What is the net force acting on the piano?
11,500 N
-11,500 N
500 N
-500 N

How many molecules are present in 3 mols of silicon dioxide (sio2)?

Apersons beliefs and general outlook, which act like filters on the information they receive are called ?

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