The speed of the pulse depends on what?​

Gunpowder residue is most likely to show up where on a shooters hands

Apebble is thrown into a calm lake, ripples are formed from the center and move outward. the water particles in the lake travel in a circular pattern that moves up and down on the surface of a lake, and the energy travels a) diagonally. b) downward. c) horizontally. d) upward.

Work = force × a. work b. energy c. distance d. momentum