Question

q1 (a) wet clothes do not dry easily on a rainy day .
(b) we feel relief under a fan when we perspire.
q2 why do we see water droplets on the outer surface of a glass contaning ice cold water?

Answer 1

1) (a) wet clothes do not dry easily on a rainy day because on a rainy day the humidity present in air is very high which affects the rate of evaporation.
(b) wind speed affects rate of evaporation, evaporation increases when wind speed increases. During evaporation of our sweat it takes latent heat from our body which does a cooling effect.That's why we feel relief under a fan when we perspire.

Answer 2

Moisture in the air is condensed and precipitated because of cooler temperature or similar effect. ... The aircontaining water vapor in gaseous form reacts with the cold surfacewhich is then converted into liquidwater as its molecules slow down andget closer together resulting in the formation of water droplets.