Suppose a force of 8 N east, a force of 12 N west, and a force of 4 N east acts on a moving object. Try sketching this example on a piece of scrap paper.

Use different colors to model the forces on the object.

What is the net force on the object?
N

Are the forces you modeled balanced or unbalanced? use correct spelling.

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.