Why is humid air lighter than dry air?
Humid air contains more water vapours and therefore should be heavier than dry air. I do not know whether you are familiar with high school chemistry or physics. But you know thata molecule of water contains two atoms of hydrogen and one of oxygen. Its molecular weight is therefore 2+16 = 18. On the other hand air is mostly nitrogen and some oxygen. If it were all nitrogen the molecular weight of air would be14+14=28 and if all oxygen it would be 16+16=32. Therefore water vapour is definitely much lighter than air. It is lucky. Otherwise we would not have any clouds or rain! Why are we able to balance only a moving bicycle and not a cycle at rest? I think I have answered this earlier. Incidentally it would be useful if you search the archives of The Tribune for my answers to several of your questions. But let menot be rude and give you a short answer to your important query. In order to ensure that the bicycle does not fall off you have to ensure thatthe centre of mass (of you and bicy
Humid air contains more water vapours and therefore should be heavier than dry air. I do not know whether you are familiar with high school chemistry or physics. But you know thata molecule of water contains two atoms of hydrogen and one of oxygen. Its molecular weight is therefore 2+16 = 18. On the other hand air is mostly nitrogen and some oxygen. If it were all nitrogen the molecular weight of air would be14+14=28 and if all oxygen it would be 16+16=32. Therefore water vapour is definitely much lighter than air. It is lucky. Otherwise we would not have any clouds or rain! Why are we able to balance only a moving bicycle and not a cycle at rest? I think I have answered this earlier. Incidentally it would be useful if you search the archives of The Tribune for my answers to several of your questions. But let menot be rude and give you a short answer to your important query. In order to ensure that the bicycle does not fall off you have to ensure thatthe centre of mass (of you and bicy
