What is the momentum of a photon of light that has a frequency of 2.8 x 1014 Hz? (c= 3.00 x 108 m/s, h =6.626 x 10-34 J . s) O 4.4 x 10-28 kg.m/s 2.1 x 10-28 kg.m/s O 1.5 x 10-28 kg.m/s O 6.3 x 10-28 kg.m/s O 6.2 X 10-28 kg.m/s