cseet
May10-04, 08:05 PM
Hi all,
can somebody advise on this,
Equation:
P (change in pressure) = p (density of gas)*w*v*s(max displacement amplitute)
P = pwvs
Needed to know, is the density of gas always at 1.29kg/m(3)?
I've this following qeustion:
A piston at one end of a long tube filled with air at room temperature and normal pressure oscillates with a frquency at 500Hz and an amplitude of 0.1mm. What is the intensity of the waves?
answer:
P=pwvs
= 1.29*2pie(500)*340*1E-4
= 138Pa
if the density of gas does not always = 1.29kg/m(3), then how can I calculate the density of gas from the above question?
thanks
cseet
can somebody advise on this,
Equation:
P (change in pressure) = p (density of gas)*w*v*s(max displacement amplitute)
P = pwvs
Needed to know, is the density of gas always at 1.29kg/m(3)?
I've this following qeustion:
A piston at one end of a long tube filled with air at room temperature and normal pressure oscillates with a frquency at 500Hz and an amplitude of 0.1mm. What is the intensity of the waves?
answer:
P=pwvs
= 1.29*2pie(500)*340*1E-4
= 138Pa
if the density of gas does not always = 1.29kg/m(3), then how can I calculate the density of gas from the above question?
thanks
cseet