In order to lift a wire ring of radius 1.95cm from thesurface of a container of
ID: 2124811 • Letter: I
Question
In order to lift a wire ring of radius 1.95cm from thesurface of a container of blood plasma, a vertical force of 1.79*10-2 N greater than the weight of the ring isrequired. Calculate the surface tension of blood plasma from this information. - Ive looked at the response and its not giving me the correct answer when i work it out ? In order to lift a wire ring of radius 1.95cm from thesurface of a container of blood plasma, a vertical force of 1.79*10-2 N greater than the weight of the ring isrequired. Calculate the surface tension of blood plasma from this information. - Ive looked at the response and its not giving me the correct answer when i work it out ?Explanation / Answer
surface tension is the force acting per length ( both sides-inside and outside ) T = F / Ltotal T= F / 2 ( circumference ) T= F / 2*2*pi*r T=1.79*10^-2/(4*pi*1.95*10^-2) T=0.073T= F / 2 ( circumference ) T= F / 2*2*pi*r T=1.79*10^-2/(4*pi*1.95*10^-2) T=0.073
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