ppt document - FacStaff Home Page for CBU
... Do galaxies cluster together like stars do? When we look around, we do indeed see that galaxies appear in clusters, and appear to orbit one another by their mutual gravity. The Milky Way is one of about 40 or so galaxies that form the Local Group. Andromeda (another spiralB galaxy about 2 million li ...
... Do galaxies cluster together like stars do? When we look around, we do indeed see that galaxies appear in clusters, and appear to orbit one another by their mutual gravity. The Milky Way is one of about 40 or so galaxies that form the Local Group. Andromeda (another spiralB galaxy about 2 million li ...
Newton`s Laws II - Rutgers Physics
... A) Measure acceleration and tension simultaneously using a force and a motion sensor. 0. First, test the four wheels on the Pasco cart by spinning each one by hand to see if it spins for at least 3 seconds before stopping. If it stops quickly, try pushing the wheels (along their axes) away from the ...
... A) Measure acceleration and tension simultaneously using a force and a motion sensor. 0. First, test the four wheels on the Pasco cart by spinning each one by hand to see if it spins for at least 3 seconds before stopping. If it stops quickly, try pushing the wheels (along their axes) away from the ...
Solution
... 47) A metal bar is hanging from a hook in the ceiling when a ball that is moving horizontally suddenly strikes it. The ball is covered with glue, so it sticks to the bar. During this collision A) … the angular momentum of the system (ball and bar) is conserved about the hook because neither the hoo ...
... 47) A metal bar is hanging from a hook in the ceiling when a ball that is moving horizontally suddenly strikes it. The ball is covered with glue, so it sticks to the bar. During this collision A) … the angular momentum of the system (ball and bar) is conserved about the hook because neither the hoo ...
AP Physics C: Mechanics 2016 Free
... a constant angular speed ω . Under these conditions, the spring has stretched by an additional length d 2 , as shown in Figure 2. Answer the following questions for the platform rotating at constant angular speed ω . Express all algebraic answers in terms of m, d, ω , and physical constants, as appr ...
... a constant angular speed ω . Under these conditions, the spring has stretched by an additional length d 2 , as shown in Figure 2. Answer the following questions for the platform rotating at constant angular speed ω . Express all algebraic answers in terms of m, d, ω , and physical constants, as appr ...
Unit_2_AP_Forces_Review_Problems
... 5. Why do you have to push harder on chest of drawers to start it moving than to keep it moving once in motion? 6. Let’s say your textbooks have a total mass of 3.0 kg. What would be the mass of the books if they were taken to Jupiter where the acceleration due to gravity is 10 times that of Earth? ...
... 5. Why do you have to push harder on chest of drawers to start it moving than to keep it moving once in motion? 6. Let’s say your textbooks have a total mass of 3.0 kg. What would be the mass of the books if they were taken to Jupiter where the acceleration due to gravity is 10 times that of Earth? ...
Newton`s Second Law
... 9. Using the ruler permanently affixed to the air track, record the locations of X0 , X1 and X2 in your spreadsheet and assign a reasonable uncertainty to these positions (δX). It is very important that your glider always starts from the same location X0 and that the two photogates are not moved. If ...
... 9. Using the ruler permanently affixed to the air track, record the locations of X0 , X1 and X2 in your spreadsheet and assign a reasonable uncertainty to these positions (δX). It is very important that your glider always starts from the same location X0 and that the two photogates are not moved. If ...
Beyond Our Solar System
... – Human eyes are sensitive to only a narrow range of colors. – As you explore the universe, you will learn to use a wide range of ‘colors’—from X rays to radio waves—to reveal sights invisible to ...
... – Human eyes are sensitive to only a narrow range of colors. – As you explore the universe, you will learn to use a wide range of ‘colors’—from X rays to radio waves—to reveal sights invisible to ...
rotation ppt
... Thus, in uniform circular motion there must be a net force to produce the centripetal acceleration. The centripetal force is the name given to the net force required to keep an object moving on a circular path. The direction of the centripetal force always points toward the center of the circle and ...
... Thus, in uniform circular motion there must be a net force to produce the centripetal acceleration. The centripetal force is the name given to the net force required to keep an object moving on a circular path. The direction of the centripetal force always points toward the center of the circle and ...
Einstein`s E mc2
... mass and that is the mass which can be identified with the Newtonian mass and it does not change with the velocity. In the present article I will summarize the ideas of Okun and present my own analysis to show that why E = mc2 is inconsistent and why the concept of relativistic mass is unnecessary. ...
... mass and that is the mass which can be identified with the Newtonian mass and it does not change with the velocity. In the present article I will summarize the ideas of Okun and present my own analysis to show that why E = mc2 is inconsistent and why the concept of relativistic mass is unnecessary. ...
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.