12. How does the use of biomass energy to generate electricity harm the environment the most? A. Biomass energy production can destroy habitats.
B. Biomass energy production can create erosion problems.
C. Biomass energy production can contribute to air pollution.
D. Biomass energy production can generate hazardous waste.

A1-lb collar is attached to a spring and slides without friction along a circular rod in a vertical plane. the spring has an undeformed length of 5 in. and a constant k =25 lb/ft. knowing that the collar is released from being held at a determine, the speed of the collar and the normal force between the collar and the rod as the collar passes through b.