PLS HELP The drawing canvas shows one layer of iron atoms. It also shows one atom in a second layer. Extend the model by drawing three more atoms in the second layer. Then draw a third layer with nine more atoms. Once you draw one atom like the ones shown, you can use the copy and paste buttons in the drawing tool.

Suppose you use a machine that gives you a mechanical advantage of 2 to achieve an output force of 30newtons what must the input force be

Ared apple is illuminated by a blue light the apple will appear

A1-lb collar is attached to a spring and slides without friction along a circular rod in a vertical plane. the spring has an undeformed length of 5 in. and a constant k =25 lb/ft. knowing that the collar is released from being held at a determine, the speed of the collar and the normal force between the collar and the rod as the collar passes through b.