Using the solubility curvechoose all of the statements that are correct

Which one of the following research methods can show cause and effect

This is the substance(s) formed in a chemical reaction.

Aturntable a is built into a stage for use in a theatrical production. it is observed during a rehearsal that a trunk b starts to slide on the turntable 10 s after the turntable begins to rotate. knowing that the trunk undergoes a constant tangential acceleration of 0.31 m/s2, determine the coefficient of static friction between the trunk and the turntable.