SHS 311 Exam 1 Questions with 100% Correct
Answers
What does the mass and spring represent in explaining a vibration?
Mass represents the inertia (the force that moves something) and the spring represents
elasticity (resisting force)
Equation for sinusoidal vibration
P(t)= Asin{(2pifxt)+theta}
A=amplitude
f=frequency
t=time
theta= starting phase
define cycle
one complete oscillation, a pattern that repeats
define period
how long it takes to complete one cycle
period formula
P=1/freq
define frequency
how many cycles you go through per second
frequency formula
F=1/period
, Period and frequency are __________ to each other
inversely proportional
define peak
distance it's moved in the positive direction
define peak to peak
total distance moved from maximum negative distance to the maximum positive distance
define starting phase
relative starting position of the wave
dampened sinusoid
a wave whos amplitude approaches 0 as time increases
define air density
the number of particles(molecule) per area
what makes air density vary?
moisture, altitude, and pollution
acceleration formula
a=velocity/time
pressure is proportional to:
density and speed
When there's an increase in density OR speed, it results in an increase in...
pressure
Answers
What does the mass and spring represent in explaining a vibration?
Mass represents the inertia (the force that moves something) and the spring represents
elasticity (resisting force)
Equation for sinusoidal vibration
P(t)= Asin{(2pifxt)+theta}
A=amplitude
f=frequency
t=time
theta= starting phase
define cycle
one complete oscillation, a pattern that repeats
define period
how long it takes to complete one cycle
period formula
P=1/freq
define frequency
how many cycles you go through per second
frequency formula
F=1/period
, Period and frequency are __________ to each other
inversely proportional
define peak
distance it's moved in the positive direction
define peak to peak
total distance moved from maximum negative distance to the maximum positive distance
define starting phase
relative starting position of the wave
dampened sinusoid
a wave whos amplitude approaches 0 as time increases
define air density
the number of particles(molecule) per area
what makes air density vary?
moisture, altitude, and pollution
acceleration formula
a=velocity/time
pressure is proportional to:
density and speed
When there's an increase in density OR speed, it results in an increase in...
pressure
