Plz do q no 9 both parts only

Asteady current of 1 ais flowing through a conducter calculate the number of electrons that flows through conductor in 1second

The respiratory system removes oxygen and water from the body. select the best answer from the choices provided t f

In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final