HEL A student is observing an image of an object that could be a comet, meteoroid or asteroid. Which of the following questions would BEST confirm that the object is a comet?

A. How big is the object?

B. Does the object contain metals?

C. Does the object contain ice?

D. Where is the object found?

the growth of the plants is affected by the heat of the light. what is the student doing?

linnaeus is the father of taxonomy, which is the system of classifying and naming organisms. one of his contributions was the development of a hierarchical system of classification of nature. today, this system includes eight taxa: domain, kingdom, phylum, class, order, family, genus, and species.

energy per photon is e = h*c / λ  

e = 6.63*10^-34 * 3*10^8 / 6*10^-7 j = 3.315*10^-19 j  

nr. of photons = 10j / 3.315*10 = ^-19 j per photon = 3.02*10^19 photons