Elastic force arises from deformation. The reason is the interaction of body molecules. At short distances, molecules repel, and at large distances, they attract. Without deformation, there is
We find how much hydrogen is released if sodium weighing 69g enters into a reaction with glycerin. First, we compose the reaction equations for this problem. 2 C3H5
On the mountainside, at an altitude of 1700m, the air temperature is -5. What is the air temperature at the foot of the mountain, located at an altitude