powerpoint - Physics @ IUPUI
... • The only real difference is the distribution of galaxy types. ...
... • The only real difference is the distribution of galaxy types. ...
Power-point slides for Lecture 2
... does greatly affect everything – the explosion, light curve, nucleosynthesis and remnant properties. A massive hydrogen envelope may also make the star more difficult to explode. 3) Mass loss sets an upper bound to the luminosity of red supergiants. This limit is metallicity dependent. For solar met ...
... does greatly affect everything – the explosion, light curve, nucleosynthesis and remnant properties. A massive hydrogen envelope may also make the star more difficult to explode. 3) Mass loss sets an upper bound to the luminosity of red supergiants. This limit is metallicity dependent. For solar met ...
Systems of Particles
... Example of elastic collision A small ball of mass m is aligned above a larger ball of mass M=0.63 kg (with a slight separation, as with the baseball and basketball of Fig. 9-70a), and the two are dropped simultaneously from a height of h=1.8m. (Assume the radius of each ball is negligible relative ...
... Example of elastic collision A small ball of mass m is aligned above a larger ball of mass M=0.63 kg (with a slight separation, as with the baseball and basketball of Fig. 9-70a), and the two are dropped simultaneously from a height of h=1.8m. (Assume the radius of each ball is negligible relative ...
Galaxies
... • Astronomers now have decided that the morphology classification should consist of only two types of galaxies: the spiral and the elliptical. • Barred spirals are a subclass of spirals. Irregulars may be either spiral or barred spiral. ...
... • Astronomers now have decided that the morphology classification should consist of only two types of galaxies: the spiral and the elliptical. • Barred spirals are a subclass of spirals. Irregulars may be either spiral or barred spiral. ...
AP Physics Daily Problem #30
... Determine the amount of time required for the vehicle to slip back to the bottom of the hill, measured from the time the vehicle started up the hill. (hint: Unlike most problems of this type, the direction of the friction force doesn’t change when the vehicle changes direction! The tires are still s ...
... Determine the amount of time required for the vehicle to slip back to the bottom of the hill, measured from the time the vehicle started up the hill. (hint: Unlike most problems of this type, the direction of the friction force doesn’t change when the vehicle changes direction! The tires are still s ...
Chapter 16 - Astronomy
... the Galaxy inside the Sun’s orbit. 2. The mass of the inner Galaxy is estimated at 100 billion solar masses. Recent analysis of the rotation patterns in the outer parts of the Galaxy indicates that the total mass of the Galaxy is about 1012 solar masses (10 times more mass than calculated for the in ...
... the Galaxy inside the Sun’s orbit. 2. The mass of the inner Galaxy is estimated at 100 billion solar masses. Recent analysis of the rotation patterns in the outer parts of the Galaxy indicates that the total mass of the Galaxy is about 1012 solar masses (10 times more mass than calculated for the in ...
mass and weight - Project PHYSNET
... mass of the unknown can be found by summing the known masses. This device actually compares the gravitational masses of the objects, not their inertial masses. However, it has been found that gravitational mass and inertial mass are the same.3 3 See “Relativistic Gravitation: The Equivalence Princip ...
... mass of the unknown can be found by summing the known masses. This device actually compares the gravitational masses of the objects, not their inertial masses. However, it has been found that gravitational mass and inertial mass are the same.3 3 See “Relativistic Gravitation: The Equivalence Princip ...
Chapter 6 - TeacherWeb
... Terminal Velocity: Because the air resistance _______________ as an object’s speed _________________, eventually the _______________ force of air resistance will equal the __________________ force of gravity and the acceleration will be ___________. The object will then fall at _______________ velo ...
... Terminal Velocity: Because the air resistance _______________ as an object’s speed _________________, eventually the _______________ force of air resistance will equal the __________________ force of gravity and the acceleration will be ___________. The object will then fall at _______________ velo ...
force - Reilly Physics
... causing them to slow down and stop with the car - otherwise they would keep going at constant speed into the windscreen. ...
