What is a joule? 1 foot /lb 1 n-m 1 meter per second squared 1 meter.

What is the measure of a change in an objects velocity?

Ain is , is 's of ? 0.62 0.79 1.27 1.50

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