make a list of different types of energy sources found in our surroundings and categorize them into different form of energy.

Which of the following is an example of motion in two dimensions?

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 .

What sort of waves exhibit the doppler effect?