A helium airship has a gasbag of volume 10000 m3 at sea level (1.00 bar) and at 20°C. At higher altitudes, the air pressure falls at a rate of 0.10 bar for every 1000 m increase in altitude.
a) What will the volume of the gasbag be at a height of 1500 m, when the pilot's thermometer registers a temperature of 5°C?
b) The airship rises through the atmosphere until the volume of its gasbag is 10500 m3. The temperature is 0°C.
i- What is the pressure indicated by the pilot's
barometer?
ii- Calculate the height of the airship.