In the united states, the electricity generated by hydropower is about
a. twice that generated by solar and geothermal.
b. equal to that generated using wind technologies.
c. twice as much as that generated by wind, solar, and geothermal.
d. equal to that generated using solar technologies.

Individuals who live below the poverty line get seriously ill more often than those who do not what could be the hidden variable in this situation?

When conducting an investigation to determine which type of fertilizer produces the most flowers on a plant, which variable would be graphed on the x-axis once you collected the data? a. type of fertilizer b. amount of flowers c. amount of water d. number of days that the plants grew

Four point charges each having charge q are located at the corners of a square having sides of length a. find symbolic expressions for the following. (a) the total electric potential at the center of the square due to the four charges (use any variable or symbol stated above along with the following as necessary: ke.) vtotal= (b) the work required to bring a fifth charge p from infinity to the center of the square (use any variable or symbol stated above along with the following as necessary: w=