Term
___ “is the fundamental element that keeps us on the move.” 

Definition


Term
What is the unit of force? 

Definition


Term
“If we move an object from one place to another, we have accomplished ___.” 

Definition


Term
What is the equation for work? What is the unit of work? 

Definition
Force (F) X Distance (D) Newton/Meter (or whatever unit distance is in) 


Term
1 Joule is =1 ___/___, which means 1 Joule=___ X ___. So joule is the unit of work. 

Definition


Term
What is the equation for power? What is the unit? 

Definition
Work/Time or Energy/Time watt 


Term
1 watt=1 ___/___. So joule is also the unit of ___. So work and energy are ___. 

Definition
joule/second; energy; interchangeable 


Term

Definition


Term
1 dyne/cm of work or energy=1 ___ 

Definition


Term
A dyne is only a fraction of a ___ 

Definition


Term
“___________ states that every object continues in a state of rest or in uniform motion in a straight line unless a force disturbs the object.” 

Definition


Term
“___ is the property that resists a change in position.” 

Definition


Term
“Newton’s ___ Law describes the relationship among force, mass, and acceleration. We need a force to ___ a mass from its resting position. When the mass moves from its point of equilibrium (resting position) it ____. A ___ causes this acceleration. When a force accelerates a mass, ___ between the mass and the ground reduces the net force” 

Definition
Second; push; accelerates; force; friction 


Term
“The force of friction is always ___ that of the moving body, that is, resisting a motion, and can be expressed as Ff = μN where μ is the static or kinetic coefficient of ___ for a given set of materials, N is the normal ____ or (usually) weight pressing one object into another, F is ___, and f is ___ force.” 

Definition
opposite; friction; force; force; frictional 


Term
“___ is a measurement of the amount of matter in an object and is usually quantified in kg on a balance scale “ 

Definition


Term
“___ is the measurement of the gravitational force that pulls a mass toward earth.” 

Definition


Term
Which one is impacted by height or location: weight or mass? 

Definition


Term
“Newton’s ___ Law is also called the law of action and reaction. When an object A exerts a force on object B, the second object exerts the same force against object A.” 

Definition


Term
“___ energy is also known as the energy of motion” What is an example of this kind of energy? 

Definition
Kinetic Radiant energy and sound energy 


Term
“___ energy is the energy of storage and is not used in motion” What is an example of this kind of energy? 

Definition
Potential “a rock sitting at the edge of a cliff. While stationary, the rock has potential energy. Once the rock falls off the edge of the cliff it has kinetic energy” 


Term
“The ___________ states that energy cannot be created or destroyed beyond what is already in a system but may be transferred from one place to another or changed from one form to another. ” 

Definition
law of conservation of energy 


Term
“___ is defined as the rate of mechanical energy converted to sound energy, that is, energy/time.” 

Definition


Term
Inverse Square Law: “as we double distance from a source, sound energy is reduced by a factor of ___” “sound intensity = ___/___, or the ___ ___ of a sphere where r = distance from the source” 

Definition
four; sound power/4πr2; surface area 


Term
“Sound intensity from a sound source will obey the Inverse Square Law only if the path of the sound is ___, that is, there are no ___.” 

Definition


Term
“The most intense sound that is audible to a normalhearing human before damage occurs is ___ ___ times greater than the softest sound a human can hear.” 

Definition


Term
What are the exponents of these numbers? 1. 1000 2. 10,000 3. 100,000 4. 1,000,000 

Definition
1. 10^3 2. 10^4 3. 10^5 4. 10^6 


Term
What are the answers to these equations? 1. 10^6 x 10^3=___ 2. 10^12/10^2=___ 

Definition


Term
“The reference point for intensity (power/area) “is ___ watts/cm2, which is the lowest intensity a human can hear.” 

Definition


Term
“The maximum intensity that a human can tolerate before there is damage to the hearing mechanism is ___ watt/cm2” 

Definition


Term
Exponent and logarithms are the ___ ___ “exponent and logarithm are the same as ___ (named after Alexander Graham Bell). For example, if a given ratio = 100,000, then log is __ (equal to the number of zeros) and likewise we have __ bels” 

Definition


Term
we convert bel into ___ units; each unit is called a ___. Saying this differently, there are ___ dB in each bel. Therefore, dB = 10 log of the ___ value over the ___ value: measured value/reference value (10^16) 

Definition
10; decibel (dB); 10; measured; reference 


Term
“The lowest value on the Intensity Level (IL) scale is the ratio of the ___ sound a human can hear compared to the ___, which is also the softest sound a human can hear. In other words, 0 dB IL = 10^–16 watts/cm2/10^–16 watts/cm2 which gives us a ratio of ___” 

Definition


Term
Power = ___ or Pressure =___ 

Definition


Term
“As Power is measured at the ___, and sound pressure can be measured ___ by using a microphone and sound measuring device, it is ___ to measure sound pressure rather than sound power. Sound pressure (SP) is measured using a _______” 

Definition
source; anywhere; easier; soundlevel meter (SLM) 


Term
"The softest sound the human can hear, expressed in dynes/cm2, is ___ dynes/cm2. The reference in μPa (microPascal) is ___ μPascal/cm2. Therefore, 0 dB SPL =____ dynes/cm2 or ___ μpascal/cm2.” 

Definition


Term

Definition
20 log of a given pressure/reference pressure 


Term
To double the intensity level at the source we use the formula dB = ______ To double dB SPL you use the equation: _____ 

Definition


Term
What are the units for... 1. Area 2. Velocity 3. Acceleration 4. Force 5. Pressure 6. Work 7. Power 8. Intensity 

Definition
1. cm square and meters squared 2. cm/second and meters/second 3. cm/sec squared and meters/sec squared 4. dynes and newtons 5. dyne/cm squared and N/M squared 6. cm x dyne (erg) or N x M (joules) 7. erg/second or joules/sec 8. intensity=power/area and pressure=force/area 


Term
How many ergs does 1 joule equal? 

Definition


Term

Definition
joule/second; ergs/second 


Term
0.0002 dynes/cm2 =___ μPa/cm2 

Definition


Term
standard acceleration of gravity =___ m/sec2 

Definition


Term
speed of sound =___ meters/sec (in air) at standard atmospheric conditions 

Definition


Term
speed of light in a vacuum = 2.9979 × 108 m/sec which equals ___ 

Definition


Term
force of 1 pascal =___ newton/m2 force of 1 pound (lb) =___ N 

Definition

