Physics

In this article learn about force of friction equation (or friction formula). This friction formula is very important while solving problems related to Newton’s laws of motion. You may also like to go to class 11 physics notes for more notes and study materials. Force of friction is a force which acts between two surfaces

Density of any substance is mass per unit volume. This concept is able to explain some phenomenan that occur around us. Learn about few density examples in this article. Density is a term that we use in our day to day life. The word density is not always used in a scientific sense the way

This article is only about thermal conductivity formula and its usage in solving various problems. I have discussed thermal conductivity in detail while writing notes in a separate page. Use the link given below to get to know more about it. Thermal Conductivity The thermal conductivity of a solid is a measure of the ability

Insulators have very wide forbidden energy gap nearly of the order of 5eV or more.
Because of this very high energy gap it becomes impossible for electrons present in valence band to cross the gap and reach to the conduction band and this makes electrical conduction a practical impossibility in insulators at room temperature.