July 2011 edited July 2011 in Engineering Majors. I'm not saying I'm going to go into it, I'm just curios what you guys think. I'm either going to become a Mechanical or Aerospace engineer  they both interest me a lot.
This denarius contained an average 4.5 grams, or 1 â 72 of a Roman pound of silver. It formed the backbone of Roman currency throughout the Roman republic. The denarius began to undergo slow debasement toward the end of the republican period. Under the rule of Augustus, (63 BC-AD 14) its silver content fell to 3.9 grams (a theoretical weight of 1 â 84 of a Roman pound). It remained at nearly this weight until the time of Nero (AD 37-68), when it was reduced to 1 â 96 of a
The hydrogen atom is composed of a very light, negatively charged electron, and a heavy, positively charged proton. The weight of the proton is 1.00758 atomic mass units (about 6.02 x 10 23 protons weigh 1.00758 grams). The electron weighs about 1/1837 of the proton's weight.The diameter of a proton has a fairly definite meaning, and is 1.6 x 10 -13 cm. The diameter of a hydrogen atom in its ground state is around 1 x 10 -8 cm, so the ratio of the diameters is about 1.6 x 10 -5, which makes the ratio of the volumes 4.1 x 10 -15.he diameter of a proton has a fairly definite meaning, and is 1.6 x 10 -13 cm. The diameter of a hydrogen atom in its ground state is around 1 x 10 -8 cm, so the ratio of the diameters is about 1.6 x 10 -5, which makes the ratio of the volumes 4.1 x 10 -15.