Neistein_dekel60
... • How each process affects the galaxy mass? (feedback, SF, Cooling) • Why changing the parameters of a given process (e.g. SF) do not affect the galaxies? What is `self-regulation’? • What is the physics missing in order to reproduce the observational results (e.g. the LF)? • Can we extrapolate the ...
... • How each process affects the galaxy mass? (feedback, SF, Cooling) • Why changing the parameters of a given process (e.g. SF) do not affect the galaxies? What is `self-regulation’? • What is the physics missing in order to reproduce the observational results (e.g. the LF)? • Can we extrapolate the ...
Chapter 2
... We can sense acceleration by comparing observations from a constant velocity frame of reference to observations from an accelerating frame of reference. ...
... We can sense acceleration by comparing observations from a constant velocity frame of reference to observations from an accelerating frame of reference. ...
9-1 Simple Rotations of a Rigid Body
... will destroy the integrity of the work and is not permitted. The work and materials from it should never be made available to students except by instructors using the accompanying text in their classes. All recipients of this work are expected to abide by these restrictions and to honor the intended ...
... will destroy the integrity of the work and is not permitted. The work and materials from it should never be made available to students except by instructors using the accompanying text in their classes. All recipients of this work are expected to abide by these restrictions and to honor the intended ...
Document
... axis passes through the centerbof the molecule, perpendicular to its length. The mass of each oxygen atom is 2.66 x 10-26 kg, and at room temperature the average separation between the two atoms id d=1.21 x 10-10m. (The atoms are modeled as particles). (a) Calculate the moment of inertia of the mole ...
... axis passes through the centerbof the molecule, perpendicular to its length. The mass of each oxygen atom is 2.66 x 10-26 kg, and at room temperature the average separation between the two atoms id d=1.21 x 10-10m. (The atoms are modeled as particles). (a) Calculate the moment of inertia of the mole ...
teacher background information force
... gravitational force between them. For a spacecraft traveling toward Mars, Earth’s gravitational pull decreases as the spacecraft’s distance from Earth increases. Eventually, the gravitational pull of Mars becomes greater than Earth’s, and the spacecraft is more attracted toward Mars. The concept of ...
... gravitational force between them. For a spacecraft traveling toward Mars, Earth’s gravitational pull decreases as the spacecraft’s distance from Earth increases. Eventually, the gravitational pull of Mars becomes greater than Earth’s, and the spacecraft is more attracted toward Mars. The concept of ...
Centripetal force
... • A motorcycle drives around a bend with a 50-meter radius at 10 m/sec. • Find the motor cycle’s centripetal acceleration and compare it with g, the acceleration of gravity. ...
... • A motorcycle drives around a bend with a 50-meter radius at 10 m/sec. • Find the motor cycle’s centripetal acceleration and compare it with g, the acceleration of gravity. ...
APRotMotionHW2010.29.. - Jaclyn Kuspiel Murray
... A "swing" ride at a carnival consists of chairs that are swung in a circle by 12.0-m cables attached to a vertical rotating pole, as the drawing shows. ( = 62.0°) Suppose the total mass of a chair and its occupant is 198 kg. ...
... A "swing" ride at a carnival consists of chairs that are swung in a circle by 12.0-m cables attached to a vertical rotating pole, as the drawing shows. ( = 62.0°) Suppose the total mass of a chair and its occupant is 198 kg. ...
Conservation of Momentum AIM To determine the momentum of a
... velocities. From this information and the measured masses of the two trolleys, find the momentum after the "explosion. Compare the sum of these values with the total initial momentum and comment on this result in terms of the law of conservation of momentum (you should state this law). 1. Using Newt ...
... velocities. From this information and the measured masses of the two trolleys, find the momentum after the "explosion. Compare the sum of these values with the total initial momentum and comment on this result in terms of the law of conservation of momentum (you should state this law). 1. Using Newt ...
Student Exam Review
... a. net force, mass b. friction, speed c. inertia, gravity d. net force, inertia 93. The mass of an object times the acceleration due to gravity results in a. force b. friction c. speed d. weight 94. The four universal forces are electromagnetic force, strong nuclear force, weak nuclear force, and a. ...
... a. net force, mass b. friction, speed c. inertia, gravity d. net force, inertia 93. The mass of an object times the acceleration due to gravity results in a. force b. friction c. speed d. weight 94. The four universal forces are electromagnetic force, strong nuclear force, weak nuclear force, and a. ...
Lecture13-10
... trajectory as if it were a single particle - with mass equal to the complex object, and experiencing a force equal to the sum of all external forces on that complex object ...
... trajectory as if it were a single particle - with mass equal to the complex object, and experiencing a force equal to the sum of all external forces on that complex object ...
Unit 1 - Teacher Notes
... Under what conditions will a satellite stay in the same position in the sky? What is the difference between centripetal force and centrifugal force? ...
... Under what conditions will a satellite stay in the same position in the sky? What is the difference between centripetal force and centrifugal force? ...
Bringing Newton`s Laws to Life
... Set up: You first would have to cut two pieces of string one will go on the top of the hanger and the other leveled up to the bottom of the hanger. You will use a flat washer that will go in the center (bottom) to even out the length between the two masses. You then set a mark on the hanger (pulling ...
... Set up: You first would have to cut two pieces of string one will go on the top of the hanger and the other leveled up to the bottom of the hanger. You will use a flat washer that will go in the center (bottom) to even out the length between the two masses. You then set a mark on the hanger (pulling ...
Chapter 3: Technical Problem
... By definition, an object that weighs one pound has a mass of one pound–mass, so m = 408 lbm We double check by using the definition in Table 3.5 slugs ⎞ ...
... By definition, an object that weighs one pound has a mass of one pound–mass, so m = 408 lbm We double check by using the definition in Table 3.5 slugs ⎞ ...
Lab7_StaticEquilibrium
... on it is zero and thus the object is not accelerating. Of course, the word static implies that the object’s velocity is zero as well. This is fine for point particles, objects that do not have size. This is the approximation that we have been making so far in class. When you remove that approximatio ...
... on it is zero and thus the object is not accelerating. Of course, the word static implies that the object’s velocity is zero as well. This is fine for point particles, objects that do not have size. This is the approximation that we have been making so far in class. When you remove that approximatio ...
Sample Problem
... The Moon revolves around the Earth every 27.3 days. The radius of the orbit is 382,000,000 m. What is the magnitude and direction of the acceleration of the Moon relative to Earth? ...
... The Moon revolves around the Earth every 27.3 days. The radius of the orbit is 382,000,000 m. What is the magnitude and direction of the acceleration of the Moon relative 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.