thank you guys who helped me when i got kidnapped- i can't thank enough but i hope there is enough points. :)

How does the amount of energy required to hold each proton and neutron in the nucleus compare to the energy released when they are removed?

Which statement best describes the superposition principle? a.) if two in-phase waves arrive simultaneously at a point, their amplitudes add up b.) if two out-of-phase waves arrive simultaneously at a point, their amplitudes add up c.) if two in-phase waves arrive at a point one after another, their amplitudes add up d.) if two out-of-phase waves arrive at a point one after another, their amplitudes adds up

Estimate of the number of stars in our galaxy