Bozeman Science
Systems and Objects
In this video Paul Andersen explains the differences between a system and an object. Depending on the scale it often times easies to view a system as an object if the constituent parts aren't relevant to the question being asked. He also...
Bozeman Science
Wave Amplitude
In this video Paul Andersen explains how the amplitude of a wave is a measure of the energy of the wave. He gives several examples of wave amplitude and shows you how to calculate the wave of a transverse and longitudinal wave.
Bozeman Science
Force-Time Graph
In this video Paul Andersen explains hot the force-time graph can be used to determine the impulse of an object. Since the impulse and the change in momentum are equivalent the graph can also be used to determine the change in momentum...
Bozeman Science
Mass and Energy
In this video Paul Andersen explains how mass can be converted to energy and energy can be converted to mass. The equation E=mc2 can be used to determine the amount of energy released from nuclear processes.
Bozeman Science
Scalar Field
In this video Paul Andersen explains how scalar fields can be used to show the distribution of scalar quantities. The most important scalar fields in AP Physics 2 deal with electric potential. Scalar addition can be used to combine...
Bozeman Science
Objects
In this video Paul Andersen explains how a system can be viewed as an object and an object can be viewed as a system.
Bozeman Science
Inertial Mass
In this video Paul Andersen explains how inertial mass is defined and measured. When a force is applied to an object or a system it will accelerate. Using Newton's Second Law of Motion (F=ma) you can calculate the inertial mass.
Bozeman Science
Contour Lines
In this video Paul Andersen explains how contour lines show areas of equal elevation or equal gravitational potential. Contour lines are used as an analogy for lines of equipotential in electric fields.
Bozeman Science
Object Interactions
In this video Paul Andersen explains how object interactions can add or remove mass or energy from a system.
Bozeman Science
Calculating the Gravitational Force
In this video Paul Andersen explains why astronauts are weightless. He also explains how Newton's Universal Law of Gravitation can be used to calculate the gravitational force between objects.
Bozeman Science
Internal Energy
In this video Paul Andersen explains how the internal energy of a system can change as the internal structure of the system changes. An object model will not be able to account for the restoring forces and so a system model must be used....
Bozeman Science
Systems
In this video Paul Andersen explains how systems are two or more objects that interact with one another. If a system has no relevant internal structure it can be treated as an object. The conservation laws apply to energy, charge and...
Bozeman Science
Electric Force
In this video Paul Andersen explains how electric force on an object inside a field can be calculated by multiplying the charge of the object (in C) times the electric field strength (in N/C).
Bozeman Science
Electromagnetic Forces
In this video Paul Andersen explains how electromagnetic forces are exerted over all scales and dominate at the human scale. The magnitude of electromagnetic forces vary with the magnitude and motion of the electric charges involved.
Bozeman Science
Wave Function
In this video Paul Andersen explains how the location of matter can be determined at the nanoscale using the wave function. The absolute value of the wave function can be used to determine the probability of finding matter in a location....
Bozeman Science
Work Energy Principle
In this video Paul Andersen explains how the kinetic energy gained by an object is equivalent to the work done on the object. The force on the object must act parallel or antiparallel to the motion of the object to do work. Several...
Bozeman Science
Calculating the Electric Force
In this video Paul Andersen explains how you can use Coulomb's Law to determine the electric force between two charges. In Physics 1 students should be able to calculate the force between two charges and in Physics 2 students should be...
Bozeman Science
Conservation of Linear Momentum
In this video Paul Andersen explains how linear momentum is conserved in all collisions. In completely elastic collisions the kinetic energy of the objects is also maintained. Several examples and demonstrations are included.
Bozeman Science
Motion of the Center of Mass
In this video Paul Andersen explains how linear motion of an object can be measured using the center of mass. Internal forces within the object can be ignored since they exist in action reaction pairs. A simple way to determine the...
Bozeman Science
Kinetic Energy
In this video Paul Andersen explains how the kinetic energy of an object if due to the motion of an object. Objects can have kinetic energy but they cannot have potential energy unless they are part of a system. He then explains how to...
Bozeman Science
Wave-Particle Duality - Part 1
In this video Paul Andersen explains the wave-particle duality discovered by scientists. In certain situations particles (like electrons and photons) display wave like properties. This phenomenon can best be explored using the double...
Bozeman Science
Wavelength
In this video Paul Andersen explains how the wavelength is the distance between oscillations in a wave. In a longitudinal wave this might be the distance between areas of compression. In a transverse wave it might be the distance between...
Bozeman Science
Rotational Inertia
In this video Paul Andersen explains how the angular momentum of an object if a product of the rotational inertia and the angular velocity. The rotational inertia depends on the mass, radius and shape of the rotating objects. A sample...
Bozeman Science
Electric Field of Parallel Plates
In this video Paul Andersen explains how the electric field between oppositely and equally charged plates is uniform as long as you are far from the edge. The strength of the electric field can be determined by either the charge of the...