PHYS 101L. QUESTIONS AND ANSWERS 2023/2025
,How does amplitude affect the speed of the waves on a
string?
The amplitude of a wave does not affect its speed. The speed of a
wave is determined by properties such as tension.
How does amplitude affect the wavelength of the waves?
When amplitude is adjusted, the wavelength is not affected
because amplitude is the height of the wave. Wavelength is
related to wave speed and frequency but not to amplitude
How does the wavelength of the waves depend on the wave
frequency?
As the frequency of a wave increases, its wavelength decreases.
It was claimed in the lab writeup that wave speed equals the
frequency times the wavelength. Are your results consistent
with this?
Yes, my results support this because speed is equal to the
product of the wave's frequency
How does the string tension affect the speed of waves on a
string?
If the tension decreases, the wave speed decreases because a
higher tension makes the string more rigid, allowing the wave to
travel faster.
Mechanical waves travel by interacting with particles within
the medium.
true
Longitudinal waves propagate (generate) in
air, liquids, and solid media
Longitudinal waves are characterized by regions of
compression and rarefaction.
true
The _____ of a longitudinal wave is equal to the distance
from one compression to the next compression.
wavelength
_____ waves are produced when waves of identical
frequencies traveling in opposite directions meet.
standing
, A resonance tube is used to measure resonant frequencies
occurring in _____.
air
A resonance tube emits a tone when the _____ of a standing
wave occurs at the opening of the tube.
antinode
The _____ should be measured when using a resonance
tube.
ambient temperature, inside diameter of the tube, and length of
the resonating air column
Observations of the tapes/charges?
Like charges appear to repel each other and unlike charges
appear to attract each other
Observations of distance between the charges?
Distance matters
Can you conclude which force occurs between objects
charged by contact?
When objects are charged by contact, one gets a positive charge
and the other gets a negative charge, so electrostatic force occurs
between them
Can you conclude which force occurs between the object
charged by induction and the object that induces?
It is an electrostatic force of attraction caused by attraction
between the positive and negative charges on the two objects
An electrical circuit is a closed loop containing a(n) _____.
conducting material, energy supply, and load
The measurement of current in a circuit is expressed in
_____.
amperes
Ohm's law states that current and potential difference are
directly proportional in a circuit.
true
Ohm's law can calculate the _____ of a circuit.
current, potential difference, resistance
Ohm's law can be demonstrated by _____ of a simple circuit.
,How does amplitude affect the speed of the waves on a
string?
The amplitude of a wave does not affect its speed. The speed of a
wave is determined by properties such as tension.
How does amplitude affect the wavelength of the waves?
When amplitude is adjusted, the wavelength is not affected
because amplitude is the height of the wave. Wavelength is
related to wave speed and frequency but not to amplitude
How does the wavelength of the waves depend on the wave
frequency?
As the frequency of a wave increases, its wavelength decreases.
It was claimed in the lab writeup that wave speed equals the
frequency times the wavelength. Are your results consistent
with this?
Yes, my results support this because speed is equal to the
product of the wave's frequency
How does the string tension affect the speed of waves on a
string?
If the tension decreases, the wave speed decreases because a
higher tension makes the string more rigid, allowing the wave to
travel faster.
Mechanical waves travel by interacting with particles within
the medium.
true
Longitudinal waves propagate (generate) in
air, liquids, and solid media
Longitudinal waves are characterized by regions of
compression and rarefaction.
true
The _____ of a longitudinal wave is equal to the distance
from one compression to the next compression.
wavelength
_____ waves are produced when waves of identical
frequencies traveling in opposite directions meet.
standing
, A resonance tube is used to measure resonant frequencies
occurring in _____.
air
A resonance tube emits a tone when the _____ of a standing
wave occurs at the opening of the tube.
antinode
The _____ should be measured when using a resonance
tube.
ambient temperature, inside diameter of the tube, and length of
the resonating air column
Observations of the tapes/charges?
Like charges appear to repel each other and unlike charges
appear to attract each other
Observations of distance between the charges?
Distance matters
Can you conclude which force occurs between objects
charged by contact?
When objects are charged by contact, one gets a positive charge
and the other gets a negative charge, so electrostatic force occurs
between them
Can you conclude which force occurs between the object
charged by induction and the object that induces?
It is an electrostatic force of attraction caused by attraction
between the positive and negative charges on the two objects
An electrical circuit is a closed loop containing a(n) _____.
conducting material, energy supply, and load
The measurement of current in a circuit is expressed in
_____.
amperes
Ohm's law states that current and potential difference are
directly proportional in a circuit.
true
Ohm's law can calculate the _____ of a circuit.
current, potential difference, resistance
Ohm's law can be demonstrated by _____ of a simple circuit.
