The density, rho, of sea-water is 1.2 × 103 kg m−3. using the expression wave power equation, estimate the gravitational power per metre length available in a wave of height 0.60 m.

E = 529.2 Joules

Explanation:

The gravitational power can be calculated as:

               Where ρ: Sea- water density

                           A: is the amplitude of the wave (that is to say half its height H)

                           g: the gravitational acceleration

Then

E = 529.2 Joules

it has to be b, about 97 percent.

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from wikipedia