What is the physical significance of ψ and ψ^(2)?

What is the physical significance of R?

The Arrhenius equation is given as k = A e^(-E_a//RT) . What do k, A and E stand for? What are their units for a first order reaction? What is the physical significance of A and E?

What is the physical significance of omega ?

Mention the physical significance of Psi and Psi^(2)

What is the physical significance of free energy?

What is the physical significance of free enegry?

What is the physical significance of moment of inertia ?

What is the physical significance of moment of inertia?