Chapter 6 Study Questions Name
... 3. When a soccer ball is kicked, the action and reaction forces do NOT cancel each other out because a. the force of the foot on the ball is bigger than the force of the ball on the foot. b. the forces act on two different objects. c. the forces act at different times. d. All of the above 4. Newton’ ...
... 3. When a soccer ball is kicked, the action and reaction forces do NOT cancel each other out because a. the force of the foot on the ball is bigger than the force of the ball on the foot. b. the forces act on two different objects. c. the forces act at different times. d. All of the above 4. Newton’ ...
The Hubble Space Telescope - the first 10 years
... • Thanks to the Hubble Space Telescope we have a picture in which our universe formed 10 billion years ago and 2 billion years into this the galaxies formed through mergers of smaller building blocks into the large and well ordered galaxies we see around us today - this new perspective into our Univ ...
... • Thanks to the Hubble Space Telescope we have a picture in which our universe formed 10 billion years ago and 2 billion years into this the galaxies formed through mergers of smaller building blocks into the large and well ordered galaxies we see around us today - this new perspective into our Univ ...
Chapter 5 Notes (PowerPoint)
... any net external force, an object will keep moving at a constant speed in a straight line, or remain at rest. • This is also known as the law of inertia. ...
... any net external force, an object will keep moving at a constant speed in a straight line, or remain at rest. • This is also known as the law of inertia. ...
Gravity and Motion
... An object is in free fall only if gravity is pulling it down and no other forces are acting on it. Because air resistance is a force, free fall can occur only where there is no air… either space or in a vacuum. Free Fall: The motion of a body when only the force of gravity is acting on the bod ...
... An object is in free fall only if gravity is pulling it down and no other forces are acting on it. Because air resistance is a force, free fall can occur only where there is no air… either space or in a vacuum. Free Fall: The motion of a body when only the force of gravity is acting on the bod ...
Answers for chapters5,6 and 7
... these forces. In each case the tension force of the cord attached to the salami must be the same in magnitude as the weight of the salami because the salami is not accelerating. Thus the scale reading is mg, where m is the mass of the salami. Its value is (11.0 kg) (9.8 m/s2) = 108 N. 19. (a) Since ...
... these forces. In each case the tension force of the cord attached to the salami must be the same in magnitude as the weight of the salami because the salami is not accelerating. Thus the scale reading is mg, where m is the mass of the salami. Its value is (11.0 kg) (9.8 m/s2) = 108 N. 19. (a) Since ...
How do the most massive galaxies constrain theories of
... visible for ~250 Myr every luminous E has had ~0.5-1 dry merger since z~1 in good agreement with expectations from hierarchical models ...
... visible for ~250 Myr every luminous E has had ~0.5-1 dry merger since z~1 in good agreement with expectations from hierarchical models ...
Item #
... the truck when they collide. Then by using Newton's law "Objects in motion tend to stay in motion", the truck with the larger mass will want to stay in motion more than the car, so the truck will push the car backwards.” “I agree with the student’s reasoning based on Newton’s second law. The truck’s ...
... the truck when they collide. Then by using Newton's law "Objects in motion tend to stay in motion", the truck with the larger mass will want to stay in motion more than the car, so the truck will push the car backwards.” “I agree with the student’s reasoning based on Newton’s second law. The truck’s ...
Tuesday, June 3, 2008
... once imparted to a moving body will be rigidly maintained as long as the external causes of retardation are removed!! Galileo’s statement is formulated by Newton into the 1st law of motion (Law of Inertia): In the absence of net external force, an object at rest remains at rest and an object in moti ...
... once imparted to a moving body will be rigidly maintained as long as the external causes of retardation are removed!! Galileo’s statement is formulated by Newton into the 1st law of motion (Law of Inertia): In the absence of net external force, an object at rest remains at rest and an object in moti ...
Slide 1 - Images
... you pick it up. If you hold your book above the ground, then let go, gravity pulls it to the floor. • An object will speed up, slow down, or turn only if something is pushing or pulling on it. ...
... you pick it up. If you hold your book above the ground, then let go, gravity pulls it to the floor. • An object will speed up, slow down, or turn only if something is pushing or pulling on it. ...
Forces
... • The direction of the net force, ΣF, always indicates the direction of the acceleration, but not necessarily the direction of motion. • A force that acts in two dimensions is typically separated into it’s ...
... • The direction of the net force, ΣF, always indicates the direction of the acceleration, but not necessarily the direction of motion. • A force that acts in two dimensions is typically separated into it’s ...
Mass Spectrometer
... “gun”. •These high energy electrons knock an e- from a sample atom. Producing a positive ion. •X(g) X+(g) + e- ...
... “gun”. •These high energy electrons knock an e- from a sample atom. Producing a positive ion. •X(g) X+(g) + e- ...
Forces and Motion
... reference point. Identify the two factors that speed depends on. Determine the difference between speed and velocity Analyze the relationship of velocity to acceleration Interpret a graph showing acceleration Determine the net force on an object Compare balanced and unbalanced forces Explain why fri ...
... reference point. Identify the two factors that speed depends on. Determine the difference between speed and velocity Analyze the relationship of velocity to acceleration Interpret a graph showing acceleration Determine the net force on an object Compare balanced and unbalanced forces Explain why fri ...
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.