Astudent whose normal weight is 500 newtons stands on a scale in a elevator. displacement, velocity, and acceleration are upward. what is the acceleration for each 5 second interval.

Diamond will scratch quartz. true or false

Give one example to show that when substances are mixed, it may result in a chemical or a physical change depending on the conditions.

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