The steam created from the boiler turns a turbine. what type of energy conversion does this represent?
chemical energy to heat energy
heat energy to mechanical energy
steam energy to kinetic energy

Ascientist notices that an oil slick floating on water when viewed from above has many different colors reflecting off the surface, making it look rainbow-like (an effect known as iridescence). she aims a spectrometer at a particular spot and measures the wavelength to be 750 nm (in air). the index of refraction of water is 1.3