Old Faithful Geyser in Yellowstone National Park erupts at approximately
one-hour intervals, and the height of the water column reaches 40.0 m
(as shown). (a) Model the rising stream as a series of separate droplets.
Analyze the free-fall motion of one of the droplets to determine the speed at which the water leaves the ground. (b) What If? Model the rising stream
as an ideal fluid in streamline flow. Use Bernoulli’s equation to determine the speed of the water as it leaves ground level. (c) How does the answer from part (a) compare with the answer from part (b)? (d) What is the pressure (above atmospheric) in the heated underground chamber if its depth is 175 m? Assume the chamber is large compared with the geyser’s vent.
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