At 15° C, air reaches saturation when it contains 10 g of water vapor per 1 kg of air. What is the relative humidity of air at 15°C that contains 7g of water vapor per 1 kg of air?

On mars a rock falls an unknown vertical distance from a resting position and lands in a crater. if it takes the rock 2.5 seconds to fall, how high is the cliff the rock fell from? mars' surface gravity is 3.8 m/s2. a. 9.5 m b. 11.9 m c. 15.2 m d. 23.8 m