P. 4418. One end of a thin L-shaped tube is sealed, and the tube is held in the vertical plane. The mercury column of length H/2 confines some air (as shown in Figure 1.), the temperature of the confined air is T1=279 K. The external air pressure p0 is equal to the hydrostatic pressure of a mercury column of height H=76 cm. a) Determine the pressure of the confined air.
b) The tube is turned by 90o, and the air is cooled down such that the air is in the horizontal arm of the L-shaped tube as shown in Figure 2. What is the temperature T2 of the air now?
Solution (in Hungarian)