sample106f
... For isolated systems: net = 0 L is constant L = 0 L0 = I00 = Lf = Iff Equilibrium: forces = 0 and torques = 0, If net force on a system is zero, then the net torque is the same for any chosen rotation axis. COG definition: point about which torques due to gravity alone add to zero. ...
... For isolated systems: net = 0 L is constant L = 0 L0 = I00 = Lf = Iff Equilibrium: forces = 0 and torques = 0, If net force on a system is zero, then the net torque is the same for any chosen rotation axis. COG definition: point about which torques due to gravity alone add to zero. ...
Galaxy Notes File
... From this table, you should take note of which galaxies are the most and least massive, most and least luminous, and largest and smallest in size. ...
... From this table, you should take note of which galaxies are the most and least massive, most and least luminous, and largest and smallest in size. ...
Physics 221, February 17
... Conservation of momentum For a system of objects, a component of the momentum along a chosen direction is constant, if no net outside force with a component in this chosen direction acts on the system. In collisions between isolated objects momentum is always conserved. m1v1i + m2v2i = m1v1f + m2v2 ...
... Conservation of momentum For a system of objects, a component of the momentum along a chosen direction is constant, if no net outside force with a component in this chosen direction acts on the system. In collisions between isolated objects momentum is always conserved. m1v1i + m2v2i = m1v1f + m2v2 ...
The Milky Way - TCNJ | The College of New Jersey
... • HALO Contains most globular clusters, and most Pop II stars; roughly 30 kpc (105 lt-yr) in diameter. • THICK DISK roughly 5 kpc thick, and 30 kpc in diameter; contains Pop I stars (but low density). • THIN DISK ~500 pc thick: contains MOST stars; includes spiral arms and great majority of luminosi ...
... • HALO Contains most globular clusters, and most Pop II stars; roughly 30 kpc (105 lt-yr) in diameter. • THICK DISK roughly 5 kpc thick, and 30 kpc in diameter; contains Pop I stars (but low density). • THIN DISK ~500 pc thick: contains MOST stars; includes spiral arms and great majority of luminosi ...
Torque, Atwood Machines, Angular M.
... Static Equilibrium According to Newton's first law, if an object is at rest it can be said to be in a state of static equilibrium. In other words, all of the FORCES cancel out to that the net force is equal to zero. Since torque is the angular analog to force we can say that if a system is at rest, ...
... Static Equilibrium According to Newton's first law, if an object is at rest it can be said to be in a state of static equilibrium. In other words, all of the FORCES cancel out to that the net force is equal to zero. Since torque is the angular analog to force we can say that if a system is at rest, ...
Descriptions For Posters
... Cassiopeia A is a supernova remnant at distance 11,000 light-years in our galaxy in the consellation Cassiopeia. The original star, about 15 to 20 times more massive than our sun, died in a cataclysmic "supernova" explosion relatively recently in our own Milky Way galaxy. Pandora’s Cluster The giant ...
... Cassiopeia A is a supernova remnant at distance 11,000 light-years in our galaxy in the consellation Cassiopeia. The original star, about 15 to 20 times more massive than our sun, died in a cataclysmic "supernova" explosion relatively recently in our own Milky Way galaxy. Pandora’s Cluster The giant ...
Lecture 8: Forces & The Laws of Motion
... a) greater than b) Less than c) Equal to the velocity observed by the passenger? 2) The hang-time of a basketball player who jumps a vertical distance of 2 ft is about 2/3 second. What will the hang-time be if the player reaches the same height while jumping 4 ft horizontally? a) less than 2/3 s b) ...
... a) greater than b) Less than c) Equal to the velocity observed by the passenger? 2) The hang-time of a basketball player who jumps a vertical distance of 2 ft is about 2/3 second. What will the hang-time be if the player reaches the same height while jumping 4 ft horizontally? a) less than 2/3 s b) ...
Wizard Test Maker
... 19. Which combination of fundamental unit can be used to express the weight of an object? (A) kilogram/second (C) kilogram•meter/second (B) kilogram•meter (D) kilogram•meter/second2 20. Which two quantities are measured in the same units? (A) velocity and acceleration (C) mass and weight (B) weight ...
... 19. Which combination of fundamental unit can be used to express the weight of an object? (A) kilogram/second (C) kilogram•meter/second (B) kilogram•meter (D) kilogram•meter/second2 20. Which two quantities are measured in the same units? (A) velocity and acceleration (C) mass and weight (B) weight ...
3 Newton`s First Law of Motion—Inertia
... demolishing the notion that a force is necessary to keep an object moving. Friction is the force that acts between materials that touch as they move past each other. • Friction is caused by the irregularities in the surfaces of objects that are touching. • If friction were absent, a moving object wo ...
... demolishing the notion that a force is necessary to keep an object moving. Friction is the force that acts between materials that touch as they move past each other. • Friction is caused by the irregularities in the surfaces of objects that are touching. • If friction were absent, a moving object wo ...
Exam 1 Solutions Kinematics and Newton’s laws of motion
... Compression of the banked road provides the normal force. The normal force pushes against the car to 1) support the weight and 2) provide the centripetal force to keep the car moving in a circle. ...
... Compression of the banked road provides the normal force. The normal force pushes against the car to 1) support the weight and 2) provide the centripetal force to keep the car moving in a circle. ...
Rotational Motion - University of Colorado Boulder
... some of the PE is converted into KErot and less energy is left over for KEtrans. A smaller KEtrans means slower speed (since KEtrans = (1/2) M v2 ). So rolling object goes slower than sliding object, because with rolling object some of the energy gets "tied up" in rotation, and less is available for ...
... some of the PE is converted into KErot and less energy is left over for KEtrans. A smaller KEtrans means slower speed (since KEtrans = (1/2) M v2 ). So rolling object goes slower than sliding object, because with rolling object some of the energy gets "tied up" in rotation, and less is available for ...
UNIT 7 Lab
... c. Apply Newton’s Second law to the water at the top of the circle. Which of the forces could change as the velocity changes? What is the condition for the water to fall out of the bucket? Explain. d. At what speed would the water fall out of the bucket? Show your work. SUMMARY You should understand ...
... c. Apply Newton’s Second law to the water at the top of the circle. Which of the forces could change as the velocity changes? What is the condition for the water to fall out of the bucket? Explain. d. At what speed would the water fall out of the bucket? Show your work. SUMMARY You should understand ...
Classical Dynamics for a System of Particles (Chapter 9)
... The x component is constant, px = m v0 cos θ ; the y component decreases at the rate − mg, py = m v0 sin θ − m g t . The momentum vector is p(t) = p0x i + ( p0y − m g t ) j ; ...
... The x component is constant, px = m v0 cos θ ; the y component decreases at the rate − mg, py = m v0 sin θ − m g t . The momentum vector is p(t) = p0x i + ( p0y − m g t ) j ; ...
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.