A type of friction that occurs when there is no relative motion between the object and the surface (no sliding).
Back
Vector
Front
A quantity that involves both magnitude and direction.
Back
Uniform Circular Motion
Front
When an objects speed around its path is constant.
Back
Torque
Front
The measure of a force's effectiveness at making an object spin or rotate.
Back
Normal Force
Front
The component of the contact force that is perpendicular to the surface. (When an object is in contact with a surface, the surface exerts a contact force on the object.)
Back
Rotational Equilibrium
Front
If the sum of the torques acting on an object is zero.
Back
Elastic Collision
Front
A type of collision in which the objects bounce perfectly off each other in opposite directions. Kinetic Energy is conserved. Momentum is conserved.
Back
Weight
Front
The gravitational force exerted on an object by the Earth (or by whatever planet it happens to be on).
Back
Simple Harmonic Motion
Front
Any vibrating system for which the restoring force is directly proportional to the negative of the displacement is said to exhibit _________________ _______________ ______________.
Back
Law of Conservation of Total Energy
Front
K(initial)+U(Initial) = K(final)+U(final)
Back
Newton's First Law
Front
An object will continue in its state of motion unless compelled to change by a force impressed upon it. Also called Law of Inertia
Back
Amplitude
Front
The maximum displacement from equilibrium.
Back
Period (T)
Front
The amount of time it takes to complete a cycle.
Back
Hooke's Law
Front
F = -kx
Back
Mechanical Wave
Front
A disturbance transmitted by a medium from one point to another, without the medium its self being transported.
Back
Inelastic Collision
Front
A type of collision in which the objects travel in the same direction after the collision. Kinetic Energy is lost. Momentum is conserved.
Back
Scalar
Front
A quantity that does not involve direction.
Back
Two-Dimensional Vectors
Front
Vectors that lie flat in a plane and can be written as the sum of a horizontal vector and a vertical vector.
Back
Kinetic Friction
Front
A type of friction that occurs when there is relative motion (when the surface is sliding).
Back
Uniform Circular Motion
Front
The objects speed around its path (constant).
Back
Unit Vectors
Front
Special vectors that have a magnitude of 1. These include horizontal basis vector, i, and vertical basis vector, j.
Back
Displacement
Front
A net distance traveled including direction; An objects change in position.
Back
Potential Energy
Front
The energy of an object or system has by virtue of its position of configuration.
Back
Newton's Law of Gravitation
Front
Any two objects in the universe that exert and attractive force on each other - called the gravitiational force - whoes strength is proportional to the product of the object's masses and
Back
Law of Conservation of Energy
Front
Energy can not just appear out of nowhere nor can it disappear in a closed system; it must always take on another form.
Back
Friction Force
Front
The component of the contact force that is parallel to the surface. (When an object is in contact with a surface, the surface exerts a contact force on the object).
Back
Power
Front
The rate at which work gets done, or energy gets transferred.
Back
Impulse
Front
The product of force and the time during which it acts.
Back
Kinematics
Front
The mathematical tools for describing motion in terms of displacement, velocity, and acceleration.
Back
Newton's Second Law
Front
Predicts what will happen when an unbalanced force does act on an object: the object's velocity will change / the object will accelerate.
Back
Momentum
Front
A vector quantity given by p = mv
Back
Static Equilibrium
Front
State of equilibrium when an object is at rest.
Back
Inertia
Front
An object's natural resistance to changes in their state of motion.
Back
Equilibrium Position
Front
When a spring is neither stretched nor compressed it is said to be in it ___________ ____________.
Back
Work
Front
The application of force over a distance and the resulting change in energy of the system that the force is acted on.
Back
Frequency
Front
The number of cycles that can be completed per unit time.
Back
Total Mechanical Energy
Front
The sum of an object's kinetic and potential energies.
Back
Law of Conservation of Momentum
Front
The momentum before equals the momentum after. total p (initial) = total p (final).
Back
Translational Equilibrium
Front
Occurs when the sum of the forces acting on an object are zero.
Back
Newton's Third Law
Front
To ever action, there is an equal but opposite reaction.
Back
Total Mechanical Energy
Front
The sum of an objects kinetic and potential energies.
