A) A ground radar system is being used to track a missile after launch. The missile is flying straight up at 1,458 m/s and an altitude of 45,219 meters. The value of theta measured by radar is currently 138 degrees. What is the current value for r_dot? Give the numerical answer corresponding to m/s. b) what is the value of theta_dot? (the rate of change of theta)

Asteam is contained in a rigid tank with a volume of 1 m3. initially, the pressure and temperature are 7 bar and 500 oc, respectively. the temperature drops due to cooling process. determine: (1) the temperature at which condensation begins in °c, (2) the fraction of the total mass that has condensed when the pressure decreased to 0.5 bar. (3) the volume in m3 occupied by saturated liquid at the final state?