G A porous solid was brought in contact with a liquid coating. The liquid was wicked in the pores. Using the property data give below, calculate the rate of penetration at the end of 2 min. from the start assuming pores to be straight capillaries of 10 micrometer diameter. Surface tension (σlv) of liquid: 0.80 N/m, contact angle: 22°, and viscosity: 0.0035 Pa. s. Will penetration rate increase or decrease with increasing time

In a unit cell of fcc structure, indicate the position of one of the tetrahedral interstitial sites by plotting the corresponding tetrahedron. do the same for one of the octahedral interstitial sites (in a separate fcc unit cell). mark the positions of all the tetrahedral and octahedral interstitial sites in the unit cells. how many equivalent tetrahedral sites and how many equivalent octahedral sites are contained in a fcc unit cell, respectively. what is the coordination number for a tetrahedral site and what is the coordination number for an octahedral site?