Determine the mass of water (in kg) if 43,120 cal of energy is placed into water, resulting in a temperature change from 105 degrees celsius from 87.1 degrees celsius

Which theory was contradicted by experiments with the photoelectric effect? light spreads out after it passes through a small opening. as soon as light strikes metal, electrons will be ejected. visible light, regardless of color, will cause the ejection of electrons when striking metal. the kinetic energy of ejected electrons depends on the frequency of light that strikes the metal.