How many passwords can be created in the form [a - z][a - z]9[0, 1]6? that is, a capital letter followed by 9 lowercase letters followed by 6 bits.?

For positive constants a and b, the force between two atoms in a molecule is given f(r) = −a r2 + b r3 , where r > 0 is the distance between the atoms. note: a and b are upper case letters. (a) find f '(r) = (b) find the critical point for f(r). r = (c) find f ''(r) = (d) find the value of r so that f ''(r) = 0.