donttrip10
08.11.2020 •
Physics
Aidez moi s’il vous plaît je bloque sur cette exercice :
Le trophée de la Coupe du
monde de football pèse 6,175 kg.
Il est en or 18 carats.
Donnée Pourcentage massique
d'or pur dans l'or 18
carats : 75 %
a. Calculer le nombre d'atomes d'or.
b. Calculer la quantité de matière
d'or correspondante.
Solved
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Ответ:
hmmm, where is the image?
but still let me tell you
Explanation:
amplitude of a wave is the maximum displacement of a particle from its rest position
so the arrow should be from the middle of the wave to the top of the crest or to the bottom trough,
from the middle
okay?
hope this helps, but be sure to add the image next time