1. In a capillary with a radius of 0.4 mm, glycerin with a density of 1.26 g/cm3 rises to a height of 27 mm. The surface tension of glycerin is 0.06397 J/m2. What is the contact angle in this case?
If you do not open the file - install the RAR archiver. Inside the archive you will find a solution in Word format.