Assume that the pin change interrupt request 0 and Timer 1 overflow are both configured and enabled. The program is currently handling an interrupt for Timer 1 overflow and is within the interrupt service routine for it. The flag for the pin change interrupt is set during this period. What happens next?

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.