What are some of the key interfaces in java's gui programming? e. g., what are interfaces like actionlistener, itemlistener, etc. and how are they used?

On the loan worksheet in cell c9 enter pmt function to calculate the monthly payment for the altamonte springs 2018 facilities loan. ensure that the function returns a positive value and set the reference to cells b5 and b6 as absolute references.

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.

Technician a says engine assemblies can be mounted longitudinally in a chassis. technician b says engine assemblies can be mounted transversely in a chassis. who is correct?