Why is physics so difficult

How difficult is physics and how much time do you have to spend per week?

Hello Luca,
So good grades in physics and math are good prerequisites for studying physics. In the basic course all topics of physics are actually dealt with, mechanics, electrodynamics, thermodynamics and optics, quantum, particle, atomic, particle and solid-state physics. And of course, knowledge about electronics is also asked for in the internships, but mostly this does not go beyond knowledge of basic circuits. I don't mean to say that electronics are not important, but you can get along quite well without deepening your knowledge.
Of course, you will also encounter areas during your studies, no matter which, that you are not really interested in and, above all, that are really not fun, but in which understanding is elementary.
Unfortunately, I don't know to what extent you have already looked at and compared other courses of study, for example with physics, but in general I can always recommend attending lectures and experience reports from students in the field!
I guess that (almost) every course of study is time-consuming, especially if you are fresh out of school. Nevertheless, physics is already something special. As with many courses of study, a lot of work is required at the beginning of the course due to the exercise sheets to be worked on. In physics, this goes hand in hand with the intention of group work, which is a basic principle of the course. What is a great feature is that many topics are very complex and are deeply related to many other things, so that you sometimes only understand things correctly 1 year or more afterwards ... and holding out for that time is sometimes really difficult.
Exactly quantifying the workload in hours is difficult anyway, because it always depends on how easy or difficult it is for you, how much you think outside the box, etc. So I think an effective working time of 70 hours is exaggerated ... if Of course, if you sit in the library, rummage through videos and FB, and at the end of the day count your time spent there, that can work. Honestly, you've been busy all day, like a 40-hour week, but you can just as easily take a day off, lead a dissolute private life and divide your working hours relatively freely anyway.
In general, I can recommend studying physics, because in no other study you get such a deep understanding of nature and its laws and not only learn stupid formulas and use numbers in them, but also understand, among other things, how these formulas are derived, etc.
Hopefully I could help you a little, otherwise just keep asking.
Best wishes