... causing them to slow down and stop with the car - otherwise they would keep going at constant speed into the windscreen. ...
Supplementary Fields Notes
... Some fields are used to explain “Action at a Distance” • Place a test mass, test charge, or test current at some test point in a field • It feels a force due to the presence of remote sources of the field. • The sources “alter space” at every possible test point. • The forces (vectors) at a test po ...
... Some fields are used to explain “Action at a Distance” • Place a test mass, test charge, or test current at some test point in a field • It feels a force due to the presence of remote sources of the field. • The sources “alter space” at every possible test point. • The forces (vectors) at a test po ...
Newton`s Laws of Motion 2
... An arrow should point left. Its length should be the difference in length of the arrows shown in the question. Increase the force on the object; decrease the mass of the object. The action force is the push by my foot on the ball. The reaction force is the push by the ball on my foot. F ma, F 40 ...
... An arrow should point left. Its length should be the difference in length of the arrows shown in the question. Increase the force on the object; decrease the mass of the object. The action force is the push by my foot on the ball. The reaction force is the push by the ball on my foot. F ma, F 40 ...
Astronomy 21 – Test 2 – Answers
... 10. How would you determine the spiral structure of the Milky Way? Also – what is 21-cm emission (explain the astrophysical mechanism)? You have to look through dust so you have to use longer wavelength observations. The 21cm line is useful for that (it is radiation emitted during the spin flip of t ...
... 10. How would you determine the spiral structure of the Milky Way? Also – what is 21-cm emission (explain the astrophysical mechanism)? You have to look through dust so you have to use longer wavelength observations. The 21cm line is useful for that (it is radiation emitted during the spin flip of t ...
Project 2: Newton`s Laws
... There are three forces acting upon the system - the gravity force (the Earth pulls down on the 15.0 kg of mass), the normal force (the floor pushes up on the system to support its weight), and the applied force (the hand is pushing on the back part of the system). The force acting between the 5.0-kg ...
... There are three forces acting upon the system - the gravity force (the Earth pulls down on the 15.0 kg of mass), the normal force (the floor pushes up on the system to support its weight), and the applied force (the hand is pushing on the back part of the system). The force acting between the 5.0-kg ...
1443-501 Spring 2002 Lecture #3
... A small ball of mass 2.00g is released from rest in a large vessel filled with oil, where it experiences a resistive force proportional to its speed. The ball reaches a terminal speed of 5.00 cm/s. Determine the time constant and the time it takes the ball to reach 90% of its terminal speed. ...
... A small ball of mass 2.00g is released from rest in a large vessel filled with oil, where it experiences a resistive force proportional to its speed. The ball reaches a terminal speed of 5.00 cm/s. Determine the time constant and the time it takes the ball to reach 90% of its terminal speed. ...
What is a force? - DarringtonScience
... Free-fall only works if we ignore air resistance. Air resistance is a type of fluid friction an object experiences as it moves through the air. As an object speeds up, air resistance increases. As an object falls, it speeds up, so air resistance increases. When the force of gravity = air resistance, ...
... Free-fall only works if we ignore air resistance. Air resistance is a type of fluid friction an object experiences as it moves through the air. As an object speeds up, air resistance increases. As an object falls, it speeds up, so air resistance increases. When the force of gravity = air resistance, ...
Unbalanced Forces & Acceleration
... Unbalanced Forces and Velocity (cont.) • An unbalanced force applied to a moving object in the same direction as the motion speeds the object up. • An unbalanced force applied to a moving object in the opposite direction as the motion slows the object down. • Friction is applied in the opposite dire ...
... Unbalanced Forces and Velocity (cont.) • An unbalanced force applied to a moving object in the same direction as the motion speeds the object up. • An unbalanced force applied to a moving object in the opposite direction as the motion slows the object down. • Friction is applied in the opposite dire ...
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.