Water waves crash in on the beach at a velocity of 3.5 m s . if the distance between the crest of each wave is 4 m, determine the frequency of the water waves. v = fλ.

a) 0.88 hz
b) 7.0 hz
c) 14.0 hz

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?