What is the purpose of zigzag line on a periodic table ?

In a given chemical reaction, the energy of the products is greater than the energy of the reactants. which statement is true for this reaction?

What will a positive and a negative charge do if they are separated from each other?

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.