Шарик на нити за 5 с совершил 10 полных колебаний. Чему равны период и частота колебаний?

The Wolf.
If you look at a wolf in the Zoo, you may think that it's a dog. Yes, the wolf looks like a dog, but it is not man's friend as the dog is. The wolf is a wild animal. It feeds on deer, sheep, goats, hares and other animals. Wolves work in teams to hunt large animals. Scientists who study the life of wolves think they are very interesting and intelligent animals. They live in packs (in groups that count from four to twenty wolves) and have a language of sounds, movements and looks. There are two leaders in the pack - a male and female. They keep order. The other wolves living in the pack are their children. Even the grown children stay with the parents and follow the rules. Wolves are very good parents. All the wolves in a pack help take care of the cubs. Wolves live in many parts of the world.