4.) What determines a star brightness? * a. Size
b. Temperature
c. Size & Temperature
d. Color & Temperature

Which of these statements is true? a. quarks pair with leptons to form protons and neutrons. b. quarks pair with bosons to form photons. c. quarks pair with photons to form protons and neutrons. d. quarks pair with other quarks to form protons and neutrons. e. quarks pair with electrons to form protons.

To a of 4 x hz is 1. 0. mm nm nm

Can anyone plz answer any of these. even if its one it will