Final answer:
The dew-point temperature can be determined by comparing the wet-bulb and dry-bulb temperatures. In this case, with a wet-bulb temperature of 65°F and a dry-bulb temperature of 100°F, the dew-point temperature is 30°F.
Step-by-step explanation:
The dew-point temperature is the temperature at which water vapor in the air condenses into liquid water. It is the temperature at which the air becomes saturated with water vapor and cannot hold any more moisture. To determine the dew-point temperature, we need to use the wet-bulb and dry-bulb temperatures.
The difference between the dry-bulb and wet-bulb temperatures represents the evaporative cooling effect caused by the evaporation of water from the wet-bulb thermometer. By comparing the wet-bulb temperature with the dry-bulb temperature, we can determine the humidity of the air and the dew-point temperature.
In this case, we have a dry-bulb temperature of 100°F and a wet-bulb temperature of 65°F. The difference between the two is 35°F. Assuming a relative humidity of 100%, the dew-point temperature is 65°F - 35°F = 30°F.