Select all that apply. The spectrum of Star S is compared to a reference hydrogen spectrum. What can be concluded about Star S?

Star S is moving away from Earth.
Star S is moving toward Earth.
Star S has transverse motion.
Star S has radial motion.

Arock collection comes from which part of earth?

At very high pressures, gases become and will eventually a) more dense; become hotter b) more dense; change to a liquid or solid c) less dense; combust d) less dense; turn into a liquid

Hydrogen atoms are excited by a laser to the =4n=4 state and then allowed to emit. what is the maximum number of distinct emission spectral lines (lines of different wavelengths) that can be observed from this system? 8 6 2 7 4 5 1 3 calculate the wavelength of the 4⟶14⟶1 transition. =λ=