Question $5)$ Use the given information and equations to calculate the effective Hamaker constants for the following interactions: $(\%20)$ a$)\backslash$alpha $-$Al$\_2$O$\_3|$ Water $|\backslash$alpha $-$Al$\_2$O$\_3(\backslash$alpha $-$Al$\_2$O$\_3$ particles are separated by water$)(\%10)$ b$)\backslash$alpha $-$Al$\_2$O$\_3|$ Water $|\backslash$beta $-$SiC$(\backslash$alpha $-$Al$\_2$O$\_3.$ and $\backslash$beta $-$SiC particles separated by water$)(\%10)$