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What is bulk modulus and what is youngs modulus give example

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What is bulk modulus and what is youngs modulus give example

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Solution

Bulk Modulus:

Bulk modulus is a measure of a substance's resistance to uniform compression. It is defined as the ratio of the infinitesimal pressure increase to the resulting relative decrease of the volume. Its SI unit is Pascal (Pa).

For example, the bulk modulus of water is about 2.2 GPa. This means that it takes a lot of pressure to compress water even a little bit.

Young's Modulus:

Young's modulus (also known as the modulus of elasticity) is a measure of the stiffness of a solid material. It defines the relationship between stress (force per unit area) and strain (proportional deformation) in a material. Its SI unit is also Pascal (Pa).

For example, the Young's modulus of steel is about 200 GPa. This means that steel is a very stiff material, it does not deform easily when a force is applied to it.

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