The function of the respiratory system is to a) did the body of waste b) transport materials in the body c) break down food d) breathe

Idon’t quite understand this problem

Acar drives toward the right over the top of a hill, as shown below. which arrow represents the centripetal acceleration? w x y z

If you wanted to move an electron from the positive to the negative terminal of the battery, how much work w would you need to do on the electron? enter your answer numerically in joules.