What is the minimum velocity required to obtain useful energy with a windmill?

What is the minimum charge observed in nature?

In a hydrogen atom, the electron and proton are bound at a distance of about 0.53 A. (a) Estimate the potential energy of the system in eV, taking the zero of the potential energy at infinite separation of the electron from proton. (b) What is the minimum work required to free the electron, given that its kinetic energy in the orbit is half the magnitude of potential energy obtained in (a)?

In a hydrogen atom, the electron and proton are bound at a distance of about 0.53 A: (a) Estimate the potential energy of the system in eV, if the zero of potential energy is taken at 1.06 overset @A separation of the electron from proton? (b) What is the minimum work required to free the electron, given that its kinetic energy in the orbit is half the magnitude of potential energy obtained in (a)?

List the common reactions required to obtained energy from carbon based molecules?

What is the basic requirement of maintenance?

What are the materials required for life ?

What is the minimum and maximum temperature on moon ?

What is the maximum and minimum value of dip?

What should be the change in velocity of a body required to increase its kinetic ? energy to four times of its initial value ?