A dead alkaline battery is found to contain a compound on manganese and oxygen. The
compound's percent composition is 70.0% manganese and 30.0% oxygen. What is the
empirical formula?

explanation: it gains negative electrons, therefore becoming negatively charged. as charge cannot be created, nor destroyed, only transferred, this leaves the wool positive. now that they have opposite charges, the two items attract.

d.) circle motion requires a force to give it a centripetal acceleration.

thats a little if u want the answer just look it up on google thats what i do haha : )