The book “Methodological Instructions and Control Task No. 1 in the discipline of “Liquid and Gas Mechanics” is an indispensable assistant for students and teachers studying one of the most fascinating and complex areas of physics and engineering. Created by a team of authors, this work is a carefully structured and researched material that will help readers to better understand the basic principles of fluid and gas mechanics, as well as prepare for practical exercises and control works. In this edition you will find not only theoretical aspects, but also practical tasks that will help to consolidate the knowledge gained. The book covers key topics such as the laws of hydrostatics and hydrodynamics, the properties of liquids and gases, and their behavior under various conditions. Each task is accompanied by detailed methodological instructions, which makes the learning process more accessible and understandable. This is especially useful for students of technical specialties who strive not only for theoretical knowledge, but also for the practical application of the material studied. Who can like this book? First of all, it will be useful for university students studying in the areas of Mechanics, Engineering Physics, Hydraulics and other related disciplines . It may also be of interest to teachers who are looking for quality teaching materials for their courses. In addition, the book will be useful to graduate students and young professionals working in the field of mechanics and engineering who want to update their knowledge or prepare for exams. The topics raised in the book go beyond the simple study of formulas and theories. The authors emphasize the importance of understanding the physical processes occurring in liquids and gases and their impact on the world around them. This knowledge is necessary for the development of new technologies, the creation of effective systems and equipment, as well as for solving environmental problems associated with the use of water and air resources. The book highlights how fluid and gas mechanics permeate many aspects of our lives, from the design of buildings and bridges to the development of water and air purification systems. The style of the authors is distinguished by clarity and accessibility of the presentation, which makes the material easy to perceive. They seek not only to impart knowledge, but also to inspire readers to further study mechanics. This approach, based on a combination of theory and practice, makes the book particularly valuable. In it you will not only find the necessary knowledge, but also get the opportunity to apply them in practice, which will significantly increase your confidence in your abilities. If you are looking for high-quality training materials on fluid and gas mechanics, “Methodological Instructions and Control Task No. 1” is exactly what you need. This book will be your reliable companion in the world of physics and engineering, opening up new horizons of knowledge and opportunities for you. Do not miss the chance to immerse yourself in the fascinating world of mechanics that awaits you on the pages of this publication!