Ok this stuff is confusing. Can someone give me a dumbified overview of this? I don't get when/how to use the equation. There are so many different forms and variations of pressure, bernoulli's equations it gets really confusing. I don't know what to equate what to what... ugh i don't know how to explain. I looked it up in wolfram and wikipedia and I read through the section numerous times and i still do not get it.... here is an example of some problem i don't know how to solve. It shows I got #1 right but i don't know how to get it, i just copied it from the textbook. help is greatly appreciated.