eta % e n .kmol n Rightarrow N N E_ MeV O GesBetriebs-Dauer bzw. -Zeittsis Die Spaltung der angegebenen Stoff-Menge an Uran liefert SolQtyEnX * ncNAn * OXJ E N E_ N O E Energie. Damit das Kraftwerk die angegebene elektrische Leistung ins Netz einspeisen kann muss SolQtyPpPX/eXW P' fracPeta fracPe Pp thermische Leistung erzeugt werden. Diese kann mit der berechneten aus dem Uran gewonnen Energie für SolQtytEX/PpXs t fracEP' fracN E_fracPeta fraceta N E_P fracEPp t aufrecht erhalten werden. t fraceta N E_P t approx a
Meta Information
Exercise:
Die beiden Reaktorblöcke des Kernkraftwerkes Beznau speisen bei voller Leistung jeweils MW in das elektrische Netz; bei einem Wirkungsgrad von rund %. Wie lange könnte man dieses Kraftwerk mit .kmol Uran- betreiben falls die Spaltung von einen isotopeU-Kern eine Energie von MeV liefert?
Solution:
NewQtyP.eW NewQtye. NewQtyn.emol NewQtyO.J SolQtyNnX * ncNAn Geg P MW P eta % e n .kmol n Rightarrow N N E_ MeV O GesBetriebs-Dauer bzw. -Zeittsis Die Spaltung der angegebenen Stoff-Menge an Uran liefert SolQtyEnX * ncNAn * OXJ E N E_ N O E Energie. Damit das Kraftwerk die angegebene elektrische Leistung ins Netz einspeisen kann muss SolQtyPpPX/eXW P' fracPeta fracPe Pp thermische Leistung erzeugt werden. Diese kann mit der berechneten aus dem Uran gewonnen Energie für SolQtytEX/PpXs t fracEP' fracN E_fracPeta fraceta N E_P fracEPp t aufrecht erhalten werden. t fraceta N E_P t approx a
Die beiden Reaktorblöcke des Kernkraftwerkes Beznau speisen bei voller Leistung jeweils MW in das elektrische Netz; bei einem Wirkungsgrad von rund %. Wie lange könnte man dieses Kraftwerk mit .kmol Uran- betreiben falls die Spaltung von einen isotopeU-Kern eine Energie von MeV liefert?
Solution:
NewQtyP.eW NewQtye. NewQtyn.emol NewQtyO.J SolQtyNnX * ncNAn Geg P MW P eta % e n .kmol n Rightarrow N N E_ MeV O GesBetriebs-Dauer bzw. -Zeittsis Die Spaltung der angegebenen Stoff-Menge an Uran liefert SolQtyEnX * ncNAn * OXJ E N E_ N O E Energie. Damit das Kraftwerk die angegebene elektrische Leistung ins Netz einspeisen kann muss SolQtyPpPX/eXW P' fracPeta fracPe Pp thermische Leistung erzeugt werden. Diese kann mit der berechneten aus dem Uran gewonnen Energie für SolQtytEX/PpXs t fracEP' fracN E_fracPeta fraceta N E_P fracEPp t aufrecht erhalten werden. t fraceta N E_P t approx a
Contained in these collections
-
Energie aus Uran by TeXercises
| Title | Matched on |
|---|---|
| KKW Beznau | title |
| KKW Beznau | titleformula |
| Uranklumpen zu Hause | formula |
| Radioactive Energy from a Uranium Lump | formula |
| Energie einer Reaktorkern-Füllung | formula |
Similar exercises (11)
| Title | Matched on |
|---|---|
| KKW Beznau | title |
| KKW Beznau | titleformula |
| Uranklumpen zu Hause | formula |
| Radioactive Energy from a Uranium Lump | formula |
| Energie einer Reaktorkern-Füllung | formula |
| Energie aus Plutonium | formula |
| Abwärme eines Kernkraftwerkes | formula |
| Speicherkraftwerk | formula |
| Kernkraftwerk Leibstadt 2010 | tags |
| Kernkraftwerk | tags |
| Energie aus Plutonium | tags |