Universal Definition and 488 Threads

Universal Pictures (legally Universal City Studios LLC, also known as Universal Studios, and formerly named Universal Film Manufacturing Company and Universal-International Pictures Inc.) is an American film production and distribution company owned by Comcast through the NBCUniversal Film and Entertainment division of NBCUniversal.
Founded in 1912 by Carl Laemmle, Mark Dintenfass, Charles O. Baumann, Adam Kessel, Pat Powers, William Swanson, David Horsley, Robert H. Cochrane, and Jules Brulatour, it is the oldest surviving film studio in the United States; the world's fifth oldest after Gaumont, Pathé, Titanus, and Nordisk Film; and the oldest member of Hollywood's "Big Five" studios in terms of the overall film market. Its studios are located in Universal City, California, and its corporate offices are located in New York City. In 1962, the studio was acquired by MCA, which was re-launched as NBCUniversal in 2004.
Universal Pictures is a member of the Motion Picture Association (MPA), and was one of the "Little Three" majors during Hollywood's golden age.

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  1. T

    Solving Universal law of Gravitation as differential equation

    Hi, I'm trying to solve Newton Universal law of Gravitation as a differential equation in one dimension with two objects. One mass is fixed at distance r = 0, whilst the other is some initial distance away. I'm using distance rather than displacement and also ignored the proportionality factor...
  2. D

    Newtons law of universal gravatational

    im stuck with this problem: the question asked for the gravatational force of attraction between moon and Earth while the moon's radius is not given. do i need the moon's radius? since r is the distance from the center of moon to the center of Earth (right?) and the second question of the same...
  3. G

    Universal Medium: Heat as the Universe's Universal Medium?

    If everywhere in the universe is at above 0 degrees Kelvin, then there must be some degree of heat everywhere, so this could be considered a universal medium or not, and if what I heard about the sound of the big bang still reverberating throughout the universe is correct (see my contribution to...
  4. W

    Is there really a universal constant?

    What do you think, is there something in this universe that does not change, no matter who looks upon it or from where? Is the speed of light the constant that it can be claimed to be? If there is no constant, then what are we comparing everything to, for example in chemistry, standard...
  5. C

    What Is the Net Force on the Moon During Eclipses?

    Homework Statement mass of star = 2.53 x 1030 kilograms mass of planet = 5.25 x 1024 kilograms mass of moon = 8.09 x 1022 kilograms average distance from star to planet = 1.14 x 1011 meters average distance from planet to moon = 4.59 x 108 meters Use the data above to determine the net...
  6. M

    How Does Universal Gravitation Apply in Planetary Simulation Errors?

    Most likely a basic question to most, been awhile since I've done any of this. If i remember right the formula states, F = G*M_1*M_2/d^2 where d = distance between M_1 and M_2 Im creating a planetary simulator for fun, i get the initial position of the Earth using the 7 variable Astrological...
  7. T

    Speed of light and universal expansion.

    The biggest chunk of evidence for expansion of the universe is the whole red-shift/Doppler effect deal, saying that as something that emits light while traveling away from the observer, the wavelength of the light will be "stretched" making it appear red. There is one thing I'm wondering. Could...
  8. X

    Quick question about universal gravitation collisions.

    When two masses collide, assuming there are no external forces on the system of the two masses, will they collide with the same velocities or will it depend on the conserved momentum? Edit -- Assume they're released from rest, since that's what the problem I'm working on states.
  9. P

    Universal Gravitation: Einstein's Warping of Space and Time

    I'm new to the physics forums so correct me if I'm in the wrong place. We started a new unit on universal gravitation in my physics class, and I'm not sure I understand the following passage from the beginning of the chapter: "Albert Einstein made the amazing discovery that gravity arises...
  10. R

    Is the d'Alambert principle universal?

