Air is trapped in the sealed lower part of the vertical capillary tube shown in Fig. 16-1

Question:

Air is trapped in the sealed lower part of the vertical capillary tube shown in Fig. 16-1 by an 8.0-cm-long mercury column. The top is open, and the system is at equilibrium. What will be the length of the trapped air column if the tube is now tilted so it makes an angle of 65° to the vertical? Take P_a = 76 cmHg.

8.0 cm 12 cm Fig. 16-1