Put some water in a small metal tube. To increase the internal energy of the water, what methods can you use to describe your experiment?

Pull the rope to overcome friction and do work, that is, it consumes mechanical energy and generates internal energy, so it is a process of converting mechanical energy into internal energy. During the rising process of the plug, its mass remains unchanged and its speed decreases, so the kinetic energy becomes Small, while its mass remains unchanged and its height increases, the gravitational potential energy increases.

Water (chemical formula is H?O) is an inorganic substance composed of hydrogen and oxygen. It is non-toxic and drinkable. It is a colorless and odorless transparent liquid under normal temperature and pressure. It is called the source of human life and an important substance for sustaining life.

Water is one of the most common substances on earth. 71% of the earth's surface is covered by water. It is an important resource for the survival of all life, including inorganic compounds and humans, and is also the most important component of living organisms.

Pure water has very weak conductivity and is a very weak electrolyte. Water in daily life has more obvious conductivity because it has more anions and cations dissolved in other electrolytes.

Introduction

Water is an important resource for the survival of all life including inorganic compounds and humans, and it is also the most important component of living organisms.

Water is one of the most common substances on earth, with 71% of the earth’s surface covered by water. Although the content of water in the air is small, it is an important component of the air.

Pure water has very weak conductivity and is a very weak electrolyte. Water in daily life has more obvious conductivity because it has more anions and cations dissolved in other electrolytes.