    In a lecture on classical mechanics, the professor derived a formula, which is a part of the D'Alambert principle: \nabla \Phi_{\alpha} \cdot \delta \vec{r} = 0 where \Phi_{\alpha} are the restraints. He derived it in a strange way from the Taylor's formula: \Phi_{\alpha} (\vec{r} + \delta...
  11. Z

    Universal expansion reaching a point of equiblirium

    The two possibilities generally presented on the expansion of the universe is that either the universe will continue to expand, or it will eventually cease expansion and compress back to a singularity. Is there a third possibility? Has anyone presented a coherent idea that allows for the...
  12. M

    Universal Gravitation and Satelite Motion

    A couple of questions that I am struggling with again...that I really need to figure out ASAP On the way to the Moon the Apollo astronauts reached a point where the Moon's gravitational pull became stronger than the Earth's. (a) Determine the distance of this point from the center of the...
  13. B

    Universal Gravitational constant

    At the Earth's surface a projectile is launched straight up at a speed of 10.1 km/s. To what height will it rise? Universal gravitational constant = 6.673e-11 N m^2/kg^2 Radius of the Earth = 6.370e+6 m Mass of the Earth = 5.980e+24 kg I know to use the equation U= - (Gm1m2)/ r but I...
  14. B

    How High Will a Projectile Rise if Launched at 10.1 km/s?

    At the Earth's surface a projectile is launched straight up at a speed of 10.1 km/s. To what height will it rise? Universal gravitational constant = 6.673e-11 N m^2/kg^2 Radius of the Earth = 6.370e+6 m Mass of the Earth = 5.980e+24 kg I know to use the equation U= - (Gm1m2)/ r I also...
  15. J

    Energy States of Electrons in Free Space

    the energy of an electron in free space = the continuous state. The energy of an electron near the nucleus of an atom = the discontinuous state. Are there other states? Is there a theory of states.
  16. R

    Searching for a Universal Book of Equations

    Hello, Is there a universal book of equation out there? -A book with a wide range of topics, from simple motion to complex electronics, that has equations that may be of practical(or not so practical) purpose. Perhaps this is more of a physics book I am looking for, but I thought the...
  17. M

    Does the Law of Universal Gravitation Apply to Quantum Levels?

    hello all i was wondering if we could use Newton's F=GMn/r^2 to apply it to non-point masses, and specifically, if they two masses come completely within each other, would it still hold?
  18. E

    Universal laptop power supply?

    "Universal" laptop power supply? My father had an extra laptop lying around that despite being old and having had it's monitor separate from it's chassis was in perfect working order. Or such was the case several months ago - I dusted it off today and it refused to start. I got out my...
  19. U

    Reading on Newton's law of universal gravitation

    i was doing some reading on Newton's law of universal gravitation. the equation is given as mass of 2 objects divided by distances square and then multiply by gravitation constant. using 50kg and 100 kg mass and a distance of 2 metres i get a value 8.34e-8 N this a small force, which sets me...
  20. garrett

    Quantum mechanics from a universal action reservoir?

    Hello all, I have a wacky idea in a field I don't usually play in, and I would greatly appreciate feedback on it -- positive or, preferably, negative. The basic idea is to derive quantum mechanics -- getting the path-integral formulation, quantum partition function, and wavefunction from...
  21. Jameson

    Exploring Love: Defining the Meaning of a Universal Concept

    The human concept of love has been something that has puzzled me for some time now, but I must admit I've many a time used those three words that by observation of the world around me seem meaningless ("I love you") I claim that words are a means of expressing thoughts, feelings, emotions...
  22. J

    How High is an Object When Its Speed is 27% of Escape Velocity?

    Hello all, I was wondering if someone could please help me with a problem. It is regarding the law of universal gravitation, this time using conservation of mechanical energy. We know that F = GMm/R^2 **If a projectile is launched from Earth with a speed equal to the escape speed, how...
  23. P

    How universal are the laws of physics?

