a person walks 57m, 47° north of east, turns then walks72m, 15 degrees south of east and turns and walks 24 m, 30° west of north . How far and at what angle is the final position from initial position?​

Hydroelectricity provides about 7 percent of the electricity generated in the united states. (a) explain how a hydroelectric power plant converts energy stored in water into electricity. (b) identify two factors that determine the amount of electricity that can be generated by an individual hydroelectricity power plant. (c) describe the two main types of land-based hydroelectric power plants. (d) describe two economic advantages and two environmental disadvantages of hydroelectricity.