What is the potential energy of a 3 kg-ball that is on the ground?

The potential energy is 0 because there is no distance form the floor to the ball

d) center of the mid-ocean ridge

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steckh986

the "power" of a lens is its resolution power, or its ability to distinguish between to closely located points. with the low power lens, it is likely you will see the rough form of the hay and maybe some movement of dots around the hay. however, when observed with the high power lens, the detailed features of the hay become visible and the microbes being grown are more clearly visible.

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