The nonlinear relationship between temperature and saturation makes it possible for two unsaturated air samples to mix and form a new saturated air sample. jet contrails are one example of this as warm exhaust containing moisture mixes with cold air. some contrails disappear quickly, others singer. what do you think determins the life span of a contrail?

Awater balloon launcher uses an elastic band with a spring constant of 115 n/m to use thee launcher you stretch thee band back with a balloon n it the water balloons have a mass of 1.3 kg a) if you stretch the band by 0.8 m, what elastic force will the band exert? b) with the band stretched 0.8 m, how much elastic potential energy is stored in the spring? c) if you release the band, it pushes forward. what is the kinetic energy of the balloon when it reaches the natural length of the band? d) what is the speed of the balloon when it reaches the natural length of the band?