Bonjour , aidez -moi s'il vous plaît , j' ai besoin de votre aide pour mon exercice de physique chimie .
Voici l'énoncé , il est en anglais donc j' ai un peu du mal à comprendre :
The Earth turns around the Sun in 365.25 days . It descibes a practically circular orbit whose radius is 150 000 000 km .
1) Calculate the covered distance by the Earth in one year .
2) Calculate the speed ( in km/s ) at wich the Earth moves along ots orbit .
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