True or false (give explanations)
average acceleration is the slope of a velocity vs. time graph

Why is alternating current more effective at long–distance travel than direct current? a. the power lines are made out of conductors. b. transformers increase or decrease voltage as needed. c. the ac generator is more efficient. d. ac has lower voltage than dc.

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.

Transfer chemicals from one location to another to weather objects. a-water b-physical weathering c-chemical weathering