Lost Definition and 576 Threads

  1. S

    Totally lost on magnetic flux question

    A uniform magnetic field of 0.0300T points vertically upward. Find the magnitude of the magnetic flux through each of the 5 sides of the open topped rectangular box, given the dimensions of the box are, length = 0.335m width = 0.12m, and Height = .10m. Find Wb through long side, short side...
  2. W

    Help a Lost Student: Calculating Heat Transfer in H2O

    I am lost on this homework assignment, and I am really hoping that you guys can help me out. Here goes: A 500.0-g Fe bar at 212 degrees C is placed in 2.0L of H20 at 24.0 degrees C. What will be the change in temperature of the H2O? (if is assumed that no heat is lost to the surroundings) I...
  3. M

    Is the Universe Bound by the Laws of Conservation?

    I am wonderring is there a known solution to the problem that all the light emitted by the stars must come out of the universe (if it is finite). All the energie is then lost and if the universe loses energie, it loses mass hence is bound to disappear someday... *if there will be an end, there...
  4. G

    Has ayone seen the lost simultaneity?

    The figure is of a moving frame moving to the right at velocity = 1/3c. On each end of the frame is a mirror (L and R) located at 4(1/3 + 1/3 + 1/3 + 1/3) x (1 second) from the midpoint of the frame. A pulse of light emitted at M (on either the moving or stationary frame) . We define the...
  5. M

    Could Mars Have Lost a Large Moon?

    I was just wondering if anyone has ever studyed what a large moon like ours would do to mars? Maybe the tektonic strain could be enough to warm the core and start volcanic activity. Could Mars have once had a large moon that was lost, maybe the asteroid belt could once have been a large body...
  6. T

    What mass is lost after a hypernovae?

    after a neutron star goes into hypernovae how much mass is lost?
  7. V

    What is "Lost"? Understanding a Status

    Okay, guys, I have a question What exactly is *lost* ? I don't mean anything about losing a game, losing for something, I mean a status, yes, I am lost, you are lost, we are getting lost etc. :smile: A couple of days ago, I didnt know why I, on one hand held my cup of coffee without sugar...
  8. PFanalog57

    What is the Connection Between the ABC Conjecture and Fermat's Last Theorem?

    5^1 = 1*0 + 5 5^2 = 2*10 + 5 5^3 = 3*40 + 5 5^p = p*a + 5 x^p = p*a + x x^p = p*a + x y^p = p*b + y z^p = p*c + z ...x^p + y^p = z^p p*a + x + p*b + y = p*c + z p*[a + b - c] = z - [x + y] p = [z - (x + y)]/[a + b - c]...
  9. P

    Is information lost in a black hole?

    Ok, so we know that black holes emit Hawking radiation. Knowing this, it is safe to say that over time, black holes will decrease in size until they disappear totally. After decreasing, everything should go back to normal, you'd think. My question is, does the "data", that had been sucked in by...
  10. E

    What Should You Do When You Can't Forget Someone You Secretly Like?

    if a guy likes a girl once (secretly) but who he does not want to be with.(somehow by many factors) so he try to forgot about her.and scucced but ppl around that guy always trying to force the guy remmber that girl again. wat should the guy do?
  11. F

    I'm lost on this angular acceleration problem

    Okay, so there's a car traveling 97km/h (26.94 m/s). It's wheels have a diameter of 76cm (0.76 m), so the radius of the wheels are 0.38 m. I'm supposed to find the angular speed of the wheels about the axle. Can I say the speed of a tangent from the wheels is 26.94 m/s and use that to find...
  12. M

    Help with Two Particles Elastic Glancing Collision

    completely lost:(.. please help Ok I have been looking at this problem and i really don't know where to start. I've done all the other homework in my section but cannot get this. I would appreciate it if someone would help me:). Here it is. Two particles, of masses m and 2.88m are moving...
  13. D

    3 unknown variables- I'm lost one this one right now

    Can someone explain to me how to do this? If a(x-2)+4(5x+b)=23x-30 find the values of a and b Thank you
  14. F

    Is it better to have loved and lost than to have ever loved at all?

