To lift a wire ring of radius 1.95 cm from the surface of a container of blood plasma, a vertical force of 1.79 10-2 N greater than the weight of the ring is required. Calculate the surface tension of blood plasma from this information. N/m A certain fluid has a density of 1045 kg/m3 and is observed to rise to a height of 1.9 cm in a 1.0-mm-diameter tube. The contact angle between the wall and the fluid is zero. Calculate the surface tension of the fluid.N/m A straight horizontal pipe with a diameter of 1.0 cm and a length of 47 m carries oil with a coefficient of viscosity of 0.13 N · s/m2. At the output of the pipe, the flow rate is 8.3 10-5 m3/s and the pressure is 1.0 atmosphere. Find the gauge pressure at the pipe input.
atm