An elevator moves downwards at a constant speed. When drawing the free body diagram for this motion: the upwards tension force should be shorter than the downwards gravity force
the upwards tension force should be the same as the downwards gravity force
There is no upwards tension
the upwards tension force should be longer than the downwards gravity force

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?