Aparticle with charge 8 µc is located on the x-axis at the point −10 cm , and a second particle with charge 3 µc is placed on the x-axis at −8 cm . −10−8 −6 −4 −2 2 4 6 8 10 8 µ c 3 µ c − 3 µ c x → (cm) what is the magnitude of the total electrostatic force on a third particle with charge −3 µc placed on the x-axis at 2 cm

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