3 All of the following describe uses of renewable energy sources except:
ОА.
burning animal wastes to run turbines and generators
ОВ.
using solar cells to heat water for use in homes
Ос.
creating electricity from energy in the nucleus of atoms
OD.
turning turbines with water held behind dams
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An incident ray through the focal point of a spherical mirror will: reflect through the center of curvature. reflect back through the focal point. reflect parallel to the principle axis. reflect the same direction as the incident ray.

Smallest intensity of a stimulus that you can detect 50 percent of the time is

Choose the correct general statement concerning the total potential and kinetic energy at any point along the arc of swing. the total energy at any point along the arc of swing of the pendulum is always less than 12 joules. the total energy at any point along the arc of swing of the pendulum is always more than 12 joules. the total energy at any point along the arc of swing of the pendulum is always equal to 12 joules. not enough information to determine