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Steigdauer einer Cessna

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".
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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 -

Exercise

https://texercises.com/exercise/steigdauer-einer-cessna/

Question

Solution

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The following quantities appear in the problem: Zeit \(t\) / Masse \(m\) / Arbeit \(W\) / Energie \(E\) / Leistung \(P\) / Ortsfaktor \(g\) / Höhe \(h\) /

The following formulas must be used to solve the exercise: \(E_{\rm \scriptscriptstyle kin} = \dfrac12 mv^2 \quad \) \(P = \dfrac{E}{t} = \dfrac{W}{t} \quad \) \(E_{\rm \scriptscriptstyle pot} = mgh \quad \)

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Exercise:
Ein Flugzeug des Types Cessna m steige auf eine Flughöhe von h wo es eine Fluggeschwindigkeit von v hält. Wie lange hat dieser Steigflug mindestens gedauert falls von einer durchschnittlichen Leistung von P ausgegangen werden kann?

Solution:
Geg m m mC h h hC v v vC P P PC GesZeitdauert sis Im Endzustand hat das Flugzeug des Typs Cessna folge Bewegungs- bzw. kinetische Energie: Ekin Ekf frac mC qtyvC^ Ek. Ausserdem das Flugzeug aufgrund seiner Höhe / Lage über dem Erdboden folge potentielle Energie die der Hubarbeit entspricht welche nötig ist um das Flugzeug auf diese Höhe zu bringen: Epot Epf mC ncg hC Ep Zusammen sind das E Ekin + Epot Ekf + Epf Ek + Ep Et. Die minimal nötige Steigzeit beträgt also: t fracEP fracmgh + fracmv^P fracm leftgh + fracv^rightP fracEtPC t t fracm leftgh + fracv^rightP t tCII

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Jagdflugzeug by TeXercises

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Attributes & Decorations

Branches	Work, Energy, Power
Tags	cessna, energie, flugzeug, kinetische energie, leistung, mechanik, physik, potentielle energie, ps, triebwerk, zeit
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Difficulty	(3, default)
Points	3 (default)
Language	(Deutsch)
Type	Calculative / Quantity
Creator	uz
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