Active Galactic Nuclei
... According to the Hubble Law, the space between the galaxies is constantly increasing, with Velocity = H0 D istance ...
... According to the Hubble Law, the space between the galaxies is constantly increasing, with Velocity = H0 D istance ...
PODSTAWY FIZYKI ŚRODOWISKA
... • isotropic: the universe looks the same in all directions on the sky there is no special direction (axis) • unchanging: The universe looks the same at all times there is no special epoch The cosmic microwave background radiation (CMB) = afterglow from the big bang. It’s smooth to 1 part in 105 yes, ...
... • isotropic: the universe looks the same in all directions on the sky there is no special direction (axis) • unchanging: The universe looks the same at all times there is no special epoch The cosmic microwave background radiation (CMB) = afterglow from the big bang. It’s smooth to 1 part in 105 yes, ...
The Universe: “Beyond the Big Bang” Video Questions
... 48. Where did the sounds that Penzias and Wilson heard originate? everywhere 49. What was the “smoking gun” that Penzias and Wilson discovered? cosmic background ...
... 48. Where did the sounds that Penzias and Wilson heard originate? everywhere 49. What was the “smoking gun” that Penzias and Wilson discovered? cosmic background ...
understanding-the
... a. The red shift indicates that distant galaxies are moving away from each other. b. The red shift indicates that distant galaxies are moving towards each other. c. The blue shift indicates that distant galaxies are moving away from each other. d. The blue shift indicates that distant galaxies are m ...
... a. The red shift indicates that distant galaxies are moving away from each other. b. The red shift indicates that distant galaxies are moving towards each other. c. The blue shift indicates that distant galaxies are moving away from each other. d. The blue shift indicates that distant galaxies are m ...
ASTR 1120-001 Final Examination Phil Armitage, Bruce Ferguson
... 52. Evidence for dark matter in galaxy clusters comes from: (a) X-ray emitting gas that is cooler, and galaxy velocities that are lower, than expected if there were no dark matter (b) X-ray emitting gas that is hotter, and galaxy velocities that are higher, than expected if there were no dark matter ...
... 52. Evidence for dark matter in galaxy clusters comes from: (a) X-ray emitting gas that is cooler, and galaxy velocities that are lower, than expected if there were no dark matter (b) X-ray emitting gas that is hotter, and galaxy velocities that are higher, than expected if there were no dark matter ...
Potential Energy
... mass-energy: energy is stored in matter itself this mass-energy is what would be released if an amount of mass, m, were converted into energy ...
... mass-energy: energy is stored in matter itself this mass-energy is what would be released if an amount of mass, m, were converted into energy ...
light energy
... Evidence that the universe is expanding and speeding up too – think of it as the first half of an explosion ...
... Evidence that the universe is expanding and speeding up too – think of it as the first half of an explosion ...
Energy Test Study Guide
... Explain the energy transformation between potential and kinetic energy o When juggling ...
... Explain the energy transformation between potential and kinetic energy o When juggling ...
energy - Denton ISD
... 2. Newton= Nuclear • Energy stored in the nucleus of an atom. The energy that holds the nucleus Example: Breaking together. down Uranium ...
... 2. Newton= Nuclear • Energy stored in the nucleus of an atom. The energy that holds the nucleus Example: Breaking together. down Uranium ...
Kiwi and Tinker Crate_November
... 3-PS2.A- Forces and Motion- Each force acts on one particular object and has both strength and a direction. An object at rest typically has multiple forces acting on it, but they add to give zero net force on the object. Forces that do not sum to zero can cause changes in the object’s speed or direc ...
... 3-PS2.A- Forces and Motion- Each force acts on one particular object and has both strength and a direction. An object at rest typically has multiple forces acting on it, but they add to give zero net force on the object. Forces that do not sum to zero can cause changes in the object’s speed or direc ...
Problem Set 5 - from Chapter 6 Exercises 2, 5, 7, 15, 18, 32
... 2. In order for you to get out of bed with the least amount of work, would it be better for your bed to be on the floor or about a meter high? Explain. It would be better if the bed were a meter high, because then you would not have to lift yourself up. (Gravity does the work for you, so you do not ...
... 2. In order for you to get out of bed with the least amount of work, would it be better for your bed to be on the floor or about a meter high? Explain. It would be better if the bed were a meter high, because then you would not have to lift yourself up. (Gravity does the work for you, so you do not ...
Holt Physics—Chapter 5: Work and Energy
... small k, strong springs have a large k) and are measured in N/m. b. x = the distance the object is stretched or compressed in meters (insert fig. 5-8) ...
