Arubber band has a spring constant of 75 n/m. how much force is required to stretch the rubber band 0.02 m past its natural length? a. 2.3 n b. 1.5 n c. 75 n d. 3750 n

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