The ionization energy for sodium (na) is 5.14 ev and the electron affinity for chlorine (c1) is 3.62 ev. find the total energy of the molecule nacl, compared with the initially infinitely separated atoms na and cl, if the equilibrium separation is ro = 0.24nm 8.85 x 10-12 f/m and the fundamental charge is 1.602 x [4 marks (the vacuum permitivity is €o 10-19 c.)

Which configuration would produce an electric current? a) rotate a coil of copper wire between two magnets. b) connect a wire between a copper and zinc strip sitting in a beaker of water. c) connect a wire to the (+) positive end of a battery and the other end to a light bulb. d) connect a wire to the negative end of a battery and the other end to a light bulb.

In a heat engine if 1000 j of heat enters the system the piston does 500 j of work, what is the final internal energy of the system if the initial energy was 2000 j? 1. write the equation 2.list out your known variables 3.plug the numbers into the equations 4.solve 5.write your solution statement that includes initial energy and final

Two objects of different mass start from rest, are pulled by the same magnitude net force, and are moved through the same distance. the work done on object 1 is 900 j. after the force has pulled each object, object 1 moves twice as fast as object 2. how much work is done on object 2?