    Is there irrefutable evidence that the laws as we know them apply to all the galaxies in the observable universe with a fine tuned universal degree of accuracy throughout, or is it more likely that they vary from one galaxy (or galactic cluster) to another? Do you have any links that explain this?
  24. A

    Universal Regeneration: Is Expansion Recycled?

    Is it possible that maybe the universe always expands in the same phsical place every time it expands, after collapse? Or is the only viable theory that the universe floats through empty space? I know this is a dumb question, but please, any insight is useful.
  25. D

    Calculating Escape Speed and Orbital Energy in Universal Gravitation

    1.) Consider attached image (P13.41). Determine the escape speed for a rocket on the far side of Ganymede. The escape speed from Ganymede without Jupiters influence would be \sqrt{\frac{2GM_{gan.}}{r_{gan.}}}. Now the ship will have a velocity equal to that of the escape velocity needed to...
  26. H

    How Do I Calculate Gravitational Force Between Two Objects?

    Can anyone help me with this problem? Approximate the gravitational force of attraction between a 46.0 kg girl and a 52.0 kg boy if they are sitting 3.0 m apart in physics class. Since the formula is [(m1m2/r^2)]G=Fg. So I first tried [(46+52)/3^2]6.67e-11 and I got 7.27e-10. Then when...
  27. E

    How Far Does the Moon Fall Toward Earth in One Second?

    The center-to-center distance between Earth and Moon is 384400 km. The Moon completes an orbit in 27.3 days. (b) If gravity were switched off, the Moon would move along a straight line tangent to its orbit, as described by Newton's first law. In its actual orbit in 1.00 s, how far does the Moon...
  28. K

    Universal Mountain/Sea Thermometer

    Taking the definition we have in Europe (I don't know the US version of it) of temperature (we use Celsius Degree here most of the time) : 0° is defined as the triple point of water, and 100° the boiling point. Then I suppose it is usual to make a linear approx (dilatation is linear in first...
  29. Z

    Question - Universal Speed Limit

    I understand that nothing--object or influence--can travel faster than c. However, something isn't quite clear to me. Let's assume we have a solid rod or a cylinder that has any given radius and a light-year in length. If the cylinder is at first at rest, and then we apply a torque to this...
  30. V

    The variable R as the Universal Gas Constant

    Please Help! Extra Credit assignment due soon! Why is the variable R used as the universal gas constant as apposed to another other letter or symbol?
  31. H

    Law Of Universal Gravition (am I Right?)

    A certain neutron star has five times the mass of our sun packed into a sphere about 10km in radius. estimate the surface gravity on this monster. = (5)(1.99 *10^30 =m 10km =r g = G mass of earth/r^2 = 6.67* 10^ -11 9.95* 10^30/10^2 = 6.64m/s Is that the right answer? Calculate...
  32. T

    Universal Gravitation on escape velocity

    On dealing with Universal Gravitation topic, I came across this question: what is the min speed, relative to the sun, necessary for a spacecraft to escape the solar system if it starts at the Earth's orbit? My working: v=sqrt(2GM/R), where G=universal constant, R= distance between Earth...
  33. A

    Universal gravitation and inclines

    There's an inclined plane with theta unknown. The frictional coefficient is 0. m1 is higher on the inclined plane than m2. m1 = 1680kg m2 = 152kg Distance between the two: 11mm At what angle of inclination will the 2nd mass begin to slide down the plane? Normally (without 2 objects)...
  34. J

    Universal Gravitation questions

    1) if something is 5 Earth radii above the Earth's surface and you know its mass, how would you figure out force of gravity on it? 2)and given the radius and mass of a planet how would you be able to figure out the acceleration due to gravity on it?
  35. K

    Can the Universal Set be Defined as the Union of Two Sets?

