You just found a metallic object in a creek bed. you have found its mass to be 96.5 g, and it displaces 5 ml of water. what is the substance?

Which statement is true about the model of the electromagnetic spectrum a: it change the frequencies of light. b: it compare wavelengths of light. c: the color of light waves can be changed using the model. d: the intensities of light waves can be decreased using the model.