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L 1-3
L 1-3

... 1. e- can have only specific (quantized) energy values 2. light is emitted as e- moves from higher energy level to a lower energy level ...
The principle effect of gravitational potential
The principle effect of gravitational potential

... generated by its motion. This energy is part of its relativistic mass. Since it has not been found necessary to apply a relativistic correction in orbital mechanics to allow for an increase in relativistic mass, we can assume that relativistic mass and passive gravitational mass are equal. When the ...
Cell Energy
Cell Energy

... What are the energy transformations done by an iPod? List the transformation and the start and end energy types. Foundation level: transformations done by the iPod itself (general types of energy: potential & kinetic) Challenge level: include transformations that happen several steps before/after th ...
Energy - mrkearsley.com
Energy - mrkearsley.com

... Determine the kinetic energy of a 625 kg roller coaster  car that is moving with a speed of 18.3 m/s. ...
In Search of the Dark Matter in the Universe
In Search of the Dark Matter in the Universe

... interact with matter and the universe became transparent for electromagnetic radiation. This radiation from the early universe was first discovered by R. Wilson and A. Penzias in 1965. They received the Nobel prize for this finding in 1978. Their discovery was made by chance, since they were on a mi ...
Our Universe
Our Universe

1. Energy ~ the ability to cause change (makes things go, run, or
1. Energy ~ the ability to cause change (makes things go, run, or

... The player eats lunch and the chemical energy from his food is transferred to him. The chemical energy stored in his body is transferred into kinetic energy when he runs the bases. That kinetic energy is then transferred into thermal energy due to friction as he slides on the dirt into home plate. ...
Stars - Stallion Science
Stars - Stallion Science

... • If there isn’t enough mass – gravity will not be strong enough to stop the expansion • Just right amount of mass – the expansion will slow down but not end completely • Too much mass – gravity will overcome the expansion and the universe will start to contract (the big crunch), becoming very hot a ...
AST 341 - Homework IV - Solutions
AST 341 - Homework IV - Solutions

Energy and Energy Transfer PowerPoint
Energy and Energy Transfer PowerPoint

Potential-Kinetic Energy
Potential-Kinetic Energy

Grade 9 Physical Science Honors
Grade 9 Physical Science Honors

... atmosphere, temperature, orbital path, magnetic field, mass-gravity, location in solar system) provide a life-supporting environment Most of the information we know about the universe comes from the electromagnetic spectrum. • Identify information that the electromagnetic spectrum provides about the ...
Energy and Energy Resources
Energy and Energy Resources

... Nuclear Energy- The energy that comes from the nucleus of an atom.  Fission and fusion ...
What is Energy? Energy
What is Energy? Energy

... • Force is always kg* m/s2 is also called Newtons (N) • Mass is always measured in kilograms kg • Work and energy is always measured in Joules = N*m (J) ...
Study Guide: Conservation of Energy
Study Guide: Conservation of Energy

... When a mass is placed on a spring with spring constant of 150  N/m, the spring stretches a distance of 0.5 meters. How much  potential energy stored in the spring?  ...
8.1 kinetic and potential energy
8.1 kinetic and potential energy

... up to the top of the roof which is twice as  high...8 m tall.  So now find his GPE. Notice...in each case, if you release the object, it will move, so as it moves down, the  GPE gets converted to KE. Any object that is elevated has GPE. Any object that is at its lowest possible point has no GPE ...
LECTURE 2: I.Our Place in the Universe
LECTURE 2: I.Our Place in the Universe

MSSE 470S 5E Lesson Plan
MSSE 470S 5E Lesson Plan

... of drawing, both of which deal with visual representations. This is nice for ELLs because it does not force them to use their words all of the time. The same principle applies here for children with reading difficulties. This lesson involves a fair amount of movement and transition as well. This bod ...
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and Save - Workshops+SJCOE Workshop Management

... moving object and grows with the square of its speed • A system of objects may also contain stored (potential) energy, depending on their relative positions. • Temperature is a measure of the average kinetic energy of particles of matter. The relationship between the temperature and the total energy ...
Matter Classification
Matter Classification

... Temperature Mole ...
Work, Energy and Power Chapter 5 Work • Work is done when a
Work, Energy and Power Chapter 5 Work • Work is done when a

... Example: lifting object from floor to table involves same amount of work no matter  what route is taken. When returned to floor, same amount of work can be extracted.  Dissipative Forces  Total work around closed path is not zero.  Work done depends on length of path  Main dissipative force is frict ...
May 2008 - University of Michigan
May 2008 - University of Michigan

Energy
Energy

... • Energy carried by electromagnetic waves. Light energy is one type of these energies. http://www.nasa.gov/centers/langley/images/content/114284main_EM_Spectrum500.jpg&imgrefurl=http://www.nasa.gov/centers/langley/science/FIRST_prt.htm &usg=__VVUKc2-ReBx_iG9MsP9R6VXr_7s=&h=317&w=500&sz=67&hl=en&star ...
Energy Notes
Energy Notes

... Potential energy - stored energy that results from the position or shape of an object This type of energy has the potential to do work. ...
Mechanics Isaac Newton 25 December 1642
Mechanics Isaac Newton 25 December 1642

... on the surface of the Earth, at a distance RE from the center ...
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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.
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