A Sample of Air at 35 degrees Celsius has a relative humidity of 15%. How do you find the dew point temperature?

Answer 1

http://einstein.atmos.colostate.edu/~mcnoldy/Humidity.html

OR see calculating dew point here:
http://en.wikipedia.org/wiki/Dew_point

Answer 2

independent variable
variable
dependent variable
and the controlled variable.
what are the definitions and some examples.