Physics

A group of atoms bonded together, representing the smallest fundamental unit of a chemical compound that can take part in a chemical reaction.

The maximum extent to which a solid may be stretched without permanent alteration of size or shape is called limit of elasticity or elastic limit.

The relative change in length or shape which is made by applying a force from outside is called strain.  Strain is simply the measure of how much an object is stretched or deformed. Strain occurs when force is applied to an object. Strain deals mostly with the change in length of the object. An example … Read more

Bulk modulus is termed as the proportion of volumetric stress released to the volumetric strain of a specific material, while the material deformation is within the elastic limit.

The amount of heat required to change the state of matter completely is known as latent heat. The heat required to transform the solid into liquid is the latent heat of fusion and heat required to convert the liquid into vapor is the latent heat of vaporization.

The amount of sound energy that flows per second per unit area is called the intensity of sound.

The specific heat is the amount of heat per unit mass required to raise the temperature by one degree Celsius.

The pressure exerted vertically by the weight of the atmosphere per unit area of the earth is called the atmospheric pressure of that area.