Does the co-efficient of linear expansion depend on the scale of temperature and unit of length?

Define the co-efficient of restitution.

What is the unit of co-efficient of linear expansion.

Define coefficient of real expansion and coeffieicnet of apparent expansion of liquid. Establish the relation between them.

Define co-efficient of linear,superficial and volume expansions.

Define co-efficient of friction. On what factors does it depend?

A metal bar of length L area of cross section A, Young's modulus Y and coefficient of linear expansion a is clamped between two stout pillars. What is the force exerted by the bar when it is heated through t ^@C ?

A metal and is heated till its length becomes twice of its original length. If coefficient of linear exansion of the material of the rod is alpha , then what is the change in temperature?

Define specific heat of substance.Does it depend on pressure?

Define a melting point.Does it depend on pressure?