Question

Geysers in Yellowstone National Park and elsewhere shoot columns of water  as high as 50 m into the air at more or less regular intervals. If the water at themouth of a geyser is assumed to be initially at rest, what subsurface pressure is needed for the water to reach such a height?

Answer 1

$$p=\rho gh\\p=(1000)(9.8)(50)=490\ kPa$$