The sum of the protons and neutrons in an atom equals the
a. atomic number.
b. number of electrons.
c. atomic mass.
d. mass number.

Which of the following is a homogenous mixture? o a. a toy box filled with toys o b. blood o c. trail mix o d. spaghetti and meatballs submit

Two polarizers are oriented at 40∘ to each other and plane-polarized light is incident on them. if only 16 percent of the light gets through both of them, what was the initial polarization direction of the incident light?

If the new moon happens on january 15th, what shape will it be on february 6th?