What is the energy of a photon with a frequency of 7.47 × 10¹⁴ s⁻¹? (h = 6.626 × 10⁻³⁴ J • s)

What is the energy (in J) of a photon with a frequency of 7.23 × 10¹⁴ s⁻¹? (h = 6.626 × 10⁻³⁴ J • s)

In Einstein's photoelectric experiment, the kinetic energy of an electron displaced from a metal by a photon was the difference between the energy of a photon and a threshold energy value for the metal. If you were to perform a similar experiment with the metal magnesium, which has a threshold energy of 5.86 × 10⁻¹⁹ J, and ultraviolet light of wavelength 55.5 nm, what would be the kinetic energy (in J) of the electron displaced?

The scattering of sunlight by the mixture of gas molecules in air results in the blue color of the sky. Calculate the energy (in Joules) of a single photon of blue light with a frequency of 7.50 × 1014 Hz. (h = 6.626 x 10-34 J•s) |x 10 49 J 2 3 4 5 C 7 8. +/- х 100