1.) The elapsed since the beginning of the Universe is in the order of:
10^18 seconds
2.) The Magnitude of the mass of the Universe is:
10^50 Kg
3.) The ratio of [diameter of hydrogen atom]/[diameter of hydrogen nucleus] to the nearest oreder of magnitude is:
10^5 (ratio - no units)
4.) The diameter of a proton is of the order of:
10^-15 meters
5.) The best estimate for the time it takes light to cross the nucleus of the hydrogen atom is:
