Physics
The mass defect is the result of what action occurring?

Energy being converted into moles of atoms when neutrons break apart protons
Mass being converted to energy when protons and neutrons break apart in a nucleus
Protons and electrons being attracted to each other
Mass being converted to energy when protons and neutrons bind together in a nucleus

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Physics
A balloon filled with hydrogen will

Burst after reaching some height
Reach a particular height and start coming down
Continue going upwards uninterrupted
Reach a particular height and remain floating

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Physics
The blue colour of water in the sea is due to

Absorption of other colours except blue by water molecules
Reflection of blue light by impurities in sea water
Scattering of blue light by water molecules
Reflection of blue sky by sea water

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