What letter do you give peaks that are overlapping or undistinguishable?

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.

According to the law of conservation of mass, in a chemical reaction the total starting mass of all the reactants equal the total final mass of all the products. true or false?

The graph describes the motion of an object. the object moves with from a to b. it from b to c. it moves with from c to d.