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hole_center

by on March 27, 2012
 

 hole center

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  • Sonia Gourley
    April 16, 2012 at 10:36 am

    Whats a good sentence without making it obvious to notify that you hate fake, liars, conceited, ass holes, middle of attention, discuss driving your back again , these sort of people?

    Reply

  • Monique Spalding
    May 11, 2012 at 10:29 am

    I was pondering no matter whether all universes have a black hole center and are they all super enormous or are some galaxies so small that a standard black hole can successfully hold it together. Also, is there an enormous blackhole at he middle of our supercluster. Finally, if there would be anything even bigger than a supercluster would the superclusters of the universe revolve around this presumingly gargantuan blackhole.

    Reply

  • Monique Spalding
    May 16, 2012 at 12:41 pm

    Does anyone have theories or know theories of what would happen if anti matter collided with a black holes center? I’m not sure if the anti matter would even react with the infinite density or if it did how much energy would be released.

    Reply

  • Melissa Nason
    July 6, 2012 at 4:08 pm

    to form a paraboloid. A hole, centered along the axis of revolution, is drilled through the solid. The hole has a radius k, 0 < k < r. Find the volume of the resulting ring (a) by integrating with respect to x and (b) with respect to y.

    Reply

  • Elinor Sturgell
    July 9, 2012 at 1:15 am

    A solid is generated by revolving the region bounded by the following about the y-axis.

    y = sqrt(9 – x^2) and y = 0

    A hole, centered along the axis of revolution, is drilled through this solid so that one-third of the volume is removed. Find the diameter of the hole.

    How does this work?

    Thanks!
    Thanks but I’m not sure what your final answer was. Can you just reply with your final?

    Reply

  • Hayden
    July 10, 2012 at 5:31 am

    A solid is generated by revolving the region bounded by the following about the y-axis.

    y = sqrt(9 – x^2) and y = 0

    A hole, centered along the axis of revolution, is drilled through this solid so that one-third of the volume is removed. Find the diameter of the hole.

    How does this work?

    Thanks!
    Thanks but I’m not sure what your final answer was. Can you just reply with your final?

    Reply

  • RuMKilleR
    July 22, 2012 at 7:46 pm

    Does anyone have theories or know theories of what would happen if anti matter collided with a black holes center? I’m not sure if the anti matter would even react with the infinite density or if it did how much energy would be released.

    Reply

  • NC Baller
    July 22, 2012 at 7:46 pm

    Women’s Study Finds Longevity Means Getting Just Enough Sleep

    A new study, derived from novel sleep research conducted by University of California, San Diego researchers 14 years earlier, suggests that the secret to a long life may come with just enough sleep. Less than five hours a night is probably not enough; eight hours is probably too much.

    A team of scientists, headed by Daniel F. Kripke, MD, professor emeritus of psychiatry at UC San Diego School of Medicine, revisited original research conducted between 1995 and 1999. In that earlier study, part of the Women’s Health Initiative, Kripke and colleagues had monitored 459 women living in San Diego (ranging in age from 50 to 81) to determine if sleep duration could be associated with mortality. Fourteen years later, they returned to see who was still alive and well.

    Of the original participants, 444 were located and evaluated. Eighty-six women had died. Previous studies, based upon questionnaires of people’s sleep habits, had posited that sleeping 6.5 to 7.5 hours per night was associated with best survival. Kripke and colleagues, whose 1990s research had used wrist activity monitors to record sleep durations, essentially confirmed those findings, but with a twist.

    “The surprise was that when sleep was measured objectively, the best survival was observed among women who slept 5 to 6.5 hours,” Kripke said. “Women who slept less than five hours a night or more than 6.5 hours were less likely to be alive at the 14-year follow-up.”

    The findings are published online in the journal Sleep Medicine.

    Kripke said the study should allay some people’s fears that they’re not getting enough sleep. “This means that women who sleep as little as five to six-and-a-half hours have nothing to worry about since that amount of sleep is evidently consistent with excellent survival. That is actually about the average measured sleep duration for San Diego women.”

    Researchers uncovered other interesting findings as well. For example, among older women, obstructive sleep apnea (pauses in breathing during sleep) did not predict increased mortality risk. “Although apneas may be associated with increased mortality risk among those under 60, it does not seem to carry a risk in the older age group, particularly for women,” Kripke said.

    Co-authors of the study include Robert D. Langer of the Jackson Hole Center for Preventive Medicine; Jeffrey A. Elliot and Katharine M. Rex of the UCSD Department of Psychiatry; and Melville R. Klauber of the UCSD Department of Family and Preventive Medicine.

    ———————————–

    i think that it might not be true for everyone… this was conducted only to the old women

    and younger people probably need more time to sleep than just 7 hours because

    they are more active and things they do require more energy, thus need more for body to get

    recovered.

    what do you think?

    Reply

  • Dr Hank
    July 28, 2012 at 12:23 am

    A solid is generated by revolving the region bounded by y=.5x^2 and y=2 about the y-axis. A hole centered along the axis of revolution is drilled though this solid so that .25 of the volume is removed.Find the diameter of the hole. I think I know the answer. Do you know it definitively?
    I ended up with 1.42

    Reply

  • happyha31
    September 20, 2012 at 5:47 am

    1.)Use the shell method to set up and evaluate the integral that gives the volume of the solid generated by revolving the plane region about the x-axis.
    y=7-x from 7 to 10 on the x-axis.

    2.)Use the shell method to find the volume of the solid generated by revolving the plane region about the line x = 2.
    y=x^2
    y=4x-x^2

    3.)A solid is generated by revolving the region bounded by the following about the y-axis.
    y=sqr(4-y^2)
    y=0
    A hole, centered along the axis of revolution, is drilled through this solid so that one-third of the volume is removed. Find the diameter of the hole.

    I’ve gone through my entire homework assignment and these are the ones I keep getting wrong. Please help!

    Reply

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