Energy

The modem mechanized civilization cannot proceed a moment without energy. Work is available at the expense of energy. Uninterrupted energy supply is essential for the…

The ability of a body to do work when its normal position or configuration is changed to some other position or configuration is called potential…

If a piece of stone or brick falls on a body from the roof of a building it may flatten or break the body. When…

Kinetic energy depends on the mass of object. The more is the mass the higher is the kinetic energy. With the same velocity a light…

We sometimes notice that cricket ball hits the stamp and strikes it down. If anything hard hits the glass window the glass breaks down. If…

In the Lindemann chemical kinetic treatment of the isomerization of molecule A to its isomer B, as in the isomerization reaction of cyclopropane to propene,…

Chemical spectroscopy and analytical chemistry use light of various types not just visible light but also other regions of the electromagnetic spectrum. The quantum mechanics…

The equation P = – ΔW/ΔV can be interpreted as the work necessary to “create” volume. Likewise, work is necessary to create surface area ΔA,…

The density of an object is defined as the ratio of mass in divided by its volume, P = m/V The unit of density is…

Example 1: A block with mass in = 0.76 kg is attached to a spring hanging from the ceiling so that the spring stretched by…