What is your phone type? hehe

Donna and her team of five have invented a new gadget for the science exhibition in their college. which intellectual property right will protect their invention?

What are loans to a company or government for a set amount of time

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.