Keisha is making a diagram of a simple machine in the body. A flexed arm has labels X for the hand, Z for the forearm, and Y for the elbow. Which labels complete the diagram? X: load Y: fulcrum Z: lever X: fulcrum Y: wedge Z: load X: wedge Y: fulcrum Z: load X: lever Y: load Z: fulcrum

Two charged particles, q1 and q2, are located on the x-axis, with q1 at the origin and q2 initially at x1 = 12.2 mm. in this configuration, q1 exerts a repulsive force of 2.62 µn on q2. particle q2 is then moved to x2 = 18.0 mm. what is the force (magnitude and direction) that q2 exerts on q1 at this new location? (give the magnitude in µn.)