Back
Impulse-Momentum Theorem
Front
Another way of writing Newton's Second Law. (Written J = change in momentum)
Back
Centripetal Acceleration
Front
When the acceleration vector points toward the center of the circle. The thing that turns the velocity vector to keep the object traveling in a circle.
Back
Perfectly Inelastic Collision
Front
The objects stick together and travel in the same direction. Greatest kinetic energy is lost. Momentum is conserved.
Back
Centripetal Force
Front
The force that produces centripetal acceleration. Pulls on object toward the center.
Back
Simple Pendulum
Front
Consists of a weight of mass attached to a string or a mass-less rod that swings, without friction, about the vertical equilibrium position.
Back
Coefficient of Friciton
Front
Represents the nature of surfaces.
Back
Universal Gravitational Constant
Front
9.81, signified by the capital letter G.
Back
Position
Front
An objects location in a certain space.
Back
Rotational Inertia
Front
The tendency of an object in motion to rotate until its acted upon by an outside force.
Back
Section 2
(31 cards)
Electric Field
Front
The presence of charge creates an ___________ ___________ in the space that surrounds it.
Back
Beat
Front
When two waves interfere constructively, producing an increase in sound level.
Back
Beat Frequency
Front
Equal to the difference between the frequencies of the two combining sounds.
Back
Kirchhoff's First Law (The Junction Rule) (The Node Rule)
Front
Says that the total current that enters a junction must equal the total current that leaves the junction.
Back
Superposition (Of Waves)
Front
When two or more waves meet, the displacement at any point of the medium is equal to the algebraic sum of the displacements due to the individual waves.
Back
Coulomb's Law
Front
Back
Insulators
Front
A material whose internal electric charges do not flow freely.
Back
Net Force
Front
The single force that could replace all the individual acting on an object and produce the same effect. Forces acting in the same direction add to together to make this.
Back
Charged
Front
Occurs when an imbalance between the numbers of protons and electrons exists.
Back
Electric Charge
Front
A quality had by protons and electrons that gives them an attractive force.
Back
Voltage
Front
The thing that creates current.
Back
Standing Wave
Front
The wave oscillates vertically and remains fixed. The crests and troughs no longer travel down the length of the string.
Back
Intensity
Front
The rate at which sound waves transmit energy, per unit area.
Back
Gravitational Field
Front
The space surrounding the Earth a permeated by a ___________ ____________ that's created by the Earth.
Back
Restoring Force
Front
Any force that always pushed an object toward an equilibrium position.
Back
Doppler Effect
Front
The shift in frequency and wavelength that occurs when the source and detector are in relative motion.
Back
Destructive Interference
Front
When two waves have opposite displacements and meet, the combined waveform will have a displacement of smaller magnitude than either individual wave.
Back
Decibels (dB)
Front
The loudness of sound.
Back
Longitudinal Wave
Front
A wave the travels and oscillates in the same direction. (i.e sound waves)
Back
Ohm's Law
Front
Back
Constructive Interference
Front
When two waves has displacements of the same sign when they overlap, the combined wave will have a displacement of greater magnitude than either individual wave.
Back
Direct Current
Front
When a current always travels in the same direction through the pathway.
Back
Out of Phase
Front
When two waves meet and the crest of one meets the trough of the other and vice versa. These waves will destructively interfere completely and the amplitude of the combined wave will be the difference between the individual amplitudes.
Back
Kirchhoff's Second Law (The Loop Rule)
Front
Says that the sum of the potential differences (positive and negative) That traverse any closed loop in a circuit must be zero.
Back
Conductors
Front
Materials that permit the flow of excess charge.
Back
Electric Dipole
Front
When two equal but opposite charges form a pair.
Back
Crests
Front
The points at which the rope has its maximum vertical displacement above the horizontal.
Back
Troughs
Front
The points at which the rope has its maximum vertical displacement below the horizontal.
Back
Superconductor
Front
A material that offers no resistance to the flow of charges.
Back
Transverse Wave
Front
A wave vibrating perpendicular to the direction in which it propagates (travels horizontally).
Back
Inphase
Front
When two waves meet and the crest meets the crest and trough meets trough perfectly. These waves constructively interfere and the amplitude of the combined wave will be the sum of the individual amplitudes.