While closing a door of mass 10 kg, a student pushes on it with a force of 25 N. As the door is accelerating to close, what force does the door exert on the student?

A.5n
b.25n
c.250n
d.35n

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?