    Is it better to have loved and lost than to have ever loved at all?
  15. wasteofo2

    How are electrolytes lost in sweat/why is salt?

    I understand that when you sweat, the water is to cool you and urea is excreted because it's a waste, however I don't know why salt is excreted, nor to I know how electrolytes are used in the process of sweating. Would someone care to enlighten me?
  16. R

    Cylinder fitted with piston and spring im lost

    A cylinder is fitted with a piston, beneath which is a spring, as in the drawing. The cylinder is open at the top. Friction is absent. The spring constant of the spring is 2900 N/m. The piston has a negligible mass and a radius of 0.023 m. (a) When air beneath the piston is completely pumped...
  17. Ivan Seeking

    Is Occam's Razor Obsolete in Light of Modern Scientific Complexity?

    First, we find in the skeptics dictionary that the concept is not well defined. http://skepdic.com/occam.html Next, the concept predates modern physics and is no more valid than 12th century physics. Consider Occam's original premise: Clearly the credibility of this premise died with...
  18. S

    Ballistic Pedulum - Finding Kinetic Energy Lost

    Here's a problem that I've been having trouble on for awhile and seem to be stuck. I was just wondering if someone could guide me or show me how to do this problem. The Ballistic pendulum is a device usd to measure the speed of a fast-moving projectile such as a bullet. The bullet is fired...
  19. Ivan Seeking

    Explorers on the trail of Lost City of Atlantis: Telegraph UK

    http://www.telegraph.co.uk/news/main.jhtml?xml=/news/2003/10/27/natlan27.xml&sSheet=/news/2003/10/27/ixnewstop.html
  20. T

    What is the energy lost due to friction?

    Okay, I have this problem I've been fighting with for a couple of hours now. I have the answers for it, but I can't figure out how they're the answers. Here's the problem: A sledge loaded with bricks has a total mass of 18.0 kg and is pulled at constant speed by a rope. The rope is inclined...
  21. P

    Force Magnitudes, directions, gravity, etc (lost)

    Hey all, First-time poster here, hope y'all can help me. I'm ok with 85% of my homework this evening, but this one darned problem keeps tripping me up. Real quick, just to note, I'm still in high school, but this is Physics AP, so let me know if I'm in the wrong forum. Thanks! (a)...
  22. P

    Discover the Flow Velocity of a River with this Boat Trip Calculus Problem

    A river flows with a uniform velocity v. A person in a motorboat travels 1.13 km upstream, at which time a log is seen floating by. The person continues to travel upstream for 68.4 min at the same speed and then returns downstream to the starting point, where the same log is seen again. Find the...
  23. K

    Listen to Richard Feynman's Lost Lecture on the Solar System

    Would you like to listen a lesson from Richard Feynman? OK OK. Click the link to listen a lesson about solar system. At the destination page click the link at the bottom.( 17.4 MB) Don't worry about the file size - it's screaming. Enjoy!:wink: http://kitap.tubitak.gov.tr/k177.html
  24. X

    Solving a Pool Leak: Calculating Inches Lost Per Hour

    Hello, again. I have a question problem, fairly simple, that I have most likely done wrong. It is about a pool leak. When the pools water pump is on, from 3:50pm to 10:10am the pool lost 2.25in. When the pump was turned off from 10:10am, to 1:50pm, it lost 7/8 in. They want to know how...
  25. Ivan Seeking

    Believers in the lost Ark: Guardian, UK

    "The explorer who discovered the Titanic beneath the Atlantic in 1985 is setting out on another underwater expedition to document Noah's flood. The Black Sea was originally a freshwater lake that in ancient times became inundated by the salty Mediterranean. Robert Ballard believes that this was...
  26. Kerrie

    Pluto: Lost Satellite of Neptune or Planet on its Own?

    I have always had a fascination of Pluto, is it labeled as a lost satellite of Neptune, or a planet on it's own because of Charon?
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