Solving for p or c when z equals pc

[kaye77]

what do i do to p and c to get z when

z=pc

please help i know its prob dumb but i am so stuck.

 

[dacruick]

what is z, p, and c

 

[kaye77]

acoustic impedance z
density p
speed of sound c

the speed of sound is 330 ms-1
density is 1.3 kg m-3
i need to know what to do with density and spped of sound to get acoustic impendance i know the answer is 0.00043 kg m -2 s-1 x10 but i do not know how to work out the formula?

 

[Dadface]

z=pc means z=p times c.

 

[kaye77]

thankyou