Pipes Definition and 166 Threads

PIPES is the common name for piperazine-N,N′-bis(2-ethanesulfonic acid), and is a frequently used buffering agent in biochemistry. It is an ethanesulfonic acid buffer developed by Good et al. in the 1960s.

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  1. D

    My house has Lead Solder on One of the Pipes

    Some time in the past my father took it upon himself to due a little plumbing. He decided that it was okay to use solder that contained lead to connect two pipes right near the output of the water heater. His reasoning was that we would not get lead poisoning because we could always use cold...
  2. I

    Two pipes of water flowing into one another

    If you have two pipes of water flowing directly into one another and both are at 5psi and at the point where they interact with each other there is a tube like a tee. where the fluid can escape. Will the two force of water increase the total pressure and the force of the water leaving the tee.
  3. T

    Mixing problem involving 3 inlets and 2 outlet pipes

    help! how do we solve a mixing problem involving 3 inlet pipes and 2 outlet pipes?is it okay to just add up the 3 rates of input as well as their respective concentrations? all the sample problems i have encountered involves only 1 inlet and one outlet pipe..
  4. T

    Water friction in pipes, hot vs cold?

    I usually use an average number of 2 kPa friction loss for normal tap water in pipes. Does anyone know if this number changes significantly up or down for water which is around 80 degrees C instead of 5?
  5. T

    Determining Forces on Pipes and Rollers - Get Help Here!

    The drawing below shows two pipes lying on top of each other. Forces act on the different contact points, and I am to determine these as a result of the pipes' weight G. I'm able to do this graphically, but not by calculation. Next up is a similar problem, I'm to determine the forces at A...
  6. B

    Investigating Beat Frequency in Pipes with Different Temperatures

    Two pipes, equal in length, are each open at one end. Each has a fundamental frequency of 473 Hz at 297 K. In one pipe the air temperature is increased to 302 K. If the two pipes are sounded together, what beat frequency results? I think I missed this day entirely due to another project. I...
  7. F

    What are the possible lengths of organ pipes based on beat frequency?

    A friend in another city tells you that she has a pair of organ pipes, one open at both ends, the other open at one end only. In addition, she has determined that the beat frequency caused by the second-lowest frequency of each pipe is equal to the beat frequency caused by the ninth-lowest...
  8. M

    Is My Physics Teacher's Explanation of Dropping Magnets Through Pipes Accurate?

    My physics teacher explained to our class the traditional "dropping a magnet through a tube" experiment. As we all know, it slows down and takes longer than usual to fall through. However, he gave us an explanation that I am unsure about. I seem to remember reading about a different explanation...
  9. Y

    Stationary Waves on Strings and in Pipes?

    Hey! Was just wondering if someone could shed some light on the whole stationary waves thing. I've done about them in my A-Level Physics course and I can't for the life of me figure out what it's about. I mean, why can you only have a certain number of nodes, hence certain frequencies...
  10. M

    Frequency & Length of Resonating Pipes

    I have completed a lab on sound waves in which we measured the speed of sound in air(a vaccum) by measuring the lengths of pipes that would resonate tunning forks fundamental frequencies. One question I am asked to answer is to describe the relationship between the frequency of a sound and the...
  11. L

    Maximizing Water Pressure in Split Pipe Systems | Calculating Pressure Loss

    Let's say that we have a 3/4" copper line to supply water. We have a volumetric flow of 20 gpm (0.0445 ft^3/s). With this, we have a velocity of 14.35 ft/s. Now, at the end of the copper line, I want to service two homes, so I split the service. Comming out of the 3/4" copper line, I have...
  12. C

    Solving Bernoulli's Principle Problem: Flow Rate in Horizontal Pipes

    Hi! This is the first question on my homework, so it's suppost to be the easiest, but I'm not sure how to tackle it. It's a Bernoulli's principle problem. Here it is: A horizontal pipe 11.6 cm in diameter has a smooth reduction to a pipe 4.72 cm in diameter. If the pressure of the water...
  13. M

    Can you make cardboard organ pipes?

    Hello! I was looking for literature on working and details of "Organ pipes". Theory of how they work would help a lot too. In the end, I want to build shrunk down version of the same. What would limits of scaling be for the same? Any help is appreciated. Manu
  14. N

    Are hollow pipes less likely to bend under weight

    I have recently heard a rumor that a hollow pipe can endure a greater load without bending than a solid rod. Is that true, and why? Thanks.
  15. G

    Designing Rig/Fixture for Oscillating Pipes

    I am currently involved in a project that is designing a rig or fixture for oscillating pipes. I was just wondering if anyone out there would have any information on this topic, I would be very greatfull if so. Thanks
  16. E

    Solving Frequency in Pipes - eku_girl

    First of all, thanks to everyone on the physics forum! My semester is almost over and I know I never would have gotten through it without the help of the people on these boards :) Here's my question: A certain pipe produces a fundmanetal frequency of 218 Hz in air. If the pipe is filled with...
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