Recent content by redargon

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    Physics of Soccer: Air Pressure & Curveball Paths

    For a theoretical approach, have a look at the magnus effect. This is the effect that causes balls to curve when they are translated and spun. The only variable dependant on absolute air pressure on the lift equation is density of the air. A higher pressure will increase the air density...
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    Can Hypnosis Alter Our Perception of Reality?

    a blind man cannot walk through walls...
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    L'Hospital of e^(1/x) as limit x-> 0- and 0+

    I agree fully, but the rules for french spelling have changed. "In the 17th and 18th centuries, the name was commonly spelled "l'Hospital", however, French spellings have been altered: the silent 's' has been dropped and replaced with the circumflex over the preceding vowel." -...
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    L'Hospital of e^(1/x) as limit x-> 0- and 0+

    Also, it is L'Hopital's rule not L'Hospital's rule. That way people won't look at you funny when you asked for help on the problem :wink:
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    Skip college and become a Nuclear Power Reactor Operator. Really?

    I've heard it in the news and seems to apply mostly to Europe. Here is a first source : http://news.oneindia.mobi/2011/05/30/803729.html I'll find some others if you'd like...
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    Skip college and become a Nuclear Power Reactor Operator. Really?

    After the disaster in Japan this year, there has been a trend to move away from nuclear power, so I'm not sure that there will be a lot of career opportunities in the future...
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    How Can We Improve the Efficiency and Affordability of Flywheel Energy Storage?

    You're talking about energy storage, but where does the energy come from to get the wheels spinning? Are you talking about storing energy that is produced during low requirement periods and then having that available during peak requirements?
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    Superiority complex within majors

    My dad (physicist) loathes the day I decided to study engineering :) But a couple years along my career path and I do almost everything but what I learned at university. Engineering was more about how to solve problems, for me anyway. Saying that, I always did feel a little higher on the food...
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    How many decimals of Pi do you remember?

    exactly, one should also memorise e; Universal gas constant, R; Stefan-Boltzmann constant, σ; Speed of light in a vacuum, c; Planck constant, h; The density of air at various altitudes, ρ; etc, etc, etc... :-p
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    Physicist, mathematician and engineer jokes.

    Physicist: How does the universe work? Engineer: How does an aircraft work? Mathematician: Do you want fries with that? These are generic and anything can be substituted for mathematician, we used to use: "Arts Major"
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    Is Skipping Classes Worth the Risk in Engineering Programs?

    I just used to go to the less useful classes and do other work during the lecture. If one of the spot tests/assignments came up, or if there was an attendance requirement, then I'd be there, but still be able to use the time for other work, unless the lecture was interesting. Win Win situation...
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    Calculating the minimum speed to produce a certain downforce

    There is not enough information in the question. You'd have to know, at least, the lift coefficient of the the total vehicle due to its "wings". If you know the lift coefficient, I'm guessing it would be negative, so that the lift acts downwards, then you could use the lift equation...
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    Physics/Chem: Dry Ice Expanding at 1 ATM - Push?

    No, not unless you threw a block of the ice at him or let it melt in a big enough closed container to invoke an explosion from the pressure build up as it melts. Sticking a piece of dry ice in front of your buddy and heating up, even with lasers attached to sharks heads (or wild sea bass), is...
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    How do i find the probability of this>?

    this sounds like a homework question. post it in the HW section and follow the guidelines!
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