# Recent content by kv2

1. ### Sound waves prob

A bat flies toward a wall, emitting a steady sound of frequency 2.00 kHz. This bat hears its own sound plus the sound reflected by the wall. How fast should the bat fly in order to hear a beat frequency of 10.0 Hz? Give your answer to two significant figures. Take the speed of sound to be 344...
2. ### Just some simple fluid mechanics questions

ohh... so the statement "increase in velocity results in decrease in pressure" refers to the static pressure of the fluid, not the total? is static pressure just commonly refered to as just "pressure" or something? or am i still mistaken? so increase in velocity will increase the dynamic...
3. ### Just some simple fluid mechanics questions

bernoulli's principle says.. total pressure = static pressure + dynamic pressure + pressure from height, right? but how come I hear that an increase in velocity is a decrease in pressure? if you increase velocity as the 'v' part in dynamic pressure won't the entire pressure increase as well...
4. ### Bernoulli's stuff

ohhh i see.. thanks. that made sense. can you help me with this one? I got the answer to this question already but I don't really get it. http://k.ebzlo.com/prob2.htm [Broken] Can I get an explaination of the summary below part A's answer? the part about how fluid in part A is not...
5. ### Bernoulli's stuff

how do you know where to set height=0? why is the dynamic pressure in the cup 0? there's fluid going into the straw isn't there? why doesn't the lower end of the straw have any positional pressure in it? isn't it falling down so there should be force pulling the fluid down the straw? even both...
6. ### Bernoulli's stuff

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...
7. ### Ever feel like you don't know what you're doing in life ?

yea i'm probably sticking with engineering of some sort because I looked at all the list of majors offered at my school and seriously none of them seem to fit me. Well it's good you finally found your calling.... don't know what I should do. bleh
8. ### Ever feel like you don't know what you're doing in life ?

so this is my first post but I've read the forums for a while and i think this is an appropriate place to ask for some advice about this future or mine and maybe other people who can relate. I'm a soph in college right now. I'm currently majoring in computer engineering. I thought i liked...