] Light of wavelength 500.0 nm in air falls at normal incidence on an oil film that is 850.0 nm thick. The oil is floating on a water layer. The refractive index of water is 1.33, and that of the oil is 1.40. You want to add oil so that light reflected from the oil film will be canceled. What is the minimum thickness of oil film you need to add

The of a machine determines its "usefulness." a. input force b. output force c. mechanical advantage

Connie has $660,000 she wants to save. if the fdic insurance limit per depositor, per bank, is $250,000, which of these way is distributing her money between three banks will guarantee that all of her money is insured ?

Assume that two of the electrons at the negative terminal have attached themselves to a nearby neutral atom. there is now a negative ion with a charge -2e at this terminal. what are the electric potential and electric potential energy of the negative ion relative to the electron? the electric potential and the electric potential energy are both twice as much. the electric potential is twice as much and the electric potential energy is the same. the electric potential is the same and the electric potential energy is twice as much. the electric potential and the electric potential energy are both the same. the electric potential is the same and the electric potential energy is increased by the mass ratio of the oxygen ion to the electron. the electric potential is twice as much and the electric potential energy is increased by the mass ratio of the oxygen ion to the electron.