The chart below compares the characteristics of four objects, A, B, C, D, discovered in the solar system. Which of these is most likely to be a dwarf planet?

Object C

Object D

Object B

Object A

italy's population growth rate is almost at zero, the national statistics agency, istat, said on monday, mainly due to a dwindling birth rate.

i think that c)gold was found there

but i am not sure

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