While at the beach, you see someone standing in the water about to be wrecked by a wave. The low part of the swell is at their knees and the top of the incoming wave is 6 feet higher, above their head. What is the amplitude of the wave.

Ateacher gives students four liquids commonly found in the kitchen - vinegar, apple juice, dish detergent, and milk - and ph indicator strips, which measure acidity. the teacher asks the students to put the liquids in order from most acidic to most basic. what type of investigation could the students conduct to determine the correct order for the liquids?