A. What is the pressure within a soap bubble of given radius of curvature?<p><br>

B. What is the frequency of oscillation of a small water droplet suspended in air (like the kind
   you see coming out of astronauts' straws in zero-gravity environments)?<p><br>

C. Sterl's problem on thermodynamics of relativistic gas (for homework).<p><br>

D. A photograph of an atomic explosion in New Mexico reveals that the radius of the shock
   wave is 150 meters at a time of 1.5 milliseconds after detonation. Estimate the
   energy released in the explosion in equivalent tons of TNT.<p><br>

E. An isothermal, non-rotating molecular cloud core that is in marginal hydrostatic equilibrium begins
   to collapse gravitationally. At what rate does mass accrete onto the young star at its center?<p><br>

F. Derive the maximum size of a falling raindrop.