Why are some oscillators, such as a marble rolling in a U-shaped tube, not examples of simple harmonic

Exercise 2. find the wavelength of a photon emitted when an electron jumps from the n = 3 energy level down to the n = 2 energy level. where is this photon in the electromagnetic spectrum?

2. circled insects have mutations, or changes to their dna. how many of the offspring insects in this generation have mutations?

The molecular mass of a gas is (select all that apply) a. independent of the type of gas b. the same number as the atomic (or molecular) mass, but measured in grams c. dependent on the temperature d. the mass of a mole of the gas