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About Silencer

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    Philadelphia, Pennsylvania, USA
  1. Hello! We have created a science forum. Researchers, professors, post graduate students and undergraduate students are invited to join/register our forum.


    This is the link to my forum. It is still under construction and will be fully active from 1is august. Last date of registration is 15th august, so please join it as soon as possible. It will be a great pleasure for me, if you join it.


    Nikhil aggarwal

    University of Delhi, India

  2. I am doing a project for my calculus class in which we give a presentation about a career that utilizes calculus. I chose Electrical Engineering. Can anyone provide some examples of how EE uses calculus? I know a lot of formulas are used, but I'm sure some of these must have been derived using calculus. Aren't Maxwell's Equations used in EE? A few examples or just general cases that I can research further would be helpful. Than you!
  3. The latex balloon can also melt from the explosion, causing droplets of hot plastic to be flung at you.
  4. They must put a chemical in to stop the separation, or they flash freeze it.
  5. One day this week I made some tea and put sugar in it. However, it was really hot and I was in a hurry so I put it in the freezer to cool it off a little. Well, I forgot about my tea and found a tea popsicle in my freezer, complete with a spoon handle. Well, it tasted pretty good, except that the top (part closest to the handle of the spoon) was really sweet. I was wondering what happened to the solution as it cooled. Did the sugar all rise to the top and start to crystalize as the solution cooled? Also, when I managed to get it out of the mug it almost immediately began dripping. It w
  6. Silencer


    Look at the picture with the crayons. That's wild.
  7. ...really descriptive title, I know. I was wondering about the physics of devices in which air bubbles pass through a liquid and then out again. I got to thinking about a straw, and how the water is moved through the tube. You have two openings, one in the cup which is really big, and then the end of the straw which is really small. If you reduce the pressure on the straw end the water gets pushed up the tube by pressure on the other end. But what if you reduce pressure on the cup side? It seems that the air will bubble through the liquid and out. Is this because there isn't enough
  8. This is a slightly related anecdote. I'm not sure how my brother heard this story. A large natural gas main was broken and literally wailing gas. The fire department was all around pretty much just keeping people away and letting the gas company people do there thing. A guy from the company walks up with a lit cigarette and just tosses it into the gas pipe. It extinguishes. Meanwhile, the firemen were shitting their pants. He says, "ehh, it needs to oxidize first before it can burn." True? Who knows. but it was amusing.
  9. Let [math]f(x) = (1 + \frac{1}{x})^{x}[/math] a. Find the domain of f. b. Draw the graph of f. c. Explain why x=-1 and x=0 are points of discontinuity of f. d. Are either of the discontinuities in part c removable? Explain. e. Use graphs and tables to estimate [math]\lim_{x\to\infty} f(x)[/math] I don't really know how to do a. There are a lot of values between -1 and 0 that are undefined. B and C are easy enough. D I have trouble because I don't know how to find the limit with the exponent. Would substitution be valid? And e I can handle. Thank you!
  10. You switch from first to third person a lot. Neat experiment, though.
  11. How do you determine how "strong" something is when it freezes? If the pressure was great enough, could you stop it from freezing?
  12. Breakdown of the capsaicin? Just heat it up and throw in some chili pepper.
  13. The molecular formula for water is H2O. That's two hydrogens and one Oxygen. The reaction for creating water by exploding H2 and O2 together is 2H2 + O2 -> 2H2O That means that for every molecule of oxygen you need two of hydrogen. Since you're working with gasses that will be under the same pressure and temperature, you know that equivalent volumes will also have about the same number of molecules. So it's really 2 parts hydrogen and 1 part oxygen. However, you should probably take YT's suggestion and use equal parts, that way more of the balloon will be consumed and you won't hav
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