Arock is projected from the edge of the top of a building with an initial velocity of 12.2 m/s at an angle of 53° above the horizontal. the rock strikes the ground a horizontal distance of 25 m from the base of the building. assume that the ground is level and that the side of the building is vertical. how tall is the building?

How many atoms of nitrogen are in the chemical formula ni(w on

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.

How is science controlled by the governerment