Two illustrations of transverse waves. The one with shorter crests is labeled A. The wave with taller crests is labeled B. Which wave, A or B, has higher energy? A, because it has a higher amplitude B, because it has a higher amplitude A, because it has a lower amplitude B, because it has a lower amplitude.

Ais useful when you need a simple machine to you separate two things. a. lever b. screw c. pulley d. wedge

How is sound energy produced a. vibrating objects b. objects being heated c. temperature differences d. stationary objects

I'm thinking it's 2 you are asked to explain the earth's magnetic field. which is the best reply? 1. the earth's magnetic south is similar to the north pole of a magnet. 2. the earth's core has a strong magnetic charge similar to the south pole of a magnet. 3. the earth's geomagnetic south is similar to the south pole of a magnet. 4. the earth's magnetic charge is not centered at either pole; it varies based on location.