"To do it in 45 minutes" is quite a relevant slogan for the modern school. New educational standards set rather high requirements for conducting classes. Increasing the independence of the student, activity approach, creative techniques, changing the position of the teacher. All these are characteristic features of the modern lesson in accordance with the new typology of the Federal State Educational Standard
In nature, there are a large number of a wide variety of forces that affect objects and the environment. Each of them has its own unique nature and has a certain impact on the environment. To study and measure such an impact, the term "physical quantity" was introduced














