physics

What, according to Max Planck, is the minimum amount of electromagnetic radiation energy in joules that can be emitted or absorbed at a frequency of 6.7×10¹² Hz? Enter your answer in scientific notation using e for ×10. For instance, use 2.0e4 for 2.0×10⁴.

Find the energy in joules of a single photon of microwave radiation with the wavelength of 0.49 cm. Enter your answer in scientific notation using e for ×10. For instance, use 2.0e4 for 2.0×10⁴.