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Air pressure is 1.0 × 105 N/m2, air density is 1.3 kg/m3, and the density of soft drinks is 1.0 × 103 kg/m3. If
one blows carefully across the top of a straw sticking up 0.100 m from the liquid in a soft drink can, it is
possible to make the soft drink rise half way up the straw and stay there. How fast must the air be blown
across the top of the straw?
a. 76 m/s
b. 27 m/s
c. 19 m/s
d. 0.99 m/s

Air pressure is 10 105 Nm2 air density is 13 kgm3 and the density of soft drinks is 10 103 kgm3 If one blows carefully across the top of a straw sticking up 010 class=

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