Identify the types of variable given the activity below

Astudent pushes a 60-n block across the floor for a distance of 10 m. how much work was done to move the block

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

What happens when the number of protons in an atom changes