25. Calculate the adhesion force of a liquid nanoparticle to a flat surface of a solid material, knowing the Hamaker constant A of the two given phases, the particle radius r and the gap size h between the particle and the surface, indicated in the following table (for your problem number):

Problem N 25
A*1021, J 47
r, nm 11
h, nm 0.170

If you do not open the file - install the RAR archiver. Inside the archive you will find a solution in Word format.