1. The problem statement, all variables and given/known data A 0.39 kg mass falls from a height of 2.9 m. If all of the energy of this mass could be converted to visible light of wavelength 5.5 × 10^−7 m, how many photons would be produced? The acceleration of gravity is 9.8 m/s^2 . Planck’s constant is 6.63 × 10^−34 J · s, and the speed of light is 3 × 10^8 m/s. 2. Relevant equations E=hc/λ p=h/λ x=.5at^2 3. The attempt at a solution E=hc/λ=(1.99x10^-25)/(5.5x10^-7)=3.618x10^-10J x=.5at^2 > 2.9=.5(9.8)t^2 > t=.769s I think I need to find power but have looked everywhere online and we do not have textbooks to find it with the given data.