A colorful interference pattern is observed when light is reflected from the top and bottom boundaries of a thin oil film. The different bands form as the film's thickness diminishes from a central run-off-poin
Work formula: W = F * d F 1 = 40 N, d 1 = 6 m; F 2 = 30 N; d 2 = 6 m. W ( Cindy ) = 40 * 6 = 240 Nm W ( Andy ) = 30 * 6 = 180 Nm The difference of their amounts if work: 240 Nm - 180 Nm = 60 nm
