Cindy exerts a force of a40 newtons and moves a chair 6 meters. Her brother Andy pushes a different chair for 6 meters while exerting a force of 30 newtons. Andy does work than Cindy. The difference of their amounts of work is Nm.

nacl or sodium chloride is an ionic compound. this is because an ionic compound pertains to a compound that consists of positively and negatively charged ions. in this case, na (sodium) has a tendency to lose one electron when it reacts with with other atoms, so the resulting sodium ion contains 11 protons and 10 electrons, thus making it positively charged (na+), when chlorine reacts, it usually gains one electron to form an ion called chloride, thus making it negatively charged ( since the ions are oppositely charged, they attract.