Answer:
a. absorbs light at one wavelength and emits light at a longer wavelength.
Explanation:
Fluorescence is a kind of luminescence in which there is the emission of the light by the substance which has absorbed light with more photon energy as compared to the emitted energy.
<u>It occurs when the emitted light has longer wavelength because of lower energy as compared to the absorbed radiation.</u>
According to the United States Department of Agriculture:
<span>"The compass direction that the slope of a land surface faces toward (e.g., north, northwest, south). (After Soil Conserv. Soc. Amer. 1970)"
I hope my answer has come to your help. God bless and have a nice day ahead!</span>
Answer:
Explanation:
The normal force exerted on the car by the walls of the cylinder at the bottom of the vertical circle will be such that when substracted to the weight it must give the centripetal force, since at that point on the vertical 
We also know that the equation for the centripetal force is:
Mixing both equations we get:
Which for our values means:
It represents where it is located in the periodic table and how many protons a element has.
