Powerpoint for today
... Come up with a theory that explains the observations Use the theory to predict future behavior Make further observations to test the theory Refine the theory, or if it no longer works, make a new one ...
... Come up with a theory that explains the observations Use the theory to predict future behavior Make further observations to test the theory Refine the theory, or if it no longer works, make a new one ...
Class 28 (Jun 2) - Physics at Oregon State University
... • Rotation curve for galaxy is not the same as for a solar system. • It’s flat. But it shouldn’t be. • The outer stars are rotating too rapidly based on visible matter within their orbits. ...
... • Rotation curve for galaxy is not the same as for a solar system. • It’s flat. But it shouldn’t be. • The outer stars are rotating too rapidly based on visible matter within their orbits. ...
Newton`s Second Law
... increases, the acceleration increases. If the force decreases, the acceleration decreases. Acceleration is inversely proportional to the mass. INVERSELY = They do the opposite. If the mass decreases, the acceleration will increase. If the mass increases, the acceleration will decrease. ...
... increases, the acceleration increases. If the force decreases, the acceleration decreases. Acceleration is inversely proportional to the mass. INVERSELY = They do the opposite. If the mass decreases, the acceleration will increase. If the mass increases, the acceleration will decrease. ...
Question A particle is projected vertically upward in a constant
... Question A particle is projected vertically upward in a constant gravitational field with an initial speed of v0 . Show that if there is a retarding force proportional to the square of the speed, the speed of the particle when it returns to its initial position is v0 vT q ...
... Question A particle is projected vertically upward in a constant gravitational field with an initial speed of v0 . Show that if there is a retarding force proportional to the square of the speed, the speed of the particle when it returns to its initial position is v0 vT q ...
Black Hole
... Black Hole Mass • Black holes can keep accumulating mass. – Stars orbit around according to Kepler’s laws ...
... Black Hole Mass • Black holes can keep accumulating mass. – Stars orbit around according to Kepler’s laws ...
Chapter 7 Rotational Motion and the Law of Gravity
... object, it has a value of 9.81 N/m (on Earth). ◦ The same value as ag (9.81 m/s2) ...
... object, it has a value of 9.81 N/m (on Earth). ◦ The same value as ag (9.81 m/s2) ...
Section 1 Newton`s Second Law
... A. Law of gravitation—any two masses exert an attractive force on each other 1. Gravity is one of the four basic forces that also include the electromagnetic force, the strong nuclear force, and the weak nuclear force. 2. Gravity is a long-range force that gives the universe its structure. B. Due to ...
... A. Law of gravitation—any two masses exert an attractive force on each other 1. Gravity is one of the four basic forces that also include the electromagnetic force, the strong nuclear force, and the weak nuclear force. 2. Gravity is a long-range force that gives the universe its structure. B. Due to ...
A body acted on by no net force moves with constant velocity
... 3. A quarter dropped in a coffee filter will land faster than a penny in a coffee filter (the terminal velocity is larger for larger mass) 4. Two identical coins dropped in coffee filters of different diameters land at different times (the terminal velocity is ...
... 3. A quarter dropped in a coffee filter will land faster than a penny in a coffee filter (the terminal velocity is larger for larger mass) 4. Two identical coins dropped in coffee filters of different diameters land at different times (the terminal velocity is ...
Slajd 1 - pravos.hr
... I. Every object in a state of uniform motion tends to remain in that state of motion unless an external force is applied to it. ...
... I. Every object in a state of uniform motion tends to remain in that state of motion unless an external force is applied to it. ...
Newton`s Laws - Uplands blogs
... car going 80 km/h is stopped by the brick wall, your body keeps moving at 80 km/h. ...
... car going 80 km/h is stopped by the brick wall, your body keeps moving at 80 km/h. ...
The Size and Structure of the Milky Way Galaxy
... Dark Matter: A Major Problem for Contemporary Physics and Astronomy • Stars are a small fraction of the mass of major galaxies • The dark matter problem becomes more pronounced as you go out in the universe • The form of the dark matter is unknown; probably not what you studied in chemistry • Possi ...
... Dark Matter: A Major Problem for Contemporary Physics and Astronomy • Stars are a small fraction of the mass of major galaxies • The dark matter problem becomes more pronounced as you go out in the universe • The form of the dark matter is unknown; probably not what you studied in chemistry • Possi ...
Downlaod File
... For cart mass ma on horizontal track with a cord attached over a pulley to hanging mass m2 ,the force Fnet on the entire system (cart and hanging mass) is the weight of the hanging mass, Fnet= m2g According to Newton's 2nd law ,this net force should be equal to ma, where m is the total mass that bei ...
... For cart mass ma on horizontal track with a cord attached over a pulley to hanging mass m2 ,the force Fnet on the entire system (cart and hanging mass) is the weight of the hanging mass, Fnet= m2g According to Newton's 2nd law ,this net force should be equal to ma, where m is the total mass that bei ...
Universal Law of Gravitation
... Note: m= mass of the object that is being attracted or accelerated (mass that is orbiting about another object) M = mass of the object that is attracting or accelerating ‘m’ (mass that is being orbited about) ...
... Note: m= mass of the object that is being attracted or accelerated (mass that is orbiting about another object) M = mass of the object that is attracting or accelerating ‘m’ (mass that is being orbited about) ...
03
... energy < E >nT over a cycle nT ≤ t ≤ (n + 1)T , after n cycles.( You can leave the answer in terms of an integral over time) T is the time period. Use the result to show m ...
... energy < E >nT over a cycle nT ≤ t ≤ (n + 1)T , after n cycles.( You can leave the answer in terms of an integral over time) T is the time period. Use the result to show m ...
News Analysis - Learning Space
... WHAT ARE GRAVITATIONAL WAVES ? “These are ripples in the fabric of space-time that are produced, when black holes collide and stars explode” You can say, gravitational waves are produced when objects accelerate. Gravitational waves were first proposed, 100 years ago by Albert Einstein, as part of th ...
... WHAT ARE GRAVITATIONAL WAVES ? “These are ripples in the fabric of space-time that are produced, when black holes collide and stars explode” You can say, gravitational waves are produced when objects accelerate. Gravitational waves were first proposed, 100 years ago by Albert Einstein, as part of th ...
SCRIBBLE PAD
... • More momentum ~ harder it is to stop or change its direction • Momentum is Conserved – Any time 2 or more objects interact, they may exchange momentum, but the total amount of momentum stays the same – Momentum before collision = momentum ...
... • More momentum ~ harder it is to stop or change its direction • Momentum is Conserved – Any time 2 or more objects interact, they may exchange momentum, but the total amount of momentum stays the same – Momentum before collision = momentum ...
Physical Science
... 16. Explain how terminal velocity affects an object falling to Earth. ____________________________________________________________________________________________________________ ____________________________________________________________________________________________________________ ____________ ...
... 16. Explain how terminal velocity affects an object falling to Earth. ____________________________________________________________________________________________________________ ____________________________________________________________________________________________________________ ____________ ...
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.