=PLEASE ANSWER= a) What energy photon is released when an electron transitions from n=4 state to an n=2 state?
b) list all the photons that could possibly be released as an electron moves from the second excited (n=3) state to ground state

Aperson walking 1 mile everyday for exercise, leaving her front porch at 9: 00 am and returning to her front porch at 9: 25 am. what is the total displacement of her daily walk? a) 1 mileb) 0c) 25 minutes d) none of the above

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

Energy flows from the producer level to the level. is called