• 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
physics140-f07-lecture5 - Open.Michigan
physics140-f07-lecture5 - Open.Michigan

... • dynamics: force and acceleration ...
Wednesday - Syracuse University
Wednesday - Syracuse University

... sun in meters and how many seconds does its light take to get to us? ...
dm curvas de rotacion
dm curvas de rotacion

... The orbital velocity of stars can be measured using the Doppler shift. ...
Acceleration is equal to Δv/Δt. Velocity is a vector and there are two
Acceleration is equal to Δv/Δt. Velocity is a vector and there are two

... SO, ...
FORCE and NEWTON`S LAWS of MOTION
FORCE and NEWTON`S LAWS of MOTION

... 13. A dog on Earth weighs 136 N. The same dog weighs 154 N on Neptune. What is the acceleration due to gravity on Neptune? ...
GravMath
GravMath

jeopardy-force-and
jeopardy-force-and

... Isaac Newton was a brilliant ______________ and _________________. ...
A vector is a quantity that has A. magnitude, only B. direction, only C
A vector is a quantity that has A. magnitude, only B. direction, only C

Laws of Motion Test Name
Laws of Motion Test Name

... a. The rocket’s acceleration is positive, while the gasses acceleration is negative but the direction is the same. The motion is therefore both “equal and opposite” b. The rocket is at rest until ignition. c. The hot gasses move in one direction, while the rocket moves in the opposite direction but ...
Newton`s Laws - HRSBSTAFF Home Page
Newton`s Laws - HRSBSTAFF Home Page

... We can either use dynamics information to then apply to a kinematic situation or vice versa ...
Forces Power Point
Forces Power Point

... resist change in its motion. ...
Slide 1
Slide 1

GRAVITY - Wilson Middle School
GRAVITY - Wilson Middle School

Ch 9 Review
Ch 9 Review

Slide 1
Slide 1

... acting on it. ...
Ch4 Gravit Force
Ch4 Gravit Force

... The proportionality constant, G is called the universal gravitational constant. Its value in the SI system of units is, G = 6.67  10-11N.m2/Kg2. The law of gravitation is universal and very fundamental. It can be used to understand the motions of planets and moons, determine the surface gravity of ...
Newton`s 3rd Law and Law of Gravitation
Newton`s 3rd Law and Law of Gravitation

Copy of Motion Notes
Copy of Motion Notes

File
File

... (~11.2 km/s, or 25,000 mph) D. Microgravity: Weightlessness due to “______ ______” Ex/ EXAMPLE PROBLEMS 1. An Earth-sized planet is 30 AUs from its star. How would the pull of its star’s gravity on it compare to the pull of the Sun’s gravity on the Earth? 2. If the radius of the Earth were tripled ( ...
1 Why study Classical Mechanics?
1 Why study Classical Mechanics?

... only 0.000234c, with c the speed of light, so the relativistic corrections ∼ vc2 are only a few parts in 108 . Interestingly, second place appears to be held by a nuclear powered manhole cover (nuclear testing, Pascal B, gone wrong) (see http://savvyparanoia.com/the-fastest-man-made-object-ever-a-nu ...
Speed up Slow down Change direction 2 m/s 2 Ball rolling down a
Speed up Slow down Change direction 2 m/s 2 Ball rolling down a

... •Obj. may or may not move •Affects acceleration •More mass need more force ...
Gravitation and Rotational Motion
Gravitation and Rotational Motion

... p.s. (multiply by sin theta if used at an angle) Newton’s Second Law for Rotational Motion: states that angular acceleration is directly proportional to the net torque and inversely proportional to the moment of inertia. Center of Mass- this is the point on an object that moves in the same way that ...
Rotational Motion - Physics & Astronomy | SFASU
Rotational Motion - Physics & Astronomy | SFASU

Rocketz!!!
Rocketz!!!

... •  must take your “pushing stuff” with you – very $$ ...
Exam: Force and Motion 2011-2012 Standards Tested: 7 PSP 1
Exam: Force and Motion 2011-2012 Standards Tested: 7 PSP 1

< 1 ... 412 413 414 415 416 417 418 419 420 ... 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