If a spring balance with the iron ball is released, what reading does the spring balance record and why

Wave functions describe orbitals in a hydrogen atom. each function is characterized by 3 quantum numbers: n, l, and ml. if the value of n = 2: the quantum number l can have values from to . the total number of orbitals possible at the n = 2 energy level is .

A1.5m wire carries a 2 a current when a potential difference of 52 v is applied. what is the resistance of the wire?

List and describe three ways that humans can change ecosystems and three ways that humans can protect ecosystems.