Brief rules to quickly understand the competition

Full rules Organizational regulations

These rules are only brief reminders. You can find the full version in the links above.

What is this
Fyziklani is a three-hour-long team competition taking place in Prague, Czech Republic.
Who can participate
The competition is held for 3 hours between teams of up to 5 high-schoolers, who attend two different high schools at most.
How does it work
At any instance, every team should have 7 tasks accessible. Solutions of the tasks should be written on the paper that states the problem and delivered to the judges. In the case of a correct solution, the team earns points and gets a new task straight away. In case of an incorrect solution, the team gets the task back to correct their answer.
Every problem solved on the first try is awarded 5 points, on the second try with 3 points, on the third try with 2 points and with 1 point otherwise.
How to get a new problem
The only way to get a new problem is to solve another one correctly; you can't skip problems. In an exceptional case the judge can ask how the team found the solution.
Form of the solutions
Solutions are accepted in standard form, i. e., with correct units. Fractions should be simplified. You should use constants like π and round the numbers correctly.
Allowed tools
It is allowed to use any written or printed materials. Electronic gadgets are strictly forbidden (except for calculators).