Which property describes the amount of energy that flows past a given area per unit of time?

Intensity is defined as rate of energy per unit area.

Explanation:

As we know that intensity of wave is defined as the energy of wave passing through a given cross-section per unit time.

so it is defined as

we can also define it as power per unit area

so here we can solve it further and find that intensity is given as

so on increasing the intensity of wave, we will have more amplitude.

So the above property is defined as intensity.

grav force prop 1/r squared 2r all squared is 4rsquared 1/4rsquared quartered