1-109E Consider a U-tube whose arms are open to the atmosphere. Now equal volumes of water and light oil (p 49.3 lbm/ft') are poured from different arms. A person blows from the oil side of the U-tube until the contact surface of the two fluids moves to the bottom of the U-tube, and thus the liquid levels in the two arms are the same. If the fluid height in each arm is 30 in, determine the gage pressure the person exerts on the oil by blowing. Air Oil Water 30 in

Elements Of Electromagnetics
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1-109E Consider a U-tube whose arms are open to the
atmosphere. Now equal volumes of water and light oil (p
49.3 lbm/ft') are poured from different arms. A person blows
from the oil side of the U-tube until the contact surface of the
two fluids moves to the bottom of the U-tube, and thus the
liquid levels in the two arms are the same. If the fluid height
in each arm is 30 in, determine the gage pressure the person
exerts on the oil by blowing.
-Air
Oil
Water
30 in
FIGURE P1-109E
Transcribed Image Text:1-109E Consider a U-tube whose arms are open to the atmosphere. Now equal volumes of water and light oil (p 49.3 lbm/ft') are poured from different arms. A person blows from the oil side of the U-tube until the contact surface of the two fluids moves to the bottom of the U-tube, and thus the liquid levels in the two arms are the same. If the fluid height in each arm is 30 in, determine the gage pressure the person exerts on the oil by blowing. -Air Oil Water 30 in FIGURE P1-109E
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