• Study Resource
  • Explore
    • Arts & Humanities
    • Business
    • Engineering & Technology
    • Foreign Language
    • History
    • Math
    • Science
    • Social Science

    Top subcategories

    • Advanced Math
    • Algebra
    • Basic Math
    • Calculus
    • Geometry
    • Linear Algebra
    • Pre-Algebra
    • Pre-Calculus
    • Statistics And Probability
    • Trigonometry
    • other →

    Top subcategories

    • Astronomy
    • Astrophysics
    • Biology
    • Chemistry
    • Earth Science
    • Environmental Science
    • Health Science
    • Physics
    • other →

    Top subcategories

    • Anthropology
    • Law
    • Political Science
    • Psychology
    • Sociology
    • other →

    Top subcategories

    • Accounting
    • Economics
    • Finance
    • Management
    • other →

    Top subcategories

    • Aerospace Engineering
    • Bioengineering
    • Chemical Engineering
    • Civil Engineering
    • Computer Science
    • Electrical Engineering
    • Industrial Engineering
    • Mechanical Engineering
    • Web Design
    • other →

    Top subcategories

    • Architecture
    • Communications
    • English
    • Gender Studies
    • Music
    • Performing Arts
    • Philosophy
    • Religious Studies
    • Writing
    • other →

    Top subcategories

    • Ancient History
    • European History
    • US History
    • World History
    • other →

    Top subcategories

    • Croatian
    • Czech
    • Finnish
    • Greek
    • Hindi
    • Japanese
    • Korean
    • Persian
    • Swedish
    • Turkish
    • other →
 
Profile Documents Logout
Upload
Chapter 19. Mapping the Universe from Herschel to Sloan
Chapter 19. Mapping the Universe from Herschel to Sloan

Powerpoint
Powerpoint

Lecture5
Lecture5

... If M = 2.5 kg and the acceleration, a = 3.0 m/s2: a) At what angle does the ball swing backwards? b) What is the tension in the string? ...
Newton`s Second and Third Laws of Motion
Newton`s Second and Third Laws of Motion

NIE10x301Sponsor Thank You (Page 1)
NIE10x301Sponsor Thank You (Page 1)

... The constellation Leo, rising in the east after dark in the Spring, is another rich hunting ground for galaxies; the Leo Group resides in space behind it, about 40 million ly distant. Two groups of galaxies are visible under the belly and haunches of the Lion; a star chart will help you. M65 and M66 ...
Text Teaching Strategies Final Grade Mechanics
Text Teaching Strategies Final Grade Mechanics

Milanković`s Analysis of Newton`s Law of Universal Gravitation
Milanković`s Analysis of Newton`s Law of Universal Gravitation

... Newton conducted the analysis of the motion of a body along all curves of conical intersection and thereafter he definitely approached the problem of body’s motion under the action of forces of mutual attraction. In the chapter “On motion of the bodies mutually attracted by centripetal forces”, p. 2 ...
JPO 152 Assignment 6 Rotation Due date: 20 th May
JPO 152 Assignment 6 Rotation Due date: 20 th May

What we will do today:
What we will do today:

... This law states that there is a force of attraction between any two objects in the universe. The size of the force is proportional to the product of the masses of the two objects, and inversely proportional to the square of the distance between them. ...
Forces part1
Forces part1

... • We will not use the term "weight of an object" because it implies that weight is a property of the object rather than an © 2014 Pearson interaction between two objects. Education, Inc. ...
external forces. - Mahidol University
external forces. - Mahidol University

... an inertial frame, and for our purposes we can consider the Earth as being such a frame. The Earth is not really an inertial frame because of its orbital motion around the Sun and its rotational motion about its own axis, both of which result in centripetal accelerations. However, these acceleration ...
1030 version
1030 version

... Presumably, each of you obtained similar, but not necessarily identical, values for the drop distance, the elapsed time, and the calculated acceleration for each experimental trial. If the measurements were not identical, it does not mean that the distance, time, or acceleration actually changed bet ...
Name
Name

... 43. What are two ways to increase the acceleration of an object? ____________________________________________________________________ ____________________________________________________________________ 44. What is Newton’s third law? _________________________________________________________________ ...
Gestalting Structures in Physics
Gestalting Structures in Physics

Circular Motion - Paso Robles High School
Circular Motion - Paso Robles High School

Key - Friction Packet
Key - Friction Packet

From last time… - University of Wisconsin–Madison
From last time… - University of Wisconsin–Madison

... To every action there is always opposed an equal reaction. This is momentum conservation in the language of forces. ...
forces - jpsaos
forces - jpsaos

... forces on each other. They give materials their strength, their ability to bend, squeeze, stretch or shatter. When charged particles are in motion they produce magnetic forces on each other. Electric and magnetic forces are both considered to be aspects of this single force. ...
From last time Mass a F Force, weight, and mass Is `pounds` really
From last time Mass a F Force, weight, and mass Is `pounds` really

... 3rd law: Law of force pairs • Every force is an interaction between two objects • Each of the bodies exerts a force on the other. • The forces are equal and opposite ...
MomentumImpulse
MomentumImpulse

... When two objects—such as a hammer and a nail, a golf club and a golf ball, or even two cars—collide, they can exert large forces on one another for a short period of time. The force is not constant in this case. However, Newton’s second law in momentum form is still useful for analyzing such situati ...
9J Gravity and Space
9J Gravity and Space

Option H: Relativity
Option H: Relativity

... ●During a total eclipse, the moon blocks out the sun entirely on certain parts of the Earth to such an extent that you can see stars near the disk of the sun. ●In fact, stars that were behind the sun were expected to be seen, according to the general theory, because of the bending of light by its st ...
3 inertia newtons fi..
3 inertia newtons fi..

Handout from Allaire Star Party
Handout from Allaire Star Party

File
File

... Force, Mass, and Motion  Combining the effects of mass and force… ...
< 1 ... 227 228 229 230 231 232 233 234 235 ... 432 >

Modified Newtonian dynamics



In physics, modified Newtonian dynamics (MOND) is a theory that proposes a modification of Newton's laws to account for observed properties of galaxies. Created in 1983 by Israeli physicist Mordehai Milgrom, the theory's original motivation was to explain the fact that the velocities of stars in galaxies were observed to be larger than expected based on Newtonian mechanics. Milgrom noted that this discrepancy could be resolved if the gravitational force experienced by a star in the outer regions of a galaxy was proportional to the square of its centripetal acceleration (as opposed to the centripetal acceleration itself, as in Newton's Second Law), or alternatively if gravitational force came to vary inversely with radius (as opposed to the inverse square of the radius, as in Newton's Law of Gravity). In MOND, violation of Newton's Laws occurs at extremely small accelerations, characteristic of galaxies yet far below anything typically encountered in the Solar System or on Earth.MOND is an example of a class of theories known as modified gravity, and is an alternative to the hypothesis that the dynamics of galaxies are determined by massive, invisible dark matter halos. Since Milgrom's original proposal, MOND has successfully predicted a variety of galactic phenomena that are difficult to understand from a dark matter perspective. However, MOND and its generalisations do not adequately account for observed properties of galaxy clusters, and no satisfactory cosmological model has been constructed from the theory.
  • studyres.com © 2025
  • DMCA
  • Privacy
  • Terms
  • Report