Physical geography laboratory manual name section exercise 20 problems-part ii (s. i. units) using the psychrometer tables (figures 20-2 and 20-3) and the table of saturation mixing ratios (figure 20-1), answer the following questions about determining relative humidity with a sling psychrometer. 1. if the dry-bulb temperature is 32°c, and the wet-bulb temperature is 26°c (a) (b) (c) what is the relative humidity? what is the dew point? what is the mixing ratio? (estimate from figure 20-1)

The hypothetical island country of gilder lies in the mediterranean sea off the coast of france. demographers have studied gilder for the past 50 years. at the beginning of the study, gilder had a population of 20 million. the demographers have measured birth and death numbers, as well as immigration and emigration numbers, as shown in the data table. from the data, calculate the population of gilder for each 10-year period by filling in the population (no) and population (nt) columns in the data table. use this formula to do your calculations: population size: nt = no + (b + i) – (d + e)initial population = 20,000,000