Astar’s light is alternately shifted from the blue part of the light spectrum to the red part.
what does this mean about the length of light waves and movement of the star?
a.
the wavelengths are getting shorter then longer, meaning the star is moving away from the observer.
b.
the wavelengths are getting shorter then longer, meaning the star is moving toward the observer.
c.
the wavelengths are getting shorter then longer, meaning the star is revolving around another unseen object.
d.
the wavelengths are getting shorter then longer, meaning the star is rotating rapidly.

The particle in a two-dimensional well is a useful model for the motion of electrons around the indole ring (3), the conjugated cycle found in the side chain of tryptophan. we may regard indole as a rectangle with sides of length 280 pm and 450 pm, with 10 electrons in the conjugated p system. as in case study 9.1, we assume that in the ground state of the molecule each quantized level is occupied by two electrons. (a) calculate the energy of an electron in the highest occupied level. (b) calculate the frequency of radiation that can induce a transition between the highest occupied and lowest unoccupied levels. 9.27 electrons around the porphine ring (4), the conjugated macrocycle that forms the structural basis of the heme group and the chlorophylls. we may treat the group as a circular ring of radius 440 pm, with 20 electrons in the conjugated system moving along the perimeter of the ring. as in exercise 9.26, assume that in the ground state of the molecule quantized each level is occupied by two electrons. (a) calculate the energy and angular momentum of an electron in the highest occupied level. (b) calculate the frequency of radiation that can induce a transition between the highest occupied and lowest unoccupied levels.

The necleus of an atom is made up of what subatomic particles?

How will the system respond to a temperature increase?