Calculate the density of gold if 96500kg mass of gold is adjusted in the volume of 5m cube

What are chlorofluorocarbons and what impact do they have on the atmosphere?

In what direction does an applied force move an object

Light traveling in water, nwater = 1.33, strikes a plastic block at an angle of incidence of 51.4°; part of the beam is reflected and part is refracted. if the index of refraction of the plastic is 2.0, what is the angle made by the reflected and refracted beams?