Round 4: Tossup 12

When this condition approximately holds, the scale height of an accretion disk is proportional to the three-halves power of radius. Derivations of gravitational lensing use an idealized “sphere” named for this condition that holds density proportional to the square of velocity dispersion over “two pi G r squared.” On curves named for this condition, vertical or horizontal lines connect spinodal points between which no stable states can exist in the (*) Maxwell construction. The work done by a gas under this condition is proportional to the log of a ratio of volumes. Processes under this condition are represented by hyperbolas on P-V diagrams, such as when an ideal gas interacts with a heat bath at the start of the Carnot cycle. For 10 points, name this condition where the number of degrees Celsius doesn’t change. ■END■ (10[2])

Back to tossups

Buzzes

Summary