• 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
II_Ch3
II_Ch3

... force acting on X becomes zero after the string breaks. ...
Powerpoint
Powerpoint

Name:
Name:

Ch. 7 PP - Lemon Bay High School
Ch. 7 PP - Lemon Bay High School

... gravitation to find the value of G and Earth’s mass. • When two masses, the distance between them, and the gravitational force are known, Newton’s law of universal gravitation can be used to find G. • Once the value of G is known, the law can be used again to find Earth’s mass. ...
3 Newton`s First Law of Motion—Inertia
3 Newton`s First Law of Motion—Inertia

... km/s. A good explanation for why it doesn’t is that a. the sun’s influence on you is negligible. b. the air in the room is also moving. c. both you and the wall are moving at the same speed, before, during, and after your jump. d. the inertia of you and the wall is negligible compared with that of t ...
Test 4 Review Clicker Questions
Test 4 Review Clicker Questions

Redefining Gravity And Newtonian Natural Motion
Redefining Gravity And Newtonian Natural Motion

WORD - Astrophysics
WORD - Astrophysics

... A very large optical-infrared telescope will allow us to derive the important processes of galaxy formation and evolution in the full range of environments. Several complementary lines of attack are possible, directly connecting present-day Universe with the high redshift Universe, where the old sta ...
Slide 1
Slide 1

Module P2.3 Forces
Module P2.3 Forces

Chapter 4 Oscillatory Motion
Chapter 4 Oscillatory Motion

Newton`s Laws and Momentum - science
Newton`s Laws and Momentum - science

Glider and Pulley
Glider and Pulley

...  Connect the other end of the thread to the mass hanger and hold the glider at the end of the track.  Open the EasySense software package, click on Timing, then select Raw Times.  Hold the glider at the other end and add a small mass of 5 g to the mass hanger.  Once you have clicked Start, let g ...
pompton lakes high school - Pompton Lakes School District
pompton lakes high school - Pompton Lakes School District

... Students will algebraically determine force, mass and acceleration given two of the three variables. 21st century themes: Scientific investigations and technological developments on new materials are critical. Devices and processes used in various areas of society such as, consumer products, health ...
The principles of the experimental
The principles of the experimental

... Types of Errors Experimental errors can be generally classified as being of three types: personal, systematic, and random. Personal Error Personal error arises from personal bias or carelessness in reading an instrument, in recording observation, or in mathematical calculations. Examples of personal ...
4.1 Resistance in Mechanical Systems
4.1 Resistance in Mechanical Systems

CHP 15
CHP 15

... d. they only observed stars in the disk of the galaxy and not the halo. e. they did not know about interstellar dust clouds. 2. Which of the following is not a characteristic of the stars of the disk component of our galaxy? a. circular orbits. b. randomly inclined orbits. c. higher metal abundance. ...
Science-M3-Force-and..
Science-M3-Force-and..

... 1. Is the force you calculated equal to the force the woman pulled? 2. A wagon including only one child is being pulled by the same force? What happens to the acceleration? 3. An object is being pulled by 80 N net force is acceleration at 4 m/s2. How can you know the mass of the object? ...
Name:
Name:

... 18. In the movie Indiana Jones and the Raiders of the Lost Ark, a large boulder runs downhill after Dr. Jones. Let’s assume that Dr. Jones and the boulder follow the path shown below. Fill in all of the missing information for the boulder in the drawing below. You may assume there is no friction and ...
Unit 7A packet—Motion
Unit 7A packet—Motion

... friction to fluid friction. Oil, grease, and wax are examples of lubricants. Friction is not always bad. You want friction to help your tires stop sliding on a wet road. Without friction, you could not walk. Think of how you easily you would be able to walk on an ice skating rink. Imagine a sunrise. ...
sections 23-25 powerpoint
sections 23-25 powerpoint

Vectors: Motion and Forces in Two Dimensions
Vectors: Motion and Forces in Two Dimensions

Rotational Dynamics PowerPoint
Rotational Dynamics PowerPoint

Document
Document

Exploring Neutral Hydrogen and Galaxy Evolution with the SKA
Exploring Neutral Hydrogen and Galaxy Evolution with the SKA

< 1 ... 52 53 54 55 56 57 58 59 60 ... 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