GPE and KE Introduction and Practice Worksheet
... 4. A diver has 3400 J of GPE after stepping onto a diving platform that is 6.0 m above water. What is the diver’s mass in kilograms? ...
... 4. A diver has 3400 J of GPE after stepping onto a diving platform that is 6.0 m above water. What is the diver’s mass in kilograms? ...
Conservation of Energy
... • Imagine two students standing side by side at the top of a water slide. One steps off of the platform, falling directly into the water below. The other student goes down the slide. Assuming the slide is frictionless, which student strikes the water with a greater speed? ...
... • Imagine two students standing side by side at the top of a water slide. One steps off of the platform, falling directly into the water below. The other student goes down the slide. Assuming the slide is frictionless, which student strikes the water with a greater speed? ...
Dimensions of Energy - ASU Modeling Instruction
... e) For a physical object or system at rest the transfer of an amount of energy ∆E results in a change in mass ∆E ∆m = 2 . c f) The rate at which energy is transferred may be thought of as an energy current. i) The rate of energy transfer through “working” is called “power.” ii) The rate of energy tr ...
... e) For a physical object or system at rest the transfer of an amount of energy ∆E results in a change in mass ∆E ∆m = 2 . c f) The rate at which energy is transferred may be thought of as an energy current. i) The rate of energy transfer through “working” is called “power.” ii) The rate of energy tr ...
5.02 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 ...
GEK - National University of Singapore
... 2). [Stellar Parallax] There are many ways to measure the distance of a, say, star from the earth, and one way to do that is through this technique, called stellar parallax. a) Explain how this is done? Parallax is the apparent shift of a foreground object relative to some distant background as the ...
... 2). [Stellar Parallax] There are many ways to measure the distance of a, say, star from the earth, and one way to do that is through this technique, called stellar parallax. a) Explain how this is done? Parallax is the apparent shift of a foreground object relative to some distant background as the ...
Kinetic and Potential Energy
... As it falls, its velocity goes up, so its kinetic energy goes up. It also looses height so its potential energy goes down. However, mechanical energy stays the same ME = KE + PE ...
... As it falls, its velocity goes up, so its kinetic energy goes up. It also looses height so its potential energy goes down. However, mechanical energy stays the same ME = KE + PE ...
Image Credit - Northwestern University
... The Answer: From the Cosmic Microwave Background (WMAP), we can intuit the percentages of normal matter, dark matter and ...
... The Answer: From the Cosmic Microwave Background (WMAP), we can intuit the percentages of normal matter, dark matter and ...
Activity 2 The Signature of the Stars
... spectrum. Astronomers can learn many things about a star’s motion, temperature, and composition by analyzing the starlight that reaches Earth. A spectroscope is an instrument that separates light into its spec ...
... spectrum. Astronomers can learn many things about a star’s motion, temperature, and composition by analyzing the starlight that reaches Earth. A spectroscope is an instrument that separates light into its spec ...
0708 - Astronomy
... balloon is stretched (multiplicatively) by some factor we need to think of the Universe the same way Can we trace the expansion back to the point where it began? that “point” is now the whole balloon/whole Universe... so no. ...
... balloon is stretched (multiplicatively) by some factor we need to think of the Universe the same way Can we trace the expansion back to the point where it began? that “point” is now the whole balloon/whole Universe... so no. ...
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. ...
Document
... 8. Name two forms of energy, and relate them to kinetic or potential energy. _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ 9. Give 3 examples of one form ...
... 8. Name two forms of energy, and relate them to kinetic or potential energy. _______________________________________________________________ _______________________________________________________________ _______________________________________________________________ 9. Give 3 examples of one form ...
Potential Energy - Indiana University Astronomy
... 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 ...
Kinetic and Potential Energy
... original position. The coin has potential energy, because it has ability to do work. Dropping the coin in the bank, changes the stored energy into motion. This transfers the coin’s energy from potential to kinetic energy. ...
... original position. The coin has potential energy, because it has ability to do work. Dropping the coin in the bank, changes the stored energy into motion. This transfers the coin’s energy from potential to kinetic energy. ...
How the universe began
... • Does this make the Earth the centre of the universe? • Scientists don’t think this is true • Blow up a balloon with spots all over it – all the spots get further away from each other ...
... • Does this make the Earth the centre of the universe? • Scientists don’t think this is true • Blow up a balloon with spots all over it – all the spots get further away from each other ...
Motion, Forces, and Energy
... Machines are devices that make work easier. Machines are those able to do work ( W = F • d ) with just one movement of the machine. Compound machines require more than one movement to do work. There are six simple machines: lever, pulley, wheel and axle, inclined plane, wedge, and screw. Since a mac ...
... Machines are devices that make work easier. Machines are those able to do work ( W = F • d ) with just one movement of the machine. Compound machines require more than one movement to do work. There are six simple machines: lever, pulley, wheel and axle, inclined plane, wedge, and screw. Since a mac ...
AS 60 - Astronomy of the Americas
... a. As you watch it over the course of a year, an approaching galaxy will appear to grow larger in angular size on the sky b. Spectral lines of elements will be observed in the galaxy’s spectrum at greater wavelengths than those for the same elements in the lab if a galaxy is receding from us c. Spec ...
... a. As you watch it over the course of a year, an approaching galaxy will appear to grow larger in angular size on the sky b. Spectral lines of elements will be observed in the galaxy’s spectrum at greater wavelengths than those for the same elements in the lab if a galaxy is receding from us c. Spec ...
Level 3 Cambridge Technical in Engineering Formula Booklet
... Other relevant formulae may be provided in some questions within examination papers. However, in most cases suitable formulae will need to be selected and applied by the learner. Clean copies of this booklet will be supplied alongside examination papers to be used for reference during examinations. ...
... Other relevant formulae may be provided in some questions within examination papers. However, in most cases suitable formulae will need to be selected and applied by the learner. Clean copies of this booklet will be supplied alongside examination papers to be used for reference during examinations. ...
Chapter 31 Galaxies & the Universe
... that the universe looks the same on large scales to all observers and that it has always looked that way ...
... that the universe looks the same on large scales to all observers and that it has always looked that way ...
Name Section
... has expanded at a constant rate. Based on this assumption, Hubble estimated Universe’s age at 19.6 billion years. The actual age of the Universe is 13.8 billion years. What could account for the difference in values? ...
... has expanded at a constant rate. Based on this assumption, Hubble estimated Universe’s age at 19.6 billion years. The actual age of the Universe is 13.8 billion years. What could account for the difference in values? ...
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.