In science, bob learns that the energy of a wave is directly proportional to the square of the waves amplitude. if the energy of a wave is 4 j, what should he predict as the amplitude of the wave? a) 1 j b) 2 j c) 4 j d) 8 j

Jamuuj ExpertThe energy of a wave is directly proportional to the square of the waves amplitude. Therefore, E = A² where A is the amplitude. This therefore means when the amplitude of a wave is doubled the energy will be quadrupled, when the amplitude is tripled the energy increases by a nine fold and so on.Thus, in this case if the energy is 4J, then the amplitude will be  √4 = 2 .

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