-7, Ses kaynağından çıkan ses dalgalarının bir yüzeye çarparak tekrar geri dönmesine yankı denir, Bu bilgi kullanılarak ses kaynağı ile engel arasındaki mesafeyi bulabilir miyiz? Açıklayiniz.

Fugu, also known as puffer fish, is a sushi delicacy that can also be lethal. puffer fish contain a powerful toxin that can kill an adult a few hours after ingestion. sushi chefs who prepare fugu must be specially trained because any contamination of the toxin-free areas of the fish can be deadly. recently this toxin has been put to good use, as scientists have discovered that a purified form of it can treat severe pain in cancer patients. this recent scientific discovery would fall under which area of chemistry? applied biochemistry pure organic chemistry pure physical chemistry applied inorganic chemistry

Iam in desperate need of with this !

Brainliesttt me asap! the below reaction can be categorized as more than one type of reaction. which reactions are these, and what are the types of reactions?