Energy
... of all the randomly moving water molecules is the thermal energy of the water. To have a large thermal energy, an object must have (1) a high temperature (large v) & (2) many molecules and atoms (large m). ...
... of all the randomly moving water molecules is the thermal energy of the water. To have a large thermal energy, an object must have (1) a high temperature (large v) & (2) many molecules and atoms (large m). ...
CHEMICAL ENERGY is the energy stored in the bonds between
... MECHANICAL POTENTIAL ENERGY is energy stored in objects due to shape or position. Compressed springs, stretched rubber bands, an apple hanging from a tree, and a parked car at the top of a hill are examples. ...
... MECHANICAL POTENTIAL ENERGY is energy stored in objects due to shape or position. Compressed springs, stretched rubber bands, an apple hanging from a tree, and a parked car at the top of a hill are examples. ...
Chapter 34: Cosmology FYI 1. Radar Ranging 2. Triangulation idea
... discrete spectrum from hydrogen atoms moving with a star or galaxy away from the viewer “Red Shift” – faster moving stars are farther away, ...
... discrete spectrum from hydrogen atoms moving with a star or galaxy away from the viewer “Red Shift” – faster moving stars are farther away, ...
chapter 9 - lazyoldjohn.org
... How many different forms of energy can you think of? Take 1 minute with an elbow partner and write down as many things you know about energy ...
... How many different forms of energy can you think of? Take 1 minute with an elbow partner and write down as many things you know about energy ...
Kinetic and Potential Energy
... • If you are asked to solve for potential energy use • PE = mgh or PE = Fgh • If you are asked to solve for mass use • m = PE/gh or m = PE/Fgh • If you are asked to solve for height use • h = PE/mg or use h = PE/Fg ...
... • If you are asked to solve for potential energy use • PE = mgh or PE = Fgh • If you are asked to solve for mass use • m = PE/gh or m = PE/Fgh • If you are asked to solve for height use • h = PE/mg or use h = PE/Fg ...
Energy - murraysphysical
... II. Conservation of Energy A. Energy conversions—energy changing from one _________ to another 1. Fuels store energy in the form of _______________________ energy. 2. ______________ energy—the total amount of potential and kinetic energy in a system B. Law of Conservation of Energy—Energy may change ...
... II. Conservation of Energy A. Energy conversions—energy changing from one _________ to another 1. Fuels store energy in the form of _______________________ energy. 2. ______________ energy—the total amount of potential and kinetic energy in a system B. Law of Conservation of Energy—Energy may change ...
Atomic Clocks and Gravitational Field Strength
... particles. Kinetic energy is therefore a pressure which is induced either by acceleration or when a fine-grained angular acceleration wave emitted from one body delivers kinetic energy into another body during a collision [5]. When this happens, the other body then linearly accelerates. It is propos ...
... particles. Kinetic energy is therefore a pressure which is induced either by acceleration or when a fine-grained angular acceleration wave emitted from one body delivers kinetic energy into another body during a collision [5]. When this happens, the other body then linearly accelerates. It is propos ...
5.11 Potential and Kinetic Energy
... Units: Joules (1 J = 1 N•m) Example: What is the kinetic energy of a 24 kg ball that is moving with a velocity of 2 m/s? KE= m x v2 ...
... Units: Joules (1 J = 1 N•m) Example: What is the kinetic energy of a 24 kg ball that is moving with a velocity of 2 m/s? KE= m x v2 ...
What Is Energy?
... 1. A rollercoaster at the top of a hill OR at the bottom of a hill. Top—higher objects have more PE 2. A bowling ball dropped off the top of a building OR a golf ball dropped off the top of a building. Bowling ball—objects with more weight have more PE ...
... 1. A rollercoaster at the top of a hill OR at the bottom of a hill. Top—higher objects have more PE 2. A bowling ball dropped off the top of a building OR a golf ball dropped off the top of a building. Bowling ball—objects with more weight have more PE ...
Unit 11: Dark Energy
... But the next person over, in any direction, has gone from 2 meters away to 4, thus receding at 2 meters per second. Similarly, the next person beyond has moved away at 3 meters per second. Space that is stretching out in all directions will look just like Hubble's Law for everyone, with nearby objec ...
... But the next person over, in any direction, has gone from 2 meters away to 4, thus receding at 2 meters per second. Similarly, the next person beyond has moved away at 3 meters per second. Space that is stretching out in all directions will look just like Hubble's Law for everyone, with nearby objec ...
7.1 What is energy?
... 7.1 Some forms of energy Mechanical energy is the energy possessed by an object due to its motion or its position. Potential energy and kinetic energy are both forms of mechanical energy. ...
... 7.1 Some forms of energy Mechanical energy is the energy possessed by an object due to its motion or its position. Potential energy and kinetic energy are both forms of mechanical energy. ...
Work and Energy
... • Imagine: After a heavy snowstorm Ryan’s car gets stuck in the snow. He asks you to help him move it, and you agree to help. You shovel snow away from the car and try to push it backwards. Although you both try as hard as you can, the car will just not move. You and Ryan are both exhausted and deci ...
... • Imagine: After a heavy snowstorm Ryan’s car gets stuck in the snow. He asks you to help him move it, and you agree to help. You shovel snow away from the car and try to push it backwards. Although you both try as hard as you can, the car will just not move. You and Ryan are both exhausted and deci ...
Lecture6
... If baryonic, it could be due to massive, compact halo objects (MACHOs). They don’t seem to be enough. If non-baryonic (as likely), dark matter could be made of elusive, massive particles (WIMPs), or massive neutrinos. Searches have proved inconclusive so far. The possibility remains that Newtonian g ...
