Which wave above carries the greatest energy? Explain how you know

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What are the 4 phases of matter in order of increasing engery content?

Stage in which a typical star has completely stopped fusion

The bond energy for the van der waals bond between two helium atoms is 7.9×10−4ev. assuming that the average kinetic energy of a helium atom is (3/2)kbt, at what temperature is the average kinetic energy equal to the bond energy between two helium atoms