You start this journey at your desk, by walking 5 m in the north direction to the front of the class, 21 m in the south direction to the water fountain, and then you retrace your steps back to your desk. Calculate your displacement.

How can waves travel through ground?

What quantity do units represent in value

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.