... If baryonic, it could be due to massive, compact halo objects (MACHOs). They don’t seem to be enough. If non-baryonic (as likely), dark matter could be made of elusive, massive particles (WIMPs), or massive neutrinos. Searches have proved inconclusive so far. The possibility remains that Newtonian g ...
CopyofEnergyTypesandTransformationsWorksheets (Repaired)
... 27. When you climb a rope, you change _____________________energy into __________________energy. 28. Energy can never be created nor destroyed, just ___________________ or ______________________. 29. As temperature increases, ____________________ energy increases. 30. Fireworks change ______________ ...
... 27. When you climb a rope, you change _____________________energy into __________________energy. 28. Energy can never be created nor destroyed, just ___________________ or ______________________. 29. As temperature increases, ____________________ energy increases. 30. Fireworks change ______________ ...
Astro-2: History of the Universe
... Quite the opposite, the age of the oldest stars in the Universe are remarkably consistent with the age of the universe itself, at any redshift where we can measure it. This does not prove that the model is right, but is a great triumph of the theories of the big bang and that of stellar ...
... Quite the opposite, the age of the oldest stars in the Universe are remarkably consistent with the age of the universe itself, at any redshift where we can measure it. This does not prove that the model is right, but is a great triumph of the theories of the big bang and that of stellar ...
Practice Questions for Final
... A. prior to this time, the electroweak and strong forces were indistinguishable from each other, but after this time they behaved differently from each other B. following this time, neither the strong nor electroweak forces are ever important in the universe again C. these forces are important only ...
... A. prior to this time, the electroweak and strong forces were indistinguishable from each other, but after this time they behaved differently from each other B. following this time, neither the strong nor electroweak forces are ever important in the universe again C. these forces are important only ...
ENERGY
... with a speed of 2.0 m/s starts up a ramp. How high does the truck roll before it stops? • A 2.0-kilogram ball rolling along a flat surface starts up a hill. If the ball reaches a height of 0.63 meters, what ...
... with a speed of 2.0 m/s starts up a ramp. How high does the truck roll before it stops? • A 2.0-kilogram ball rolling along a flat surface starts up a hill. If the ball reaches a height of 0.63 meters, what ...
Energy
... Energy is the ability to do work * Work is done when a force moves an object through a distance. * Work = Force X Distance * Work is a transfer of energy * Work and energy are measured in Joules (J) * 1 Joule = 1 Newton*meter ...
... Energy is the ability to do work * Work is done when a force moves an object through a distance. * Work = Force X Distance * Work is a transfer of energy * Work and energy are measured in Joules (J) * 1 Joule = 1 Newton*meter ...
Chapter 3
... destroyed. Organisms obtain light energy from sunlight or chemical energy from food and change the energy into different forms, including heat energy. • Matter can exist in one of several different states, including a gas, liquid, or solid state. States of matter differ in the amount of energy their ...
... destroyed. Organisms obtain light energy from sunlight or chemical energy from food and change the energy into different forms, including heat energy. • Matter can exist in one of several different states, including a gas, liquid, or solid state. States of matter differ in the amount of energy their ...
CosmologyL1
... just a few millionths of a degree hotter than the blue and black areas. This tiny difference helped seed the formation of galaxies out of the shapeless gas that filled the early universe. CMB, the remnant heat from the Big Bang, has a temperature which is highly uniform over the entire sky. This fac ...
... just a few millionths of a degree hotter than the blue and black areas. This tiny difference helped seed the formation of galaxies out of the shapeless gas that filled the early universe. CMB, the remnant heat from the Big Bang, has a temperature which is highly uniform over the entire sky. This fac ...
Galaxy clusters - University of Iowa Astrophysics
... source, we can figure out the total mass in the lens. This provides an independent confirmation of dark matter. • A lense can act as a huge telescope. The deepest images of the most distant galaxies are obtained with clusters acting as gravitational lenses. ...
... source, we can figure out the total mass in the lens. This provides an independent confirmation of dark matter. • A lense can act as a huge telescope. The deepest images of the most distant galaxies are obtained with clusters acting as gravitational lenses. ...
Misconceptions in Cosmology and how to correct them
... energy concept is totally invalidated – simple! However, this does not mean Tryon was correct because he based his theory on Newton’s mechanics that assumes no mass change occurs. In fact the concept of gravitational potential energy has to abandoned and replaced by the aforementioned model when an ...
... energy concept is totally invalidated – simple! However, this does not mean Tryon was correct because he based his theory on Newton’s mechanics that assumes no mass change occurs. In fact the concept of gravitational potential energy has to abandoned and replaced by the aforementioned model when an ...
Phy107Fall06Lect19
... • Extrapolating backwards indicates that all the galaxies originated from the same source 14 billion years ago. • In 1964 radiation from the early stages of that explosion was detected. – Again the Doppler shift was the key since the waves were shifted to low frequency - microwave Phy107 Fall 2006 ...
... • Extrapolating backwards indicates that all the galaxies originated from the same source 14 billion years ago. • In 1964 radiation from the early stages of that explosion was detected. – Again the Doppler shift was the key since the waves were shifted to low frequency - microwave Phy107 Fall 2006 ...
Energy
... Energy can be converted from one form to another but can be neither created nor destroyed The energy in the universe is constant ...
... Energy can be converted from one form to another but can be neither created nor destroyed The energy in the universe is constant ...
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.