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  Underwater Acoustics Tutorial- 12. Frequently Used Units  
 

 
 
 
     
  12. Frequently Used Units  
 

quantity

unit

symbol

relation

length

meter

m

.

mass

kilogram

kg

.

time

second

s

.

frequency

hertz

Hz

.

force

newton

N

kg x m/s2

pressure

pascal

Pa

N/m2

energy

joule

J

N x m

power

watt

W

J/s

intensity

. .

W/m2

density

. .

kg/m3

speed

. .

m/s

 
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