Section 1
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____________ waves require a medium, _______________ waves do not
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Last updated
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Date created
Mar 1, 2020
Cards (70)
Section 1
(50 cards)
____________ waves require a medium, _______________ waves do not
Mechanical; electromagnetic
A mass attached to a spring vibrates back and forth. At the equilibrium position, the
Velocity reaches a maximum
When a conductor is given a negative charge, the charge will move on the conductor until the repulsive forces between the free electrons are in
Equilibrium
When a charged body is brought close to an uncharged body without touching it a ________ charge may result on the uncharged body. When a charged body is brought into contact with an uncharged body and then is removed, a _______ charge may result on the uncharged body.
Induced; residual
Both insulators and conductors can be charged by
Contact
To triple the period of vibration in simple pendulum you must increase the length by a factor of
9
Best describes electrical conductors
Electrical conductors have charges that move freely
Sound travel faster through
Solids than gases
Electric field strength depends on
Charge and distance
Frequency and period are
Inversely related
When an object loses electrons it acquires a
Positive electric charge
Rarefaction corresponds to
Trough
The space around a charged object contains an electric
Field
Two waves. Same medium. Different wavelengths. Why?
Difference in frequency
After waves meet and coincide
The waves continue unchanged
The relative distribution of charge density on the surface of a conducting solid depends upon the
Shape of the conductor
At max displacement, spring force and
Acceleration is at maximum
If a positively charged glass rod is used to charge a metal bar by induction, the charge on the metal bar must be
Negative
What happens when a rubber rod is rubbed with a piece of fur, giving it a negative charge?
Electrons are added to the rod
Compression corresponds to
Crest
Most correct statement about insulators
Charges within electric insulators do not readily move
Attracting forces
Unlike charges
Repelling force occurs when the objects are of
Like charges
Waves arrived at fixed boundary
Reflected and inverted
Conductor in electrostatic equilibrium has an electric field inside conductor that is
Zero
Nonperiodic disturbance
Pulse wave
Doppler effect occurs with
All waves
Electric field lines
Never cross each other
Resultant force on a charge is the ______ sum of the individual forces on that charge.
Vector
Pendulum swings in SHM. At max displacement
Acceleration is at maximum
Materials such as glass in which electric charges do not move freely
Insulators
Vibration of an object about an equilibrium point is called simple harmonic motion when the restoring force is proportional to the
Displacement
When a mechanical waves amplitude is tripled, the energy the wave carries in a given time interval is increased by a factor of
9
What occurs when two charges are moved closer together?
Force between the charges increases
Standing waves produced by periodic waves of same
Frequency, amplitude, wavelength traveling in opposite directions.
Charge is most easily transferred in
Conductors
Wave passes through a medium, as the wave passes the particles of the medium vibrate perpendicular to the direction of the waves motion. The wave is
Transverse
Did I start making this quizlet at 12:40 the night before the test?
Yes and my eyes are burning, send help
Sound waves
Longitudinal
A surface charge can be produced on insulators by
Polarization
Field line go out of ________ charges and into __________ charges
Positive ; negative
If distance between two charged objects is doubled, the force between them is multiplied by
1/4
If the charge is tripled for two identical charges maintained at a constant separation, the electric force between them will be changed by a factor of
9
Time required to complete a cycle of motion in SHM
Period
Free boundary?
Reflected but not inverted
Distance between wave fronts
Wavelength
Two point charges initially 1cm apart are moved to 3cm apart. By what factor do the resulting electric and gravitational forces between them change?
1/9
An object that has a negative electric charge has an abundance of atomic particles called
Electrons
The angle between the string of a pendulum at its equilibrium position and at its max displacement is the pendulums
Amplitude
The electric field of an isolated, uniformly charged, hollow metallic sphere is greatest
At the spheres outer surface
Section 2
(20 cards)