Suppose you had a collection of a large number of hypothetical quantum objects, each of whose individual energy levels were -4.6 eV, -3.0 eV, -2.1 eV, and -1.6 eV. If nearly all of these identical objects were in the ground state, what would be the energies of dark spectral lines in an absorption spectrum if visible white light (1.8 to 3.1 eV) passes through the material? Enter the energies in order of increasing energy, followed by entering 0 in any later boxes for which there is no dark line within the visible spectrum. (That is, if your answers were 1, 2, and 3 eV, you would enter 1 in the first box, 2 in the second box, and 3 in the third box. If your answers were 1 and 2 eV, you would enter 1 in the first box, 2 in the second box, and 0 in the third box. If your answer is just 1 eV, you would enter 1 in the first box, 0 in the second box, and 0 in the third box.) Smallest energy of a dark line: eV Next larger energy of a dark line (or 0): eV Next larger energy of a dark line (or 0): eV Additional Materials

See the explanation for the answer.

Explanation:

Absorption happens when an object jumps from one allowed energy state to another allowed energy state.

So the energies it can absorb are the differences between the energies. List all those differences as shown below;

For instance 1.6 eV is an allowed jump, between the -4.6 eV and -3 eV energy level and its in the visible light range you were told (1.8 to 3.1 eV).

3 eV is another allowed jump, between -4.6 eV and -1.6 eV. That one is in the visible light range.

2.6 eV is another allowed jump, between -4.9 eV and -2.3 eV. That one is in the visible light range.

1.4 eV is another allowed jump, between -3 eV and -1.6 eV. That one notis in the visible light range.

0.9 eV is another allowed jump, between -3 eV and -2.1 eV. That one is not in the visible light range.

1.6 eV is another allowed jump, between -3 eV and -4.6 eV. That one is in the visible light range.

0.5 eV is another allowed jump, between -2.1 eV and -1.6 eV. That one is not in the visible light range.

0.9 eV is another allowed jump, between -2.1 eV and -3 eV. That one is not in the visible light range.

2.5 eV is another allowed jump, between -2.1 eV and -4.6 eV. That one is in the visible light range.

0.5 eV is another allowed jump, between -1.6 eV and -2.1 eV. That one is not in the visible light range.

1.4 eV is another allowed jump, between -1.6 eV and -3 eV. That one is not in the visible light range.

3 eV is another allowed jump, between -1.6 eV and -4.6 eV. That one is in the visible light range.

air exerts forces on falling objects near earth’s surface.

explanation:

the term 'free falls' refer to object that are falling towards the earth, in a situation in which gravity is the only force acting on the object.

for an object in free fall, the acceleration is constant (g, the gravitational acceleration), and so the velocity of the object constantly increases.

for objects near earth's surface, there is always another force acting on the object: the resistance due to the air. this force is opposed to the direction of fall of the object, and it is proportional to the velocity of the object, so as the object falls down, this force increases up to a point when it balances the force of gravity, and the object continues its motion at constant velocity (called terminal velocity). since in this case gravity is not the only force acting on the object, we are not in a situation of free fall.