Materials used table or desk
drum and drumsticks
laser pen
clothespin or binder clip (optional
lab stand and clamp
mirror or felxiable mirror
tape
large rock about 8 cm across
smaller rock
video camera to record(slow minton optional
graph paper
masking tape

In a ni-cd battery, a fully charged cell is composed of nickelic hydroxide. nickel is an element that has multiple oxidation states. assume the following proportions of the states: nickel charge proportions found 0 0.17 +2 0.3 +3 0.33 +4 0.5 (a) determine the mean of the nickel charge. enter the answer to 2 decimal places.(b) determine the cumulative distribution function of nickel charge.