A person picking up a box from the ground
Explanation:
Work is defined as measure of energy transfer that occurs when an object is moved from one place to another by an external force at least part of which is applied in the direction of the displacement. Basically, work implies activity whether an activity done by body, of mind, of a machine, or of a natural force. In picking up a box from the ground there is no movement of person from one palce to another, hence no work done by him. Work is done only when he picks the box and moves from one point to another while carrying it.
I want to say it's the second one because the crest's of the wave are further apart then the rest.
Rmax = 4Hmax, that happen if the elevation of a projectile is 45°
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(Brainliest please!)