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Cancer patient

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.

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/cancer-patient/

Question

Solution

Short

Video

\(\LaTeX\)

Need help? Yes, please!

The following quantities appear in the problem: Masse \(m\) / Energie \(E\) / Äquivalentdosis \(H\) / Anzahl \(N\) / Energiedosis \(D\) /

The following formulas must be used to solve the exercise: \(D = \dfrac{E}{m} \quad \) \(E = N \cdot E_1 \quad \) \(H = qD \quad \)

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In case your browser prevents YouTube embedding: https://youtu.be/R-nLGW3v8eM

Exercise:
A cancer patient is undergoing radiation therapy in which protons with an energy of Eo are incident on a m tumor. If the patient receives an effective dose of H how many protons with relative biological effectiveness q are absorbed by the tumor?

Solution:
Geg E_ Eo EoC m m mC H H HC q q GesNumber of protonsNsi If the effective dose H of mSv originates from protons q then the absorbed dose D is solqtyDHCn/qnGy D fracHq fracHCq D If the whole dose is absorbed by the tumor with mass m the total absorbed energy is solqtyEmCn * DnJ convtoeV/.E convtoMeVEC E m D m fracHq mC D E EC ECC This corresponds to solnumNECCn/Eon N fracEE_ fracm fracHqE_ fracmHqE_ fracECCEo N absorbed protons. N fracmHqE_ N

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Contained in these collections:

Dosimetrie I by pw

4 | 8
Organdosis, Energiedosis und Einzelenergie by TeXercises

1 | 3
Dosimetrie 1 by uz

7 | 10
Dosimetrie by aej

4 | 11

Attributes & Decorations

Branches	Work, Energy, Power
Tags	body, cancer, dose, energy, gamma, gray, human, lethal, mev, nuclear, patient, physics, qf, radiation, radioactivity, ray, sievert
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Difficulty	(3, default)
Points	3 (default)
Language	(English)
Type	Calculative / Quantity
Creator	uz
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