Sound Wave, Ripple in water, Guitar String, TV Signal, Which one does not belong? Why?

Asap! how do you lengthen a pattern piece? (family and consumer science, sewing)

Describe the difference between a. a hypothesis and a theory and b. an observation and an experiment.

Two nails have identical sizes and shapes. in one nail, 20 percent of the domains are lined up. in the other nail, 80 percent of the domains are lined up. which has stronger magnetic force? first answer gets brainliest!