Ch. 4 Sec.8 - Ch. 5 Sec. 1 Flashcards
What is the pitch in music?
How high or low a note is
What is a vibration?
To move back and forth rapidly
What are variables?
Something that can change or vary during an investigation
What is sound?
Sound is a wave phenomenon produced by vibrating materials
What do the vibrations cause?
They cause your ears to vibrate
What does the variable length do?
Affects the pitch of the sound
What does the variable tension do?
Affect the pitch of a sound
What is f the variable for?
Frequency or pitch of the sound in cycles per second.
What does the frequency of the sound in cycles per second look like?
1/s
What does the variable T stand for?
Tension
What is tension measured in?
N
What does the variable L stand for?
Length of a string
What is the length of a string measured in?
m
What does m stand for?
Mass of the string
What is the mass measured in?
kg
What does the pitch of a sound correspond to?
The frequency of vibration of the object producing sound
What happens when the pitch is high?
The frequency is high
If you decrease the length of the vibrating spring, what happens?
It will increase its vibration frequency
What happens when you increase the tension in the string?
It will increase the frequency of vibration.
What can happen with a tensioned string?
It can produce vibrations
What happens when a string is pulled back and released?
The tension in the string accelerates the spring back towards its equilibrium
How is the speed which a wave pulse travels along a string determined?
It is determined by the tension in the string and the string’s mass per unit length.
What is the tension?
The tension is the force that the rest of the string when a part of the string is pulled to the side away from equilibrium position, the restoring force on that part is equal to the sum of the two components of the tension that are perpendicular to the undisturbed string.
What happens with the larger the tension?
The larger the restoring force
The larger the tension, the larger the restoring force, so?
The more rapidly the string will accelerate back toward the equilibrium position.
What is the equation of frequency?
f= sqrt(T/4mL)
