Atoms can be slowed to rest by shooting photons at them. We can think of the photons as simply being absorbed by the atom. Imagine you are an atomic physicist who wants to laser cool rubidium atoms that have atomic mass 1.63e-25 kg. How many photons of frequency 8.00e+14 Hz would be needed (in a beam) to bring a rubidium atom to rest if its initial velocity was 500 m/s (moving toward the incoming photon beam)? (a) 3.62e-11 (b) 0.0769 (c) 13.0 (d) 4.61e+04 (e) 2.76e+10 X 0% If we decrease the frequency of light, how would the number of photons needed change? (a) Increase (b) Decrease (c) Stay the same