A very small hole is punched in a full milk carton, 10 cm below the top. What is the initial velocity of outflow? I used Bernoulli's equation for conservation of energy in a fluid but I don't understand why the pressures would cancel out.

Question

A very small hole is punched in a full milk carton, 10 cm below the top.  What is the initial velocity of outflow?  I used Bernoulli's equation for conservation of energy in a fluid but I don't understand why the pressures would cancel out.

anonymous · Answer

pressure is atmosphere at both the hole and the top of the tank...

anonymous · Answer

i don't understand how this question came up. I was replying to it and for some reason when i sign in to the website it appeared as my first question.