Kerosin im Flugzeugtriebwerk
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 \(P, \Phi\) / Volumen \(V\) / Heizwert \(H\) / Dichte \(\varrho\) / Verhältnis / Anteil \(\eta\) /
The following formulas must be used to solve the exercise:
\(\eta = \dfrac{a}{A} \quad \) \(\varrho = \dfrac{m}{V} \quad \) \(E = m \cdot H \quad \) \(P = \dfrac{E}{t} = \dfrac{W}{t} = \dfrac{Q}{t} \quad \)
Exercise:
Ein Flugzeugtriebwerk verbrennt bei Volllast pro Minute liter Kerosin mit einem Brennwert von .megajouleperkilogram und einer Dichte von milligrampercubiccentimeter. Berechne die Antriebsleistung eines Triebwerkes falls es einen Wirkungsgrad von % hat.
Solution:
newqtyto.min newqtyts newqtyVoliter newqtyVVon cubicmeter newqtyHo.megajouleperkilogram newqtyHHon eJpkg newqtyRomilligrampercubiccentimeter newqtyRRonkgpcm newqtyetopercent newqtyeteton % Geg t to t V Vo V H Ho H rho Ro R eta eto et % GesAntriebs-LeistungPnutz siW % Die Masse des in to verbrannten Kerosins ist solqtymrho VRn*Vnkg al m mf RV m. % Die daraus erzeugte Wärmemenge beträgt solqtyQrho V Hmn*HnJ al Q m H Qf m H Q. % Die Wärmeleistung ist dann solqtyPzfracQftQn/tnW al Pzu fracQt Pzf fracQt Pz. % Bei einem Wirkungsgrad von eto ist die Antriebsleistung folglich solqtyPnfracetaQftetn*PznW al Pnutz eta Pzu Pnf etPz Pn. % Pnutz Pnf PnII
Ein Flugzeugtriebwerk verbrennt bei Volllast pro Minute liter Kerosin mit einem Brennwert von .megajouleperkilogram und einer Dichte von milligrampercubiccentimeter. Berechne die Antriebsleistung eines Triebwerkes falls es einen Wirkungsgrad von % hat.
Solution:
newqtyto.min newqtyts newqtyVoliter newqtyVVon cubicmeter newqtyHo.megajouleperkilogram newqtyHHon eJpkg newqtyRomilligrampercubiccentimeter newqtyRRonkgpcm newqtyetopercent newqtyeteton % Geg t to t V Vo V H Ho H rho Ro R eta eto et % GesAntriebs-LeistungPnutz siW % Die Masse des in to verbrannten Kerosins ist solqtymrho VRn*Vnkg al m mf RV m. % Die daraus erzeugte Wärmemenge beträgt solqtyQrho V Hmn*HnJ al Q m H Qf m H Q. % Die Wärmeleistung ist dann solqtyPzfracQftQn/tnW al Pzu fracQt Pzf fracQt Pz. % Bei einem Wirkungsgrad von eto ist die Antriebsleistung folglich solqtyPnfracetaQftetn*PznW al Pnutz eta Pzu Pnf etPz Pn. % Pnutz Pnf PnII
Meta Information
Exercise:
Ein Flugzeugtriebwerk verbrennt bei Volllast pro Minute liter Kerosin mit einem Brennwert von .megajouleperkilogram und einer Dichte von milligrampercubiccentimeter. Berechne die Antriebsleistung eines Triebwerkes falls es einen Wirkungsgrad von % hat.
Solution:
newqtyto.min newqtyts newqtyVoliter newqtyVVon cubicmeter newqtyHo.megajouleperkilogram newqtyHHon eJpkg newqtyRomilligrampercubiccentimeter newqtyRRonkgpcm newqtyetopercent newqtyeteton % Geg t to t V Vo V H Ho H rho Ro R eta eto et % GesAntriebs-LeistungPnutz siW % Die Masse des in to verbrannten Kerosins ist solqtymrho VRn*Vnkg al m mf RV m. % Die daraus erzeugte Wärmemenge beträgt solqtyQrho V Hmn*HnJ al Q m H Qf m H Q. % Die Wärmeleistung ist dann solqtyPzfracQftQn/tnW al Pzu fracQt Pzf fracQt Pz. % Bei einem Wirkungsgrad von eto ist die Antriebsleistung folglich solqtyPnfracetaQftetn*PznW al Pnutz eta Pzu Pnf etPz Pn. % Pnutz Pnf PnII
Ein Flugzeugtriebwerk verbrennt bei Volllast pro Minute liter Kerosin mit einem Brennwert von .megajouleperkilogram und einer Dichte von milligrampercubiccentimeter. Berechne die Antriebsleistung eines Triebwerkes falls es einen Wirkungsgrad von % hat.
Solution:
newqtyto.min newqtyts newqtyVoliter newqtyVVon cubicmeter newqtyHo.megajouleperkilogram newqtyHHon eJpkg newqtyRomilligrampercubiccentimeter newqtyRRonkgpcm newqtyetopercent newqtyeteton % Geg t to t V Vo V H Ho H rho Ro R eta eto et % GesAntriebs-LeistungPnutz siW % Die Masse des in to verbrannten Kerosins ist solqtymrho VRn*Vnkg al m mf RV m. % Die daraus erzeugte Wärmemenge beträgt solqtyQrho V Hmn*HnJ al Q m H Qf m H Q. % Die Wärmeleistung ist dann solqtyPzfracQftQn/tnW al Pzu fracQt Pzf fracQt Pz. % Bei einem Wirkungsgrad von eto ist die Antriebsleistung folglich solqtyPnfracetaQftetn*PznW al Pnutz eta Pzu Pnf etPz Pn. % Pnutz Pnf PnII
Contained in these collections
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Heizwert Leistung Wirkungsgrad Dichte by TeXercises
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Wärmearbeitsmaschine by pw
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Wärmearbeitsmaschine 1 by uz
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Wärmemaschinen by ha
| Title | Matched on |
|---|---|
| Benzinmotor | formula |
| Kerosinverbrauch eines Flugzeugtriebwerks | tags |
| Wirkungsgrade von Verbrennungsmaschinen | tags |
| Wärmearbeitmaschine | tags |
| Wirkungsgrad einer Erdgasanlage | tags |
Physical Quantity
Leistung \(P, \Phi\)
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Arbeit bzw. Energie pro Zeit
Unit
Watt (\(\rm W\))
One of the 22 official SI units.
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Similar exercises (11)
| Title | Matched on |
|---|---|
| Benzinmotor | formula |
| Kerosinverbrauch eines Flugzeugtriebwerks | tags |
| Wirkungsgrade von Verbrennungsmaschinen | tags |
| Wärmearbeitmaschine | tags |
| Wirkungsgrad einer Erdgasanlage | tags |
| Erdgasanlage | tags |
| Erdgasanlage | tags |
| Erdgasanlage | tags |
| Erdgasanlage | tags |
| Verbrauch von Benzinmotor | tags |
| Theoretische Maschine | tags |