Which of the following best describes the relationship between air temperature and relative humidity? Cold air cannot hold any water vapor.

Warm air can hold less water vapor than cold air.

Cold air can hold less water vapor than warm air.

Warm air and water vapor are measured in degrees Celsius (⁰C).

Awater slide of length l has a vertical drop of h. abby's mass is m. an average friction force of magnitude f opposes her motion. she starts down the slide at initial speed vi. use work-energy ideas to develop an expression for her speed at the bottom of the slide. then evaluate your result using unit analysis and limiting case analysis. express your answer in terms of the variables h, m, l, vi, f and appropriate constants. vf v f