For each of the following passwords, first state the kind of attack that would be necessary to crack it. justify your answer. then say whether or not it is an adequate password, again giving specific reasons.
a) swordfish
b) processing1
c) seattle
d) 3r%t
e) 4h*6tu9$^l

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.