Answer:

Explanation:
The mass of one electron is

So the number of electrons contained in M=1.7 kg of mass is

The charge of one electron is

So, the total charge of these electrons is equal to the charge of one electron times the number of electrons:

Answer:
c
Explanation:
all the others r physical
They are similar because they are all colors in the spectrum and they are different because you cant seperate primary colors but you can seperate secondary