During a race, a runner runs at a speed of 4 m/s. 4 seconds later she is running at a speed of 8 m/s. What is the runner's acceleration?

Why do cells appear different in distilled water than they do in 10% salt water?

Predict the reactants of this chemical reaction. that is, fill in the left side of the chemical equation. be sure the equation you submit is balanced. (you can edit both sides of the equation to balance it, if you need to.) note: you are writing the molecular, and not the net ionic equation. > cacl2(aq) + h20(l)

What is the equation fort the alkaline zinc/manganese dioxide cell. a) anode b)cathode c)overall equations.