    Let's say I have to prove something about two sets and I want to make use of the notion of the universal set. Is it OK then to define the universal set as the union of these two sets? - Kamataat
  36. D

    Calculating the Height for Half Weight at Earth's Surface

    At what height above the Earth's surface would an object's weight be one half the value at the surface? W = m(2)g = Gm(1)(m2) / r^2 is the formula I am using. I found 1/2 weight to be 2.92825 x 10^25 Then I found m(1) to be 1/2gxW (not sure if I should've used 1/2g here or not) and then...
  37. mattmns

    Universal Quantifier: Determining Truth Value in Existential Statements

    I have a question that says, determine the truth value of: \exists x \ni \forall y, \exists z \ni xz = y I am thinking this is false because: If you let x = 0, and let y = 1, then there is no value of z that will make the statement true. Am I thinking about this correctly?
  38. S

    Dimensional analysis universal gravitation

    Firstly, I admit that my math skills are fairly rusty. I also admit that this is a homework problem. It is not to be turned in for a grade however. The problem is to determine the SI units of G in the following equation: F = GMm/r^2 (where F is force (mass *...
  39. C

    Universal Expansion: Faster Than Light?

    As far as I know it's generally accepted that the entire universe is expanding; however, I recall hearing or reading that as far as we can observe, it is expanding faster than the speed of light. How is this possible? Assuming that it is in fact expanding faster than the speed of light, of...
  40. B

    How Did Newton Derive Universal Gravitation?

    :confused: Hello I need some help understanding Newtons universal gravitation. I read on a site that an objects Force on Earth is its mass x gravity(on earth) hence MG (like F=MA). Then they say using Newtons inverse square law that the same object at a distance of the moon would have the...
  41. E

    Universal gas, Boltzmann's constant

    I understand the formulas involved and numerical values of these constants and in the respective units . However I'm still having troubling understanding exactly what it is these two constants define. Does Universal gas constant say that For every mol times Kelvin there is 8.315J ? I don't...
  42. B

    Ideal Gas Constant: Universal Constant or Relative?

    Is the Ideal Gas Constant a universal constant? *If not, then what is it relative to?
  43. A

    Speed of light is a universal constant

    I wonder that speed of light is a universal constant but why its so that it doesn't change wrt observers in different ref frames. an object moving with some velocity V1 wrt another object will be at rest wrt a third object (that is also moving with a velocity V1). but speed of light will be same...
  44. Loren Booda

    Can Religion and Physics Find Common Ground in Universal Ethics?

    Is the unification of religion possible, and if so, what tenets might make it so?
  45. Loren Booda

    Random walk and universal expansion

    Can the Hubble expansion be explained in terms of spacetime events undergoing a random walk?
  46. B

    Why doesn't the moon fall to Earth?

    Hello I'm a beginner in physics and came across an explanation for Gravitation, it explains it using the moons orbit around Earth as an example, they also say firing a projectile at a certain velocity can put that projectile in orbit, but they confused me with that one, can anyone help? this is...
  47. Clausius2

    Universal Dynamics of Tumor Growth: A Breakthrough

    A work of an spanish applied mathematician, Antonio Brú, has caused a shock here. Spain has a large tradition in the fight against Cancer, and has great sciencists working in this topic. Take a look at this article: http://www.biophysj.org/cgi/content/full/85/5/2948 (The Biophysical...
  48. E

    Universal Movement: Exploring Cosmology, Physics & More

    First of all this is my first post on this forum, or any other forum of this type. I am extremely interested in cosmology, physics etc. on a personal knowledge level. I usually just read stuff on the web, but I am glad to have found a place where people actually actively talk about this. I...
  49. A

    What Are the Missing Planets in the Sequence?

    ? - ? - ? - V - E - N - U - S - ? Find the missing letters indicated by ?
  50. R

    Is Time Dilation Affected by Varying Mass Density in Identical Universes?

    Relativists have told me that the only acceptable metrics discovered for an expanding universe, so far, are the conformal "Robertson-Walker" type metrics: ds^2 = a(t)^2 [ -dt^2 + dr^2 ] where t is the "conformal time". the theoretical and experimental investigation of a(t)...
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