... small k, strong springs have a large k) and are measured in N/m. b. x = the distance the object is stretched or compressed in meters (insert fig. 5-8) ...
Energy Review HW #2
... 11. Describe the energy transformation in a flashlight (energy changes from what to what?) ...
... 11. Describe the energy transformation in a flashlight (energy changes from what to what?) ...
Dark Matter Burners
... Could any of the “paradoxically young” stars near Sgr A* be white dwarfs burning dark matter? Answer: yes How can we demonstrate that any of these stars are white dwarfs burning dark matter? Answer: by measuring the gravitational redshift and temperature (or luminosity) If found, a population ...
... Could any of the “paradoxically young” stars near Sgr A* be white dwarfs burning dark matter? Answer: yes How can we demonstrate that any of these stars are white dwarfs burning dark matter? Answer: by measuring the gravitational redshift and temperature (or luminosity) If found, a population ...
Word - Sam Davyson
... reciprocal of the Hubble constant H0 This gives a way to find the age of the universe. However there are some problems. This assumes that the speed is constant for a galaxy. Due to gravity it isn’t which gives an over-estimate on the age of the universe. H0 is not precisely known. Using differen ...
... reciprocal of the Hubble constant H0 This gives a way to find the age of the universe. However there are some problems. This assumes that the speed is constant for a galaxy. Due to gravity it isn’t which gives an over-estimate on the age of the universe. H0 is not precisely known. Using differen ...
ONLINE practice exam
... (f) How long does it take this gas to make 1 orbit around the black hole? ...
... (f) How long does it take this gas to make 1 orbit around the black hole? ...
Lecture24
... universe must be finite, in space, time or both. This is fundamental test for any cosmological model The Big-bang explains Olbers’s paradox with the finiteness of the lifetime of the Universe and hence of its stars: The universe is NOT eternal in the past! The universe evolves! ...
... universe must be finite, in space, time or both. This is fundamental test for any cosmological model The Big-bang explains Olbers’s paradox with the finiteness of the lifetime of the Universe and hence of its stars: The universe is NOT eternal in the past! The universe evolves! ...
Types of Energy Outline 6.1
... A. If an object or organism does work, the object or organism uses energy. B. In addition to using energy to do work, objects gain energy because work is being done on them. C. The combination of energy and matter make up the universe. a. Matter is substance, energy is the mover of the substance. II ...
... A. If an object or organism does work, the object or organism uses energy. B. In addition to using energy to do work, objects gain energy because work is being done on them. C. The combination of energy and matter make up the universe. a. Matter is substance, energy is the mover of the substance. II ...
Dark energy
In physical cosmology and astronomy, dark energy is an unknown form of energy which is hypothesized to permeate all of space, tending to accelerate the expansion of the universe. Dark energy is the most accepted hypothesis to explain the observations since the 1990s indicating that the universe is expanding at an accelerating rate. Assuming that the standard model of cosmology is correct, the best current measurements indicate that dark energy contributes 68.3% of the total energy in the present-day observable universe. The mass–energy of dark matter and ordinary matter contribute 26.8% and 4.9%, respectively, and other components such as neutrinos and photons contribute a very small amount. Again on a mass–energy equivalence basis, the density of dark energy (6.91 × 10−27 kg/m3) is very low, much less than the density of ordinary matter or dark matter within galaxies. However, it comes to dominate the mass–energy of the universe because it is uniform across space.Two proposed forms for dark energy are the cosmological constant, a constant energy density filling space homogeneously, and scalar fields such as quintessence or moduli, dynamic quantities whose energy density can vary in time and space. Contributions from scalar fields that are constant in space are usually also included in the cosmological constant. The cosmological constant can be formulated to be equivalent to vacuum energy. Scalar fields that do change in space can be difficult to distinguish from a cosmological constant because the change may be extremely slow.High-precision measurements of the expansion of the universe are required to understand how the expansion rate changes over time and space. In general relativity, the evolution of the expansion rate is parameterized by the cosmological equation of state (the relationship between temperature, pressure, and combined matter, energy, and vacuum energy density for any region of space). Measuring the equation of state for dark energy is one of the biggest efforts in observational cosmology today.Adding the cosmological constant to cosmology's standard FLRW metric leads to the Lambda-CDM model, which has been referred to as the ""standard model of cosmology"" because of its precise agreement with observations. Dark energy has been used as a crucial ingredient in a recent attempt to formulate a cyclic model for the universe.