FPT 2018 IPT connect | FPT 2018 Physics Fights Classement Problèmes Participants Jurés

9. Half-life sparkles

Sparks caused by an angle grinder tend to fly over a certain distance and then to split into several smaller sparks. What causes them to split? What is the condition for a split to occur? What influences the distance before the split? What will be the distance distribution of the sparks to fly?

Report Opposition
Aix-Marseille Université

6,20

CentraleSupélec

8,60

Grenoble Alpes Université

6,50

Sorbonne Université - ENS Ulm

5,40

Université Paris-Diderot

6,00

Université de Lyon - UCBL - ENS de Lyon

9,40

Université de Strasbourg

8,00

École Polytechnique

7,80

Moyenne

7,20

7,27