Even if density were not constant and varied as a function of r, how could acceleration increase as one got closer to the core? The mass of the sphere contained by a radius ##r_1## must be smaller than the mass of a sphere contained by radius ##r_2## where ##r_2 > r_1## regardless of the density...
Here is an interesting phenomenon: If one were to drill a hole that went all the way to the center of the Earth and drop an object through the hole, according to a model called PREM (Preliminary Reference Earth Model), the acceleration of the object would initially increase as it approached the...
Ah I see. So say there were some theoretical liquid that had a single absorption peak at some random wavelength, say 300 nm. If I understand you correctly, only light with 300 nm wavelength would cause this theoretical liquid to heat up? All other light that is not 300 nm wavelength would pass...
Hello all, I had a question out of curiosity. Say you have a green piece of paper. This paper is green because it absorbs the wavelength of lights corresponding to the other colors of the visible spectrum and reflects (transmits) green light, thus appearing green. If one